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Posted to commits@jena.apache.org by an...@apache.org on 2016/03/05 14:37:33 UTC
[2/3] jena git commit: Cache information.
Cache information.
Project: http://git-wip-us.apache.org/repos/asf/jena/repo
Commit: http://git-wip-us.apache.org/repos/asf/jena/commit/b9718b16
Tree: http://git-wip-us.apache.org/repos/asf/jena/tree/b9718b16
Diff: http://git-wip-us.apache.org/repos/asf/jena/diff/b9718b16
Branch: refs/heads/master
Commit: b9718b16bd3e78d39f3b228f920aa949f4541c68
Parents: 50d9a24
Author: Andy Seaborne <an...@apache.org>
Authored: Sat Mar 5 13:35:44 2016 +0000
Committer: Andy Seaborne <an...@apache.org>
Committed: Sat Mar 5 13:37:16 2016 +0000
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.../apache/jena/atlas/lib/cache/CacheInfo.java | 62 ++++++++++++++++++++
1 file changed, 62 insertions(+)
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http://git-wip-us.apache.org/repos/asf/jena/blob/b9718b16/jena-base/src/main/java/org/apache/jena/atlas/lib/cache/CacheInfo.java
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diff --git a/jena-base/src/main/java/org/apache/jena/atlas/lib/cache/CacheInfo.java b/jena-base/src/main/java/org/apache/jena/atlas/lib/cache/CacheInfo.java
new file mode 100644
index 0000000..11fafc5
--- /dev/null
+++ b/jena-base/src/main/java/org/apache/jena/atlas/lib/cache/CacheInfo.java
@@ -0,0 +1,62 @@
+/*
+ * 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.jena.atlas.lib.cache;
+
+import org.apache.jena.ext.com.google.common.cache.CacheStats ;
+
+/** Simplified version of Guava's CacheStats (and abstractign away from Guava cache implementation) */
+ public class CacheInfo {
+ public final long requests;
+ public final long hits;
+ public final long misses;
+ public final double hitRate;
+ public final int cacheSize;
+
+ public CacheInfo(int cacheSize, CacheStats stats) {
+ this(cacheSize, stats.requestCount(), stats.hitCount(), stats.missCount(), stats.hitRate() ) ;
+ }
+
+ public CacheInfo(int cacheSize, long requests, long hits, long misses, double hitRate) {
+ this.cacheSize = cacheSize ;
+ this.requests = requests ;
+ this.hits = hits ;
+ this.misses = misses ;
+ this.hitRate = hitRate ;
+ }
+
+ @Override
+ public String toString() {
+ return String.format("size=%,d count=%,d hits=%,d misses=%,d rate=%.1f",
+ cacheSize, requests, hits, misses, hitRate) ;
+ }
+
+// private void details(String label, CacheGuava<?, ?> cache, int cacheSize) {
+// System.out.printf("%s [%,d]\n", label, cacheSize) ;
+// CacheStats stats = ((CacheGuava<?, ?>)cache).stats() ;
+//// System.out.printf(" Cache usage: %,d\n", cache.size()) ;
+// System.out.printf(" Requests: %,d\n", stats.requestCount()) ;
+// System.out.printf(" Hit rate: %.1f%%\n", 100*stats.hitRate()) ;
+//// System.out.printf(" Hits: %,d\n", stats.hitCount()) ;
+//// System.out.printf(" Misses: %,d\n", stats.missCount()) ;
+//// if ( stats.loadSuccessCount() != stats.missCount() ) {
+//// System.out.printf(" Load success: %,d\n", stats.loadSuccessCount()) ;
+//// System.out.printf(" Load ex: %,d\n", stats.loadExceptionCount()) ;
+//// }
+
+ }
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