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Posted to notifications@james.apache.org by bt...@apache.org on 2020/12/07 03:57:33 UTC

[james-project] 03/13: JAMES-3435 CRDT friendly version of CassandraACLDAO

This is an automated email from the ASF dual-hosted git repository.

btellier pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/james-project.git

commit 482319701125f77d2c4377aa6c6386c3f0b998f5
Author: Benoit Tellier <bt...@linagora.com>
AuthorDate: Wed Dec 2 12:19:04 2020 +0700

    JAMES-3435 CRDT friendly version of CassandraACLDAO
    
    Relies on CRDT for concurrency handling.
---
 .../mailbox/cassandra/mail/CassandraACLDAO.java    | 193 +--------------------
 ...CassandraACLDAO.java => CassandraACLDAOV1.java} |  18 +-
 .../mailbox/cassandra/mail/CassandraACLDAOV2.java  | 188 ++++++++++++++++++++
 .../cassandra/modules/CassandraAclModule.java      |  13 ++
 .../cassandra/table/CassandraACLV2Table.java       |  28 +++
 .../cassandra/CassandraMailboxManagerTest.java     |   4 +-
 .../cassandra/mail/CassandraACLMapperContract.java | 142 +++++++++++++++
 ...pperTest.java => CassandraACLMapperV1Test.java} | 112 +-----------
 .../cassandra/mail/CassandraACLMapperV2Test.java   | 128 ++++++++++++++
 .../cassandra/mail/CassandraMailboxMapperTest.java |   2 +-
 .../mail/migration/MailboxPathV2MigrationTest.java |   4 +-
 .../mailbox/cassandra/mail/utils/GuiceUtils.java   |   3 +
 .../modules/mailbox/CassandraMailboxModule.java    |   4 +-
 13 files changed, 534 insertions(+), 305 deletions(-)

diff --git a/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/mail/CassandraACLDAO.java b/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/mail/CassandraACLDAO.java
index 73e5c0f..627baec 100644
--- a/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/mail/CassandraACLDAO.java
+++ b/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/mail/CassandraACLDAO.java
@@ -19,203 +19,24 @@
 
 package org.apache.james.mailbox.cassandra.mail;
 
-import static com.datastax.driver.core.querybuilder.QueryBuilder.bindMarker;
-import static com.datastax.driver.core.querybuilder.QueryBuilder.eq;
-import static com.datastax.driver.core.querybuilder.QueryBuilder.insertInto;
-import static com.datastax.driver.core.querybuilder.QueryBuilder.select;
-import static com.datastax.driver.core.querybuilder.QueryBuilder.set;
-import static com.datastax.driver.core.querybuilder.QueryBuilder.update;
+import java.util.function.Supplier;
 
-import java.io.IOException;
-import java.util.function.Function;
-
-import javax.inject.Inject;
-
-import org.apache.james.backends.cassandra.init.configuration.CassandraConfiguration;
-import org.apache.james.backends.cassandra.init.configuration.CassandraConsistenciesConfiguration;
-import org.apache.james.backends.cassandra.utils.CassandraAsyncExecutor;
 import org.apache.james.mailbox.acl.ACLDiff;
 import org.apache.james.mailbox.cassandra.ids.CassandraId;
-import org.apache.james.mailbox.cassandra.json.MailboxACLJsonConverter;
-import org.apache.james.mailbox.cassandra.table.CassandraACLTable;
-import org.apache.james.mailbox.cassandra.table.CassandraMailboxTable;
-import org.apache.james.mailbox.exception.UnsupportedRightException;
 import org.apache.james.mailbox.model.MailboxACL;
-import org.apache.james.util.FunctionalUtils;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import com.datastax.driver.core.ConsistencyLevel;
-import com.datastax.driver.core.PreparedStatement;
-import com.datastax.driver.core.Row;
-import com.datastax.driver.core.Session;
-import com.datastax.driver.core.querybuilder.QueryBuilder;
-import com.fasterxml.jackson.core.JsonProcessingException;
 
 import reactor.core.publisher.Mono;
 
-public class CassandraACLDAO {
-    public static final int INITIAL_VALUE = 0;
-    private static final Logger LOG = LoggerFactory.getLogger(CassandraACLDAO.class);
-    private static final String OLD_VERSION = "oldVersion";
-
-    private final CassandraAsyncExecutor executor;
-    private final int maxAclRetry;
-    private final PreparedStatement conditionalInsertStatement;
-    private final PreparedStatement conditionalUpdateStatement;
-    private final PreparedStatement readStatement;
-    private final PreparedStatement deleteStatement;
-    private final ConsistencyLevel consistencyLevel;
-
-    @Inject
-    public CassandraACLDAO(Session session,
-                           CassandraConfiguration cassandraConfiguration,
-                           CassandraConsistenciesConfiguration consistenciesConfiguration) {
-        this.executor = new CassandraAsyncExecutor(session);
-        this.maxAclRetry = cassandraConfiguration.getAclMaxRetry();
-        this.consistencyLevel = consistenciesConfiguration.getLightweightTransaction();
-        this.conditionalInsertStatement = prepareConditionalInsert(session);
-        this.conditionalUpdateStatement = prepareConditionalUpdate(session);
-        this.readStatement = prepareReadStatement(session);
-        this.deleteStatement = prepareDelete(session);
-    }
-
-    private PreparedStatement prepareDelete(Session session) {
-        return session.prepare(
-            QueryBuilder.delete().from(CassandraACLTable.TABLE_NAME)
-                .where(eq(CassandraACLTable.ID, bindMarker(CassandraACLTable.ID)))
-                .ifExists());
-    }
-
-    private PreparedStatement prepareConditionalInsert(Session session) {
-        return session.prepare(
-            insertInto(CassandraACLTable.TABLE_NAME)
-                .value(CassandraACLTable.ID, bindMarker(CassandraACLTable.ID))
-                .value(CassandraACLTable.ACL, bindMarker(CassandraACLTable.ACL))
-                .value(CassandraACLTable.VERSION, INITIAL_VALUE)
-                .ifNotExists());
-    }
-
-    private PreparedStatement prepareConditionalUpdate(Session session) {
-        return session.prepare(
-            update(CassandraACLTable.TABLE_NAME)
-                .where(eq(CassandraACLTable.ID, bindMarker(CassandraACLTable.ID)))
-                .with(set(CassandraACLTable.ACL, bindMarker(CassandraACLTable.ACL)))
-                .and(set(CassandraACLTable.VERSION, bindMarker(CassandraACLTable.VERSION)))
-                .onlyIf(eq(CassandraACLTable.VERSION, bindMarker(OLD_VERSION))));
-    }
-
-    private PreparedStatement prepareReadStatement(Session session) {
-        return session.prepare(
-            select(CassandraACLTable.ACL, CassandraACLTable.VERSION)
-                .from(CassandraACLTable.TABLE_NAME)
-                .where(eq(CassandraMailboxTable.ID, bindMarker(CassandraACLTable.ID))));
-    }
-
-    Mono<MailboxACL> getACL(CassandraId cassandraId) {
-        return getStoredACLRow(cassandraId)
-            .map(row -> getAcl(cassandraId, row));
-    }
-
-    private MailboxACL getAcl(CassandraId cassandraId, Row row) {
-        String serializedACL = row.getString(CassandraACLTable.ACL);
-        return deserializeACL(cassandraId, serializedACL);
-    }
-
-    public Mono<ACLDiff> updateACL(CassandraId cassandraId, MailboxACL.ACLCommand command) {
-        return Mono.fromCallable(() -> MailboxACL.EMPTY.apply(command))
-            .flatMap(replacement -> doUpdateAcl(cassandraId, aclWithVersion -> aclWithVersion.apply(command), replacement));
-    }
-
-    public Mono<ACLDiff> setACL(CassandraId cassandraId, MailboxACL mailboxACL) {
-        return doUpdateAcl(cassandraId, acl -> new ACLWithVersion(acl.version, mailboxACL), mailboxACL);
-    }
-
-    Mono<ACLDiff> doUpdateAcl(CassandraId cassandraId, Function<ACLWithVersion, ACLWithVersion> aclTransformation, MailboxACL replacement) {
-        return getAclWithVersion(cassandraId)
-            .flatMap(aclWithVersion ->
-                    updateStoredACL(cassandraId, aclTransformation.apply(aclWithVersion))
-                            .map(newACL -> ACLDiff.computeDiff(aclWithVersion.mailboxACL, newACL)))
-            .switchIfEmpty(insertACL(cassandraId, replacement)
-                    .map(newACL -> ACLDiff.computeDiff(MailboxACL.EMPTY, newACL)))
-            .single()
-            .retry(maxAclRetry);
-    }
-
-    private Mono<Row> getStoredACLRow(CassandraId cassandraId) {
-        return executor.executeSingleRow(
-            readStatement.bind()
-                .setUUID(CassandraACLTable.ID, cassandraId.asUuid())
-                .setConsistencyLevel(consistencyLevel));
-    }
-
-    private Mono<MailboxACL> updateStoredACL(CassandraId cassandraId, ACLWithVersion aclWithVersion) {
-        return executor.executeReturnApplied(
-            conditionalUpdateStatement.bind()
-                .setUUID(CassandraACLTable.ID, cassandraId.asUuid())
-                .setString(CassandraACLTable.ACL, convertAclToJson(aclWithVersion.mailboxACL))
-                .setLong(CassandraACLTable.VERSION, aclWithVersion.version + 1)
-                .setLong(OLD_VERSION, aclWithVersion.version))
-            .filter(FunctionalUtils.identityPredicate())
-            .map(any -> aclWithVersion.mailboxACL);
-    }
+public interface CassandraACLDAO {
+    interface CassandraACLDAOSupplier extends Supplier<CassandraACLDAO> {
 
