We are very excited to announce the first beta release of the 3.3.x branch, a release that has some very exciting features to reveal.

It is highly recommended to stay on 3.2.x for production usage and only upgrade to 3.3.x after the first stable release is available (with no beta suffix).

New Features

• New Triple protocol, fully compatible with gRPC while supporting direct access from cURL and browser.
• Rest-style programming (Spring MVC and JAX-RS) and communication (application/json) support, much easier for Dubbo application to serve as a standard web server.
• A bunch of starters for easy dependency management when developing with Spring Boot (Zookeeper, Nacos, Sentinel, etc.).
• GraalVM Native Image support with Dubbo AOT.
• Fully JDK 21 support and project loom thread model.
• Metrics and tracing improvement.

What's Changed

GraalVM Native Image (Dubbo AOT)

• Native Support Springboot3 by @CrazyHZM in https://github.com/apache/dubbo/pull/12072
• Support for automatic identification of serialization classes and generation of native image configuration by @CrazyHZM in https://github.com/apache/dubbo/pull/12433
• Fixed the issue of superclass and filed not being loaded automatically in the native serialization config scenario by @CrazyHZM in https://github.com/apache/dubbo/pull/12435
• In native scenarios, Compiler and Proxy are set to jdk by default by @CrazyHZM in https://github.com/apache/dubbo/pull/12530
• Remove NativeUtils by @CrazyHZM in https://github.com/apache/dubbo/pull/12454
• add tri native image support by @FoghostCn in https://github.com/apache/dubbo/pull/12536
• Fix native image compilation failure due to missing parameterless constructs of ServiceBean by @CrazyHZM in https://github.com/apache/dubbo/pull/12733
• fix_win11_aot_compile_NoSuchFileException,because of File.separator by @PromiseChan in https://github.com/apache/dubbo/pull/12769
• Ignore class loading failure when native is compiled by @CrazyHZM in https://github.com/apache/dubbo/pull/13009
• update qos module native-image reflect config by @FoghostCn in https://github.com/apache/dubbo/pull/13056

Protocol (rest & triple)

• support passing detect context to help build netty handlers by @icodening in https://github.com/apache/dubbo/pull/12460
• http protocol detector by @suncairong163 in https://github.com/apache/dubbo/pull/12452
• Feature/dubbo rest no annotation support by @suncairong163 in https://github.com/apache/dubbo/pull/12700
• add feign client annotation support by @suncairong163 in https://github.com/apache/dubbo/pull/12736
• add rest provider body multipart json that JsonUtils supports ut by @suncairong163 in https://github.com/apache/dubbo/pull/12716
• Feature/dubbo3.3 add reserence providedby by springcloud feignclient by @suncairong163 in https://github.com/apache/dubