[camel-website] 01/01: Blog post on whats new in Camel 3.10.

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commit c997bbae52fdb912f31776ed508ab5449a899687
Author: Claus Ibsen <cl...@gmail.com>
AuthorDate: Tue May 18 16:11:09 2021 +0200

    Blog post on whats new in Camel 3.10.
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+---
+title: "Apache Camel 3.10 What's New"
+date: 2021-05-21
+authors: [davsclaus]
+categories: ["Releases"]
+preview: Details of what we have done in the Camel 3.10 release.
+---
+
+Apache Camel 3.10 has just been released.
+
+This is a non-LTS release which means we will not provide patch releases.
+The next planned LTS release is 3.11 scheduled for June/July 2021.
+
+## So what's in this release
+
+This release introduces a set of new features and noticeable improvements that we will cover in this blog post.
+
+### Reduced object allocations
+
+We have optimized the remainder of the most complex EIPs to avoid excessive object allocations,
+and also to support _exchange pooling_.
+
+The only EIP which is less optimized is the Aggregate EIP which also is the most complex EIP implementation in Camel.
+
+We also optimized the remainder of the Camel components to support _exchange pooling_.
+
+### Optimized core
+
+We continue the optimization and have improved the core in various small areas such as
+avoiding the copy message id's if they are not in use, and also a faster way to lookup endpoints in the Camel endpoint registry,
+which helps when using dynamic EIP patterns.
+
+### Multi language DSLs
+
+We did not introduce a new DSL language, but we have improved the YAML DSL to be a first class DSL.
+
+YAML DSL fully support Kamelets and so far all the ready to use Kamelets from the
+[Apache Camel Kamelet Catalog](https://github.com/apache/camel-kamelets) are in YAML.
+
+You can now also tell Camel to dump all the routes during startup as XML. This allows to diagnose
+your routes, which comes handy if you write routes in different DSL's and you have some kind
+of problem. Then the XML dump is a _view_ of the routes from Camel point of view.
+
+### Kamelets
+
+We have done significant work to _kamelets_ in this release.
+
+Kamelets (route templates) are now more flexible and more isolated, which really helps
+to build more sophisticated Kamelets that are plug and play ready in any Camel runtime.
+
+A Kamelet can now specify _local beans_ that are only present when the kamelet is creating
+the runtime route that it represents. The Kamelet can even embed Java, Groovy, Kotlin (or other language)
+as source code for creating the _local beans_. This gives more power to Kamelets, such as the AWS kamelets
+that is self contained and can create _local beans_ for the AWS Client that is needed for connectivity with AWS cloud platform.
+
+For example we added `Kamelet` as an EIP which allows you to call kamelets in a more sophisticated
+way for, such as in a way similar to using asynchronous request/reply message patterns.
+
+Kamelets can now be discovered lazy at runtime, such as from classpath. This allows you for example
+to add 3rd party Kamelets easily by adding the JAR to your project. Or the JAR from
+the official [Apache Camel Kamelet Catalog](https://github.com/apache/camel-kamelets).
+
+### Kafka
+
+In the Kafka world then it's common to use Avro or Protobuf serialization.
+In this release we added support for Jackson based dataformats for Avro and Protobuf.
+
+The `camel-kafka` component has been made more roboust during stopping to better
+handle errors thrown by Kafka during client shutdown.
+
+The components are upgraded to Kafka 2.8.
+
+### Camel K
+
+We have continued porting over more from the Camel K runtime to this core Camel project.
+The support for webhooks and kamelet reify component has been ported over.
+
+### Rest DSL
+
+The Rest DSL have been improved to support the OpenAPI 3.1 specification
+in regards to declaring security model and requirements.
+
+### Cloud component
+
+The Camel AWS and Azure components have had various bug fixes and smaller improvements.
+
+### Easier fat-jar packaging
+
+We added a new `prepare-fatjar` goal to the
+[camel-maven-plugin](https://github.com/apache/camel/blob/main/tooling/maven/camel-maven-plugin/src/main/docs/camel-maven-plugin.adoc)
+which allows to prepare your Camel application for fat-jar packaging where the plugin scans your project
+and generate one unique _uber metadata_ file. This allows _fat-jar_ packaging such
+as various maven plugins to safely package together the Camel JARs and your application
+in a single JAR which otherwise would cause Camel metadata files to be overridden.
+
+### Debezium
+
+Camel now supports Debezium 1.5.
+
+### Quarkus
+
+This release is preparing for supporting the upcoming Quarkus 2.0 release.
+Camel is now upgraded to support VertX and the MicroProfile v4 specification.
+
+### Spring Boot
+
+We have upgraded to latest Spring Boot 2.4.5 release.
+
+### New components
+
+This release has a number of new components, data formats and languages:
+
+- `camel-azure-cosmosdb` - Integrates with CosmoDB databases on MS Azure
+- `camel-spring-jdbc` - The `camel-jdbc` component was made spring-less and this component adds support for using Spring Transactions with the JDBC component.
+- `camel-jackson-avro` - Marshal POJOs to Avro and back using Jackson
+- `camel-jackson-protobuf` - Marshal POJOs to Protobuf and back using Jackson
+
+## Upgrading
+
+Make sure to read the [upgrade guide](/manual/latest/camel-3x-upgrade-guide-3_10.html) if you are upgrading from a previous Camel version.
+
+## Release Notes
+
+You can find more information about this release in the [release notes](/releases/release-3.10.0/), with a list of JIRA tickets resolved in the release.