-    public Mono<Void> delete(CassandraId cassandraId) {
-        return executor.executeVoid(
-            deleteStatement.bind()
-                .setUUID(CassandraACLTable.ID, cassandraId.asUuid()));
     }
 
-    private Mono<MailboxACL> insertACL(CassandraId cassandraId, MailboxACL acl) {
-        return executor.executeReturnApplied(
-            conditionalInsertStatement.bind()
-                    .setUUID(CassandraACLTable.ID, cassandraId.asUuid())
-                    .setString(CassandraACLTable.ACL, convertAclToJson(acl)))
-            .filter(FunctionalUtils.identityPredicate())
-            .map(any -> acl);
-    }
+    Mono<Void> delete(CassandraId cassandraId);
 
-    private String convertAclToJson(MailboxACL acl) {
-        try {
-            return MailboxACLJsonConverter.toJson(acl);
-        } catch (JsonProcessingException exception) {
-            throw new RuntimeException(exception);
-        }
-    }
+    Mono<MailboxACL> getACL(CassandraId cassandraId);
 
-    private Mono<ACLWithVersion> getAclWithVersion(CassandraId cassandraId) {
-        return getStoredACLRow(cassandraId)
-            .map(acl -> new ACLWithVersion(acl.getLong(CassandraACLTable.VERSION),
-                deserializeACL(cassandraId, acl.getString(CassandraACLTable.ACL))));
-    }
+    Mono<ACLDiff> updateACL(CassandraId cassandraId, MailboxACL.ACLCommand command);
 
-    private MailboxACL deserializeACL(CassandraId cassandraId, String serializedACL) {
-        try {
-            return MailboxACLJsonConverter.toACL(serializedACL);
-        } catch (IOException exception) {
-            LOG.error("Unable to read stored ACL. " +
-                "We will use empty ACL instead." +
-                "Mailbox is {} ." +
-                "ACL is {}", cassandraId, serializedACL, exception);
-            return MailboxACL.EMPTY;
-        }
-    }
-
-    private static class ACLWithVersion {
-        private final long version;
-        private final MailboxACL mailboxACL;
-
-        public ACLWithVersion(long version, MailboxACL mailboxACL) {
-            this.version = version;
-            this.mailboxACL = mailboxACL;
-        }
-
-        public ACLWithVersion apply(MailboxACL.ACLCommand command) {
-            try {
-                return new ACLWithVersion(version, mailboxACL.apply(command));
-            } catch (UnsupportedRightException exception) {
-                throw new RuntimeException(exception);
-            }
-        }
-    }
+    Mono<ACLDiff> setACL(CassandraId cassandraId, MailboxACL mailboxACL);
 }
diff --git a/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/mail/CassandraACLDAO.java b/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/mail/CassandraACLDAOV1.java
similarity index 94%
copy from mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/mail/CassandraACLDAO.java
copy to mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/mail/CassandraACLDAOV1.java
index 73e5c0f..3bd9c47 100644
--- a/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/mail/CassandraACLDAO.java
+++ b/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/mail/CassandraACLDAOV1.java
@@ -54,9 +54,9 @@ import com.fasterxml.jackson.core.JsonProcessingException;
 
 import reactor.core.publisher.Mono;
 
-public class CassandraACLDAO {
+public class CassandraACLDAOV1 implements CassandraACLDAO {
     public static final int INITIAL_VALUE = 0;
-    private static final Logger LOG = LoggerFactory.getLogger(CassandraACLDAO.class);
+    private static final Logger LOG = LoggerFactory.getLogger(CassandraACLDAOV1.class);
     private static final String OLD_VERSION = "oldVersion";
 
     private final CassandraAsyncExecutor executor;
@@ -68,9 +68,9 @@ public class CassandraACLDAO {
     private final ConsistencyLevel consistencyLevel;
 
     @Inject
-    public CassandraACLDAO(Session session,
-                           CassandraConfiguration cassandraConfiguration,
-                           CassandraConsistenciesConfiguration consistenciesConfiguration) {
+    public CassandraACLDAOV1(Session session,
+                             CassandraConfiguration cassandraConfiguration,
+                             CassandraConsistenciesConfiguration consistenciesConfiguration) {
         this.executor = new CassandraAsyncExecutor(session);
         this.maxAclRetry = cassandraConfiguration.getAclMaxRetry();
         this.consistencyLevel = consistenciesConfiguration.getLightweightTransaction();
@@ -112,7 +112,7 @@ public class CassandraACLDAO {
                 .where(eq(CassandraMailboxTable.ID, bindMarker(CassandraACLTable.ID))));
     }
 
-    Mono<MailboxACL> getACL(CassandraId cassandraId) {
+    public Mono<MailboxACL> getACL(CassandraId cassandraId) {
         return getStoredACLRow(cassandraId)
             .map(row -> getAcl(cassandraId, row));
     }
@@ -134,10 +134,10 @@ public class CassandraACLDAO {
     Mono<ACLDiff> doUpdateAcl(CassandraId cassandraId, Function<ACLWithVersion, ACLWithVersion> aclTransformation, MailboxACL replacement) {
         return getAclWithVersion(cassandraId)
             .flatMap(aclWithVersion ->
-                    updateStoredACL(cassandraId, aclTransformation.apply(aclWithVersion))
-                            .map(newACL -> ACLDiff.computeDiff(aclWithVersion.mailboxACL, newACL)))
+                updateStoredACL(cassandraId, aclTransformation.apply(aclWithVersion))
+                    .map(newACL -> ACLDiff.computeDiff(aclWithVersion.mailboxACL, newACL)))
             .switchIfEmpty(insertACL(cassandraId, replacement)
-                    .map(newACL -> ACLDiff.computeDiff(MailboxACL.EMPTY, newACL)))
+                .map(newACL -> ACLDiff.computeDiff(MailboxACL.EMPTY, newACL)))
             .single()
             .retry(maxAclRetry);
     }
diff --git a/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/mail/CassandraACLDAOV2.java b/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/mail/CassandraACLDAOV2.java
new file mode 100644
index 0000000..9bc2ad3
--- /dev/null
+++ b/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/mail/CassandraACLDAOV2.java
@@ -0,0 +1,188 @@
+/****************************************************************
+ * Licensed to the Apache Software Foundation (ASF) under one   *
+ * or more contributor license agreements.  See the NOTICE file *
+ * distributed with this work for additional information        *
+ * regarding copyright ownership.  The ASF licenses this file   *
+ * to you under the Apache License, Version 2.0 (the            *
+ * "License"); you may not use this file except in compliance   *
+ * with the License.  You may obtain a copy of the License at   *
+ *                                                              *
+ *   http://www.apache.org/licenses/LICENSE-2.0                 *
+ *                                                              *
+ * Unless required by applicable law or agreed to in writing,   *
+ * software distributed under the License is distributed on an  *
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
+ * KIND, either express or implied.  See the License for the    *
+ * specific language governing permissions and limitations      *
+ * under the License.                                           *
+ ****************************************************************/
+
+package org.apache.james.mailbox.cassandra.mail;
+
+import static com.datastax.driver.core.querybuilder.QueryBuilder.addAll;
+import static com.datastax.driver.core.querybuilder.QueryBuilder.bindMarker;
+import static com.datastax.driver.core.querybuilder.QueryBuilder.eq;
+import static com.datastax.driver.core.querybuilder.QueryBuilder.removeAll;
+import static com.datastax.driver.core.querybuilder.QueryBuilder.select;
+import static com.datastax.driver.core.querybuilder.QueryBuilder.set;
+import static com.datastax.driver.core.querybuilder.QueryBuilder.update;
+
+import javax.inject.Inject;
+
+import org.apache.commons.lang3.NotImplementedException;
+import org.apache.james.backends.cassandra.utils.CassandraAsyncExecutor;
+import org.apache.james.mailbox.acl.ACLDiff;
+import org.apache.james.mailbox.cassandra.ids.CassandraId;
+import org.apache.james.mailbox.cassandra.table.CassandraACLTable;
+import org.apache.james.mailbox.cassandra.table.CassandraACLV2Table;
+import org.apache.james.mailbox.model.MailboxACL;
+
+import com.datastax.driver.core.BatchStatement;
+import com.datastax.driver.core.PreparedStatement;
+import com.datastax.driver.core.Session;
+import com.datastax.driver.core.querybuilder.QueryBuilder;
+import com.github.fge.lambdas.Throwing;
+import com.github.steveash.guavate.Guavate;
+import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.ImmutableSet;
+
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+public class CassandraACLDAOV2 implements CassandraACLDAO {
+    private final CassandraAsyncExecutor executor;
+    private final PreparedStatement insertRights;
+    private final PreparedStatement removeRights;
+    private final PreparedStatement replaceRights;
+    private final PreparedStatement delete;
+    private final PreparedStatement read;
+
+    @Inject
+    public CassandraACLDAOV2(Session session) {
+        this.executor = new CassandraAsyncExecutor(session);
+        this.insertRights = prepareInsertRights(session);
+        this.removeRights = prepareRemoveRights(session);
+        this.replaceRights = prepareReplaceRights(session);
+        this.read = prepareRead(session);
+        this.delete = prepareDelete(session);
+    }
+
+    private PreparedStatement prepareDelete(Session session) {
+        return session.prepare(
+            QueryBuilder.delete().from(CassandraACLV2Table.TABLE_NAME)
+                .where(eq(CassandraACLV2Table.ID, bindMarker(CassandraACLV2Table.ID))));
+    }
+
+    private PreparedStatement prepareInsertRights(Session session) {
+        return session.prepare(
+            update(CassandraACLV2Table.TABLE_NAME)
+                .with(addAll(CassandraACLV2Table.RIGHTS, bindMarker(CassandraACLV2Table.RIGHTS)))
+                .where(eq(CassandraACLV2Table.ID, bindMarker(CassandraACLV2Table.ID)))
+                .and(eq(CassandraACLV2Table.KEY, bindMarker(CassandraACLV2Table.KEY))));
+    }
+
+    private PreparedStatement prepareReplaceRights(Session session) {
+        return session.prepare(
+            update(CassandraACLV2Table.TABLE_NAME)
+                .with(set(CassandraACLV2Table.RIGHTS, bindMarker(CassandraACLV2Table.RIGHTS)))
+                .where(eq(CassandraACLV2Table.ID, bindMarker(CassandraACLV2Table.ID)))
+                .and(eq(CassandraACLV2Table.KEY, bindMarker(CassandraACLV2Table.KEY))));
+    }
+
+    private PreparedStatement prepareRemoveRights(Session session) {
+        return session.prepare(
+            update(CassandraACLV2Table.TABLE_NAME)
+                .with(removeAll(CassandraACLV2Table.RIGHTS, bindMarker(CassandraACLV2Table.RIGHTS)))
+                .where(eq(CassandraACLV2Table.ID, bindMarker(CassandraACLV2Table.ID)))
+                .and(eq(CassandraACLV2Table.KEY, bindMarker(CassandraACLV2Table.KEY))));
+    }
+
+    private PreparedStatement prepareRead(Session session) {
+        return session.prepare(
+            select()
+                .from(CassandraACLV2Table.TABLE_NAME)
+                .where(eq(CassandraACLV2Table.ID, bindMarker(CassandraACLV2Table.ID))));
+    }
+
+    public Mono<Void> delete(CassandraId cassandraId) {
+        return executor.executeVoid(
+            delete.bind()
+                .setUUID(CassandraACLTable.ID, cassandraId.asUuid()));
+    }
+
+    public Mono<MailboxACL> getACL(CassandraId cassandraId) {
+        return executor.executeRows(
+            read.bind()
+                .setUUID(CassandraACLTable.ID, cassandraId.asUuid()))
+            .map(Throwing.function(row -> {
+                MailboxACL.EntryKey entryKey = MailboxACL.EntryKey.deserialize(row.getString(CassandraACLV2Table.KEY));
+                MailboxACL.Rfc4314Rights rights = row.getSet(CassandraACLV2Table.RIGHTS, String.class)
+                    .stream()
+                    .map(Throwing.function(MailboxACL.Rfc4314Rights::deserialize))
+                    .reduce(MailboxACL.NO_RIGHTS, Throwing.binaryOperator(MailboxACL.Rfc4314Rights::union));
+                return new MailboxACL(ImmutableMap.of(entryKey, rights));
+            }))
+            .reduce(Throwing.biFunction(MailboxACL::union));
+    }
+
+    public Mono<ACLDiff> updateACL(CassandraId cassandraId, MailboxACL.ACLCommand command) {
+        return getACL(cassandraId)
+            .switchIfEmpty(Mono.just(new MailboxACL()))
+            .flatMap(before -> doUpdateACL(cassandraId, command)
+                .then(getACL(cassandraId)
+                    .switchIfEmpty(Mono.just(new MailboxACL()))
+                    .map(after -> ACLDiff.computeDiff(before, after))));
+    }
+
+    public Mono<ACLDiff> setACL(CassandraId cassandraId, MailboxACL mailboxACL) {
+        return getACL(cassandraId)
+            .flatMap(oldACL -> delete(cassandraId)
+                .then(Flux.fromIterable(mailboxACL.getEntries().entrySet())
+                    .concatMap(entry -> doSetACL(cassandraId, mailboxACL))
+                    .then())
+                .thenReturn(ACLDiff.computeDiff(oldACL, mailboxACL)));
+    }
+
+    private Mono<Void> doUpdateACL(CassandraId cassandraId, MailboxACL.ACLCommand command) {
+        ImmutableSet<String> rightStrings = asStringSet(command.getRights());
+        switch (command.getEditMode()) {
+            case ADD:
+                return executor.executeVoid(insertRights.bind()
+                    .setUUID(CassandraACLV2Table.ID, cassandraId.asUuid())
+                    .setString(CassandraACLV2Table.KEY, command.getEntryKey().serialize())
+                    .setSet(CassandraACLV2Table.RIGHTS, ImmutableSet.copyOf(rightStrings), String.class));
+            case REMOVE:
+                return executor.executeVoid(removeRights.bind()
+                    .setUUID(CassandraACLV2Table.ID, cassandraId.asUuid())
+                    .setString(CassandraACLV2Table.KEY, command.getEntryKey().serialize())
+                    .setSet(CassandraACLV2Table.RIGHTS, ImmutableSet.copyOf(rightStrings), String.class));
+            case REPLACE:
+                return executor.executeVoid(replaceRights.bind()
+                    .setUUID(CassandraACLV2Table.ID, cassandraId.asUuid())
+                    .setString(CassandraACLV2Table.KEY, command.getEntryKey().serialize())
+                    .setSet(CassandraACLV2Table.RIGHTS, rightStrings, String.class));
+            default:
+                throw new NotImplementedException(command.getEditMode() + "is not supported");
+        }
+    }
+
+    private ImmutableSet<String> asStringSet(MailboxACL.Rfc4314Rights rights) {
+        return rights.list()
+            .stream()
+            .map(MailboxACL.Right::asCharacter)
+            .map(String::valueOf)
+            .collect(Guavate.toImmutableSet());
+    }
+
+    private Mono<Void> doSetACL(CassandraId cassandraId, MailboxACL mailboxACL) {
+        BatchStatement batchStatement = new BatchStatement();
+        mailboxACL.getEntries().entrySet()
+            .stream().map(entry -> replaceRights.bind()
+            .setUUID(CassandraACLV2Table.ID, cassandraId.asUuid())
+            .setString(CassandraACLV2Table.KEY, entry.getKey().serialize())
+            .setSet(CassandraACLV2Table.RIGHTS, asStringSet(entry.getValue()), String.class))
+            .forEach(batchStatement::add);
+
+        return executor.executeVoid(batchStatement);
+    }
+}
diff --git a/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/modules/CassandraAclModule.java b/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/modules/CassandraAclModule.java
index abdecab..8f05801 100644
--- a/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/modules/CassandraAclModule.java
+++ b/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/modules/CassandraAclModule.java
@@ -20,12 +20,14 @@
 package org.apache.james.mailbox.cassandra.modules;
 
 import static com.datastax.driver.core.DataType.bigint;
+import static com.datastax.driver.core.DataType.set;
 import static com.datastax.driver.core.DataType.text;
 import static com.datastax.driver.core.DataType.timeuuid;
 
 import org.apache.james.backends.cassandra.components.CassandraModule;
 import org.apache.james.backends.cassandra.utils.CassandraConstants;
 import org.apache.james.mailbox.cassandra.table.CassandraACLTable;
+import org.apache.james.mailbox.cassandra.table.CassandraACLV2Table;
 import org.apache.james.mailbox.cassandra.table.CassandraUserMailboxRightsTable;
 
 import com.datastax.driver.core.schemabuilder.SchemaBuilder;
@@ -42,6 +44,17 @@ public interface CassandraAclModule {
             .addPartitionKey(CassandraACLTable.ID, timeuuid())
             .addColumn(CassandraACLTable.ACL, text())
             .addColumn(CassandraACLTable.VERSION, bigint()))
+
+        .table(CassandraACLV2Table.TABLE_NAME)
+        .comment("Holds mailbox ACLs. This table do not rely on a JSON representation nor on LWT, contrary to the acl table it replaces.")
+        .options(options -> options
+            .caching(SchemaBuilder.KeyCaching.ALL,
+                SchemaBuilder.rows(CassandraConstants.DEFAULT_CACHED_ROW_PER_PARTITION)))
+        .statement(statement -> statement
+            .addPartitionKey(CassandraACLV2Table.ID, timeuuid())
+            .addClusteringColumn(CassandraACLV2Table.KEY, text())
+            .addColumn(CassandraACLV2Table.RIGHTS, set(text())))
+
         .table(CassandraUserMailboxRightsTable.TABLE_NAME)
         .comment("Denormalisation table. Allow to retrieve non personal mailboxIds a user has right on")
         .options(options -> options
diff --git a/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/table/CassandraACLV2Table.java b/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/table/CassandraACLV2Table.java
new file mode 100644
index 0000000..94d1ea1
--- /dev/null
+++ b/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/table/CassandraACLV2Table.java
@@ -0,0 +1,28 @@
+/****************************************************************
+ * Licensed to the Apache Software Foundation (ASF) under one   *
+ * or more contributor license agreements.  See the NOTICE file *
+ * distributed with this work for additional information        *
+ * regarding copyright ownership.  The ASF licenses this file   *
+ * to you under the Apache License, Version 2.0 (the            *
+ * "License"); you may not use this file except in compliance   *
+ * with the License.  You may obtain a copy of the License at   *
+ *                                                              *
+ *   http://www.apache.org/licenses/LICENSE-2.0                 *
+ *                                                              *
+ * Unless required by applicable law or agreed to in writing,   *
+ * software distributed under the License is distributed on an  *
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
+ * KIND, either express or implied.  See the License for the    *
+ * specific language governing permissions and limitations      *
+ * under the License.                                           *
+ ****************************************************************/
+
+package org.apache.james.mailbox.cassandra.table;
+
+public interface CassandraACLV2Table {
+    String TABLE_NAME = "aclv2";
+
+    String ID = "id";
+    String KEY = "key";
+    String RIGHTS = "rights";
+}
diff --git a/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/CassandraMailboxManagerTest.java b/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/CassandraMailboxManagerTest.java
index 919f9a7..cd710d9 100644
--- a/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/CassandraMailboxManagerTest.java
+++ b/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/CassandraMailboxManagerTest.java
@@ -44,7 +44,7 @@ import org.apache.james.mailbox.MessageManager.AppendResult;
 import org.apache.james.mailbox.SubscriptionManager;
 import org.apache.james.mailbox.cassandra.ids.CassandraId;
 import org.apache.james.mailbox.cassandra.ids.CassandraMessageId;
-import org.apache.james.mailbox.cassandra.mail.CassandraACLDAO;
+import org.apache.james.mailbox.cassandra.mail.CassandraACLDAOV1;
 import org.apache.james.mailbox.cassandra.mail.CassandraACLMapper;
 import org.apache.james.mailbox.cassandra.mail.CassandraApplicableFlagDAO;
 import org.apache.james.mailbox.cassandra.mail.CassandraAttachmentDAOV2;
@@ -790,7 +790,7 @@ public class CassandraMailboxManagerTest extends MailboxManagerTest<CassandraMai
         private CassandraACLMapper aclMapper(CassandraCluster cassandraCluster) {
             return new CassandraACLMapper(
                 rightsDAO(cassandraCluster),
-                new CassandraACLDAO(cassandraCluster.getConf(),
+                new CassandraACLDAOV1(cassandraCluster.getConf(),
                     CassandraConfiguration.DEFAULT_CONFIGURATION,
                     cassandra.getCassandraConsistenciesConfiguration()));
         }
diff --git a/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/CassandraACLMapperContract.java b/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/CassandraACLMapperContract.java
new file mode 100644
index 0000000..975bafc
--- /dev/null
+++ b/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/CassandraACLMapperContract.java
@@ -0,0 +1,142 @@
+/****************************************************************
+ * Licensed to the Apache Software Foundation (ASF) under one   *
+ * or more contributor license agreements.  See the NOTICE file *
+ * distributed with this work for additional information        *
+ * regarding copyright ownership.  The ASF licenses this file   *
+ * to you under the Apache License, Version 2.0 (the            *
+ * "License"); you may not use this file except in compliance   *
+ * with the License.  You may obtain a copy of the License at   *
+ *                                                              *
+ *   http://www.apache.org/licenses/LICENSE-2.0                 *
+ *                                                              *
+ * Unless required by applicable law or agreed to in writing,   *
+ * software distributed under the License is distributed on an  *
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
+ * KIND, either express or implied.  See the License for the    *
+ * specific language governing permissions and limitations      *
+ * under the License.                                           *
+ ****************************************************************/
+package org.apache.james.mailbox.cassandra.mail;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatCode;
+
+import java.util.UUID;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ThreadFactory;
+
+import org.apache.james.backends.cassandra.CassandraClusterExtension;
+import org.apache.james.mailbox.cassandra.ids.CassandraId;
+import org.apache.james.mailbox.cassandra.modules.CassandraAclModule;
+import org.apache.james.mailbox.exception.MailboxException;
+import org.apache.james.mailbox.model.MailboxACL;
+import org.apache.james.util.concurrent.NamedThreadFactory;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+abstract class CassandraACLMapperContract {
+    static final CassandraId MAILBOX_ID = CassandraId.of(UUID.fromString("464765a0-e4e7-11e4-aba4-710c1de3782b"));
+
+    @RegisterExtension
+    static CassandraClusterExtension cassandraCluster = new CassandraClusterExtension(CassandraAclModule.MODULE);
+
+    ExecutorService executor;
+
+    abstract CassandraACLMapper cassandraACLMapper();
+
+    @BeforeEach
+    void setUpExecutor() {
+        ThreadFactory threadFactory = NamedThreadFactory.withClassName(getClass());
+        executor = Executors.newFixedThreadPool(2, threadFactory);
+    }
+
+
+    @AfterEach
+    void tearDownExecutor() {
+        executor.shutdownNow();
+    }
+
+    @Test
+    void retrieveACLWhenNoACLStoredShouldReturnEmptyACL() {
+        assertThat(cassandraACLMapper().getACL(MAILBOX_ID).blockOptional()).isEmpty();
+    }
+
+    @Test
+    void deleteShouldRemoveACL() throws Exception {
+        MailboxACL.EntryKey key = new MailboxACL.EntryKey("bob", MailboxACL.NameType.user, false);
+        MailboxACL.Rfc4314Rights rights = new MailboxACL.Rfc4314Rights(MailboxACL.Right.Read);
+
+        cassandraACLMapper().updateACL(MAILBOX_ID,
+            MailboxACL.command().key(key).rights(rights).asAddition());
+
+        cassandraACLMapper().delete(MAILBOX_ID).block();
+
+        assertThat(cassandraACLMapper().getACL(MAILBOX_ID).blockOptional()).isEmpty();
+    }
+
+    @Test
+    void deleteShouldNotThrowWhenDoesNotExist() {
+        assertThatCode(() -> cassandraACLMapper().delete(MAILBOX_ID).block())
+            .doesNotThrowAnyException();
+    }
+
+    @Test
+    void addACLWhenNoneStoredShouldReturnUpdatedACL() throws Exception {
+        MailboxACL.EntryKey key = new MailboxACL.EntryKey("bob", MailboxACL.NameType.user, false);
+        MailboxACL.Rfc4314Rights rights = new MailboxACL.Rfc4314Rights(MailboxACL.Right.Read);
+
+        cassandraACLMapper().updateACL(MAILBOX_ID,
+            MailboxACL.command().key(key).rights(rights).asAddition()).block();
+
+        assertThat(cassandraACLMapper().getACL(MAILBOX_ID).block())
+            .isEqualTo(new MailboxACL().union(key, rights));
+    }
+
+    @Test
+    void modifyACLWhenStoredShouldReturnUpdatedACL() throws MailboxException {
+        MailboxACL.EntryKey keyBob = new MailboxACL.EntryKey("bob", MailboxACL.NameType.user, false);
+        MailboxACL.Rfc4314Rights rights = new MailboxACL.Rfc4314Rights(MailboxACL.Right.Read);
+
+        cassandraACLMapper().updateACL(MAILBOX_ID, MailboxACL.command().key(keyBob).rights(rights).asAddition()).block();
+        MailboxACL.EntryKey keyAlice = new MailboxACL.EntryKey("alice", MailboxACL.NameType.user, false);
+        cassandraACLMapper().updateACL(MAILBOX_ID, MailboxACL.command().key(keyAlice).rights(rights).asAddition()).block();
+
+        assertThat(cassandraACLMapper().getACL(MAILBOX_ID).block())
+            .isEqualTo(new MailboxACL().union(keyBob, rights).union(keyAlice, rights));
+    }
+
+    @Test
+    void removeWhenStoredShouldReturnUpdatedACL() throws MailboxException {
+        MailboxACL.EntryKey key = new MailboxACL.EntryKey("bob", MailboxACL.NameType.user, false);
+        MailboxACL.Rfc4314Rights rights = new MailboxACL.Rfc4314Rights(MailboxACL.Right.Read);
+
+        cassandraACLMapper().updateACL(MAILBOX_ID, MailboxACL.command().key(key).rights(rights).asAddition()).block();
+        cassandraACLMapper().updateACL(MAILBOX_ID, MailboxACL.command().key(key).rights(rights).asRemoval()).block();
+
+        assertThat(cassandraACLMapper().getACL(MAILBOX_ID).blockOptional().orElse(MailboxACL.EMPTY)).isEqualTo(MailboxACL.EMPTY);
+    }
+
+    @Test
+    void replaceForSingleKeyWithNullRightsWhenSingleKeyStoredShouldReturnEmptyACL() throws MailboxException {
+        MailboxACL.EntryKey key = new MailboxACL.EntryKey("bob", MailboxACL.NameType.user, false);
+        MailboxACL.Rfc4314Rights rights = new MailboxACL.Rfc4314Rights(MailboxACL.Right.Read);
+
+        cassandraACLMapper().updateACL(MAILBOX_ID, MailboxACL.command().key(key).rights(rights).asAddition()).block();
+        cassandraACLMapper().updateACL(MAILBOX_ID, MailboxACL.command().key(key).noRights().asReplacement()).block();
+
+        assertThat(cassandraACLMapper().getACL(MAILBOX_ID).blockOptional().orElse(MailboxACL.EMPTY)).isEqualTo(MailboxACL.EMPTY);
+    }
+
+    @Test
+    void replaceWhenNotStoredShouldUpdateACLEntry() throws MailboxException {
+        MailboxACL.EntryKey key = new MailboxACL.EntryKey("bob", MailboxACL.NameType.user, false);
+        MailboxACL.Rfc4314Rights rights = new MailboxACL.Rfc4314Rights(MailboxACL.Right.Read);
+
+        cassandraACLMapper().updateACL(MAILBOX_ID, MailboxACL.command().key(key).rights(rights).asReplacement()).block();
+
+        assertThat(cassandraACLMapper().getACL(MAILBOX_ID).block()).isEqualTo(new MailboxACL().union(key, rights));
+    }
+}
diff --git a/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/CassandraACLMapperTest.java b/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/CassandraACLMapperV1Test.java
similarity index 59%
rename from mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/CassandraACLMapperTest.java
rename to mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/CassandraACLMapperV1Test.java
index 0dfd6bc..e55e158 100644
--- a/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/CassandraACLMapperTest.java
+++ b/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/CassandraACLMapperV1Test.java
@@ -21,14 +21,10 @@ package org.apache.james.mailbox.cassandra.mail;
 import static com.datastax.driver.core.querybuilder.QueryBuilder.insertInto;
 import static org.apache.james.backends.cassandra.Scenario.Builder.awaitOn;
 import static org.assertj.core.api.Assertions.assertThat;
-import static org.assertj.core.api.Assertions.assertThatCode;
 
-import java.util.UUID;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
 import java.util.concurrent.Future;
-import java.util.concurrent.ThreadFactory;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
 
@@ -36,40 +32,31 @@ import org.apache.james.backends.cassandra.CassandraCluster;
 import org.apache.james.backends.cassandra.CassandraClusterExtension;
 import org.apache.james.backends.cassandra.Scenario.Barrier;
 import org.apache.james.backends.cassandra.init.configuration.CassandraConfiguration;
+import org.apache.james.backends.cassandra.init.configuration.CassandraConsistenciesConfiguration;
 import org.apache.james.backends.cassandra.utils.CassandraUtils;
-import org.apache.james.mailbox.cassandra.ids.CassandraId;
-import org.apache.james.mailbox.cassandra.mail.utils.GuiceUtils;
 import org.apache.james.mailbox.cassandra.modules.CassandraAclModule;
 import org.apache.james.mailbox.cassandra.table.CassandraACLTable;
-import org.apache.james.mailbox.exception.MailboxException;
 import org.apache.james.mailbox.model.MailboxACL;
-import org.apache.james.util.concurrent.NamedThreadFactory;
-import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.RegisterExtension;
 
-class CassandraACLMapperTest {
-
-    private static final CassandraId MAILBOX_ID = CassandraId.of(UUID.fromString("464765a0-e4e7-11e4-aba4-710c1de3782b"));
-
+class CassandraACLMapperV1Test extends CassandraACLMapperContract {
     @RegisterExtension
     static CassandraClusterExtension cassandraCluster = new CassandraClusterExtension(CassandraAclModule.MODULE);
 
     private CassandraACLMapper cassandraACLMapper;
-    private ExecutorService executor;
 
     @BeforeEach
     void setUp(CassandraCluster cassandra) {
-        cassandraACLMapper = GuiceUtils.testInjector(cassandra)
-            .getInstance(CassandraACLMapper.class);
-        ThreadFactory threadFactory = NamedThreadFactory.withClassName(getClass());
-        executor = Executors.newFixedThreadPool(2, threadFactory);
+        cassandraACLMapper =  new CassandraACLMapper(
+            new CassandraUserMailboxRightsDAO(cassandra.getConf(), CassandraUtils.WITH_DEFAULT_CONFIGURATION),
+            new CassandraACLDAOV1(cassandra.getConf(), CassandraConfiguration.DEFAULT_CONFIGURATION, CassandraConsistenciesConfiguration.DEFAULT));
     }
 
-    @AfterEach
-    void tearDown() {
-        executor.shutdownNow();
+    @Override
+    CassandraACLMapper cassandraACLMapper() {
+        return cassandraACLMapper;
     }
 
     @Test
@@ -84,87 +71,6 @@ class CassandraACLMapperTest {
     }
 
     @Test
-    void retrieveACLWhenNoACLStoredShouldReturnEmptyACL() {
-        assertThat(cassandraACLMapper.getACL(MAILBOX_ID).blockOptional()).isEmpty();
-    }
-
-    @Test
-    void deleteShouldRemoveACL() throws Exception {
-        MailboxACL.EntryKey key = new MailboxACL.EntryKey("bob", MailboxACL.NameType.user, false);
-        MailboxACL.Rfc4314Rights rights = new MailboxACL.Rfc4314Rights(MailboxACL.Right.Read);
-
-        cassandraACLMapper.updateACL(MAILBOX_ID,
-            MailboxACL.command().key(key).rights(rights).asAddition());
-
-        cassandraACLMapper.delete(MAILBOX_ID).block();
-
-        assertThat(cassandraACLMapper.getACL(MAILBOX_ID).blockOptional()).isEmpty();
-    }
-
-    @Test
-    void deleteShouldNotThrowWhenDoesNotExist() {
-        assertThatCode(() -> cassandraACLMapper.delete(MAILBOX_ID).block())
-            .doesNotThrowAnyException();
-    }
-
-    @Test
-    void addACLWhenNoneStoredShouldReturnUpdatedACL() throws Exception {
-        MailboxACL.EntryKey key = new MailboxACL.EntryKey("bob", MailboxACL.NameType.user, false);
-        MailboxACL.Rfc4314Rights rights = new MailboxACL.Rfc4314Rights(MailboxACL.Right.Read);
-
-        cassandraACLMapper.updateACL(MAILBOX_ID,
-            MailboxACL.command().key(key).rights(rights).asAddition()).block();
-
-        assertThat(cassandraACLMapper.getACL(MAILBOX_ID).block())
-            .isEqualTo(new MailboxACL().union(key, rights));
-    }
-
-    @Test
-    void modifyACLWhenStoredShouldReturnUpdatedACL() throws MailboxException {
-        MailboxACL.EntryKey keyBob = new MailboxACL.EntryKey("bob", MailboxACL.NameType.user, false);
-        MailboxACL.Rfc4314Rights rights = new MailboxACL.Rfc4314Rights(MailboxACL.Right.Read);
-
-        cassandraACLMapper.updateACL(MAILBOX_ID, MailboxACL.command().key(keyBob).rights(rights).asAddition()).block();
-        MailboxACL.EntryKey keyAlice = new MailboxACL.EntryKey("alice", MailboxACL.NameType.user, false);
-        cassandraACLMapper.updateACL(MAILBOX_ID, MailboxACL.command().key(keyAlice).rights(rights).asAddition()).block();
-
-        assertThat(cassandraACLMapper.getACL(MAILBOX_ID).block())
-            .isEqualTo(new MailboxACL().union(keyBob, rights).union(keyAlice, rights));
-    }
-
-    @Test
-    void removeWhenStoredShouldReturnUpdatedACL() throws MailboxException {
-        MailboxACL.EntryKey key = new MailboxACL.EntryKey("bob", MailboxACL.NameType.user, false);
-        MailboxACL.Rfc4314Rights rights = new MailboxACL.Rfc4314Rights(MailboxACL.Right.Read);
-
-        cassandraACLMapper.updateACL(MAILBOX_ID, MailboxACL.command().key(key).rights(rights).asAddition()).block();
-        cassandraACLMapper.updateACL(MAILBOX_ID, MailboxACL.command().key(key).rights(rights).asRemoval()).block();
-
-        assertThat(cassandraACLMapper.getACL(MAILBOX_ID).block()).isEqualTo(MailboxACL.EMPTY);
-    }
-
-    @Test
-    void replaceForSingleKeyWithNullRightsWhenSingleKeyStoredShouldReturnEmptyACL() throws MailboxException {
-        MailboxACL.EntryKey key = new MailboxACL.EntryKey("bob", MailboxACL.NameType.user, false);
-        MailboxACL.Rfc4314Rights rights = new MailboxACL.Rfc4314Rights(MailboxACL.Right.Read);
-
-        cassandraACLMapper.updateACL(MAILBOX_ID, MailboxACL.command().key(key).rights(rights).asAddition()).block();
-        cassandraACLMapper.updateACL(MAILBOX_ID, MailboxACL.command().key(key).noRights().asReplacement()).block();
-
-        assertThat(cassandraACLMapper.getACL(MAILBOX_ID).block()).isEqualTo(MailboxACL.EMPTY);
-    }
-
-    @Test
-    void replaceWhenNotStoredShouldUpdateACLEntry() throws MailboxException {
-        MailboxACL.EntryKey key = new MailboxACL.EntryKey("bob", MailboxACL.NameType.user, false);
-        MailboxACL.Rfc4314Rights rights = new MailboxACL.Rfc4314Rights(MailboxACL.Right.Read);
-
-        cassandraACLMapper.updateACL(MAILBOX_ID, MailboxACL.command().key(key).rights(rights).asReplacement()).block();
-
-        assertThat(cassandraACLMapper.getACL(MAILBOX_ID).block()).isEqualTo(new MailboxACL().union(key, rights));
-    }
-
-    @Test
     void updateInvalidACLShouldBeBasedOnEmptyACL(CassandraCluster cassandra) throws Exception {
         cassandra.getConf().execute(
             insertInto(CassandraACLTable.TABLE_NAME)
@@ -241,7 +147,7 @@ class CassandraACLMapperTest {
         return executor.submit(() -> {
             CassandraACLMapper aclMapper = new CassandraACLMapper(
                 new CassandraUserMailboxRightsDAO(cassandra.getConf(), CassandraUtils.WITH_DEFAULT_CONFIGURATION),
-                new CassandraACLDAO(cassandra.getConf(),
+                new CassandraACLDAOV1(cassandra.getConf(),
                     CassandraConfiguration.DEFAULT_CONFIGURATION,
                     cassandraCluster.getCassandraConsistenciesConfiguration()));
 
diff --git a/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/CassandraACLMapperV2Test.java b/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/CassandraACLMapperV2Test.java
new file mode 100644
index 0000000..434c367
--- /dev/null
+++ b/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/CassandraACLMapperV2Test.java
@@ -0,0 +1,128 @@
+/****************************************************************
+ * Licensed to the Apache Software Foundation (ASF) under one   *
+ * or more contributor license agreements.  See the NOTICE file *
+ * distributed with this work for additional information        *
+ * regarding copyright ownership.  The ASF licenses this file   *
+ * to you under the Apache License, Version 2.0 (the            *
+ * "License"); you may not use this file except in compliance   *
+ * with the License.  You may obtain a copy of the License at   *
+ *                                                              *
+ *   http://www.apache.org/licenses/LICENSE-2.0                 *
+ *                                                              *
+ * Unless required by applicable law or agreed to in writing,   *
+ * software distributed under the License is distributed on an  *
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
+ * KIND, either express or implied.  See the License for the    *
+ * specific language governing permissions and limitations      *
+ * under the License.                                           *
+ ****************************************************************/
+package org.apache.james.mailbox.cassandra.mail;
+
+import static org.apache.james.backends.cassandra.Scenario.Builder.awaitOn;
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Future;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+
+import org.apache.james.backends.cassandra.CassandraCluster;
+import org.apache.james.backends.cassandra.CassandraClusterExtension;
+import org.apache.james.backends.cassandra.Scenario.Barrier;
+import org.apache.james.backends.cassandra.utils.CassandraUtils;
+import org.apache.james.mailbox.cassandra.modules.CassandraAclModule;
+import org.apache.james.mailbox.model.MailboxACL;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+class CassandraACLMapperV2Test extends CassandraACLMapperContract {
+    @RegisterExtension
+    static CassandraClusterExtension cassandraCluster = new CassandraClusterExtension(CassandraAclModule.MODULE);
+
+    private CassandraACLMapper cassandraACLMapper;
+
+    @BeforeEach
+    void setUp(CassandraCluster cassandra) {
+        cassandra.getConf().printStatements();
+        cassandraACLMapper = new CassandraACLMapper(
+            new CassandraUserMailboxRightsDAO(cassandra.getConf(), CassandraUtils.WITH_DEFAULT_CONFIGURATION),
+            new CassandraACLDAOV2(cassandra.getConf()));
+    }
+
+    @Override
+    CassandraACLMapper cassandraACLMapper() {
+        return cassandraACLMapper;
+    }
+
+    @Test
+    void twoConcurrentUpdatesWhenNoACLStoredShouldReturnACLWithTwoEntries(CassandraCluster cassandra) throws Exception {
+        Barrier barrier = new Barrier(2);
+        cassandra.getConf()
+            .registerScenario(awaitOn(barrier)
+                .thenExecuteNormally()
+                .times(2)
+                .whenQueryStartsWith("SELECT * FROM aclv2 WHERE id=:id;"));
+
+        MailboxACL.EntryKey keyBob = new MailboxACL.EntryKey("bob", MailboxACL.NameType.user, false);
+        MailboxACL.Rfc4314Rights rights = new MailboxACL.Rfc4314Rights(MailboxACL.Right.Read);
+        MailboxACL.EntryKey keyAlice = new MailboxACL.EntryKey("alice", MailboxACL.NameType.user, false);
+        Future<Boolean> future1 = performACLUpdateInExecutor(cassandra, executor, keyBob, rights);
+        Future<Boolean> future2 = performACLUpdateInExecutor(cassandra, executor, keyAlice, rights);
+
+        barrier.awaitCaller();
+        barrier.releaseCaller();
+
+        awaitAll(future1, future2);
+
+        assertThat(cassandraACLMapper.getACL(MAILBOX_ID).block())
+            .isEqualTo(new MailboxACL().union(keyBob, rights).union(keyAlice, rights));
+    }
+
+    @Test
+    void twoConcurrentUpdatesWhenStoredShouldReturnACLWithTwoEntries(CassandraCluster cassandra) throws Exception {
+        MailboxACL.EntryKey keyBenwa = new MailboxACL.EntryKey("benwa", MailboxACL.NameType.user, false);
+        MailboxACL.Rfc4314Rights rights = new MailboxACL.Rfc4314Rights(MailboxACL.Right.Read);
+        cassandraACLMapper.updateACL(MAILBOX_ID, MailboxACL.command().key(keyBenwa).rights(rights).asAddition()).block();
+
+        Barrier barrier = new Barrier(2);
+        cassandra.getConf()
+            .registerScenario(awaitOn(barrier)
+                .thenExecuteNormally()
+                .times(2)
+                .whenQueryStartsWith("SELECT * FROM aclv2 WHERE id=:id;"));
+
+        MailboxACL.EntryKey keyBob = new MailboxACL.EntryKey("bob", MailboxACL.NameType.user, false);
+        MailboxACL.EntryKey keyAlice = new MailboxACL.EntryKey("alice", MailboxACL.NameType.user, false);
+        Future<Boolean> future1 = performACLUpdateInExecutor(cassandra, executor, keyBob, rights);
+        Future<Boolean> future2 = performACLUpdateInExecutor(cassandra, executor, keyAlice, rights);
+
+        barrier.awaitCaller();
+        barrier.releaseCaller();
+
+        awaitAll(future1, future2);
+
+        assertThat(cassandraACLMapper.getACL(MAILBOX_ID).block())
+            .isEqualTo(new MailboxACL().union(keyBob, rights).union(keyAlice, rights).union(keyBenwa, rights));
+    }
+
+    private void awaitAll(Future<?>... futures) 
+            throws InterruptedException, ExecutionException, TimeoutException {
+        for (Future<?> future : futures) {
+            future.get(10L, TimeUnit.SECONDS);
+        }
+    }
+
+    private Future<Boolean> performACLUpdateInExecutor(CassandraCluster cassandra, ExecutorService executor, MailboxACL.EntryKey key, MailboxACL.Rfc4314Rights rights) {
+        return executor.submit(() -> {
+            CassandraACLMapper aclMapper = new CassandraACLMapper(
+                new CassandraUserMailboxRightsDAO(cassandra.getConf(), CassandraUtils.WITH_DEFAULT_CONFIGURATION),
+                new CassandraACLDAOV2(cassandra.getConf()));
+
+            aclMapper.updateACL(MAILBOX_ID, MailboxACL.command().key(key).rights(rights).asAddition()).block();
+            return true;
+        });
+    }
+
+}
diff --git a/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/CassandraMailboxMapperTest.java b/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/CassandraMailboxMapperTest.java
index 5df1a7b..f5c2f6b 100644
--- a/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/CassandraMailboxMapperTest.java
+++ b/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/CassandraMailboxMapperTest.java
@@ -103,7 +103,7 @@ class CassandraMailboxMapperTest {
         CassandraUserMailboxRightsDAO userMailboxRightsDAO = new CassandraUserMailboxRightsDAO(cassandra.getConf(), CassandraUtils.WITH_DEFAULT_CONFIGURATION);
         CassandraACLMapper aclMapper = new CassandraACLMapper(
             new CassandraUserMailboxRightsDAO(cassandra.getConf(), CassandraUtils.WITH_DEFAULT_CONFIGURATION),
-            new CassandraACLDAO(cassandra.getConf(),
+            new CassandraACLDAOV1(cassandra.getConf(),
                 CassandraConfiguration.DEFAULT_CONFIGURATION,
                 cassandraCluster.getCassandraConsistenciesConfiguration()));
         versionDAO = new CassandraSchemaVersionDAO(cassandra.getConf());
diff --git a/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/migration/MailboxPathV2MigrationTest.java b/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/migration/MailboxPathV2MigrationTest.java
index 9979833..7ab3f53 100644
--- a/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/migration/MailboxPathV2MigrationTest.java
+++ b/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/migration/MailboxPathV2MigrationTest.java
@@ -31,7 +31,7 @@ import org.apache.james.backends.cassandra.versions.CassandraSchemaVersionManage
 import org.apache.james.backends.cassandra.versions.CassandraSchemaVersionModule;
 import org.apache.james.core.Username;
 import org.apache.james.mailbox.cassandra.ids.CassandraId;
-import org.apache.james.mailbox.cassandra.mail.CassandraACLDAO;
+import org.apache.james.mailbox.cassandra.mail.CassandraACLDAOV1;
 import org.apache.james.mailbox.cassandra.mail.CassandraACLMapper;
 import org.apache.james.mailbox.cassandra.mail.CassandraIdAndPath;
 import org.apache.james.mailbox.cassandra.mail.CassandraMailboxDAO;
@@ -101,7 +101,7 @@ class MailboxPathV2MigrationTest {
             userMailboxRightsDAO,
             new CassandraACLMapper(
                 userMailboxRightsDAO,
-                new CassandraACLDAO(
+                new CassandraACLDAOV1(
                     cassandra.getConf(),
                     CassandraConfiguration.DEFAULT_CONFIGURATION,
                     cassandraCluster.getCassandraConsistenciesConfiguration())),
diff --git a/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/utils/GuiceUtils.java b/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/utils/GuiceUtils.java
index a6d8883..6dc6dab 100644
--- a/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/utils/GuiceUtils.java
+++ b/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/utils/GuiceUtils.java
@@ -28,6 +28,8 @@ import org.apache.james.blob.api.BlobStore;
 import org.apache.james.blob.api.HashBlobId;
 import org.apache.james.blob.cassandra.CassandraBlobStoreFactory;
 import org.apache.james.mailbox.cassandra.ids.CassandraMessageId;
+import org.apache.james.mailbox.cassandra.mail.CassandraACLDAO;
+import org.apache.james.mailbox.cassandra.mail.CassandraACLDAOV1;
 import org.apache.james.mailbox.model.MessageId;
 
 import com.datastax.driver.core.Session;
@@ -57,6 +59,7 @@ public class GuiceUtils {
                                         CassandraMessageId.Factory messageIdFactory,
                                         CassandraConfiguration configuration) {
         return Modules.combine(
+            binder -> binder.bind(CassandraACLDAO.class).to(CassandraACLDAOV1.class),
             binder -> binder.bind(MessageId.Factory.class).toInstance(messageIdFactory),
             binder -> binder.bind(BlobId.Factory.class).toInstance(new HashBlobId.Factory()),
             binder -> binder.bind(BlobStore.class).toProvider(() -> CassandraBlobStoreFactory.forTesting(session).passthrough()),
diff --git a/server/container/guice/cassandra-guice/src/main/java/org/apache/james/modules/mailbox/CassandraMailboxModule.java b/server/container/guice/cassandra-guice/src/main/java/org/apache/james/modules/mailbox/CassandraMailboxModule.java
index 9427145..0afa4fb 100644
--- a/server/container/guice/cassandra-guice/src/main/java/org/apache/james/modules/mailbox/CassandraMailboxModule.java
+++ b/server/container/guice/cassandra-guice/src/main/java/org/apache/james/modules/mailbox/CassandraMailboxModule.java
@@ -41,7 +41,7 @@ import org.apache.james.mailbox.cassandra.CassandraMailboxSessionMapperFactory;
 import org.apache.james.mailbox.cassandra.DeleteMessageListener;
 import org.apache.james.mailbox.cassandra.ids.CassandraId;
 import org.apache.james.mailbox.cassandra.ids.CassandraMessageId;
-import org.apache.james.mailbox.cassandra.mail.CassandraACLDAO;
+import org.apache.james.mailbox.cassandra.mail.CassandraACLDAOV1;
 import org.apache.james.mailbox.cassandra.mail.CassandraACLMapper;
 import org.apache.james.mailbox.cassandra.mail.CassandraApplicableFlagDAO;
 import org.apache.james.mailbox.cassandra.mail.CassandraAttachmentDAOV2;
@@ -122,7 +122,7 @@ public class CassandraMailboxModule extends AbstractModule {
         bind(CassandraFirstUnseenDAO.class).in(Scopes.SINGLETON);
         bind(CassandraMailboxCounterDAO.class).in(Scopes.SINGLETON);
         bind(CassandraMailboxDAO.class).in(Scopes.SINGLETON);
-        bind(CassandraACLDAO.class).in(Scopes.SINGLETON);
+        bind(CassandraACLDAOV1.class).in(Scopes.SINGLETON);
         bind(CassandraMailboxPathDAOImpl.class).in(Scopes.SINGLETON);
         bind(CassandraMailboxPathV2DAO.class).in(Scopes.SINGLETON);
         bind(CassandraMailboxPathV3DAO.class).in(Scopes.SINGLETON);


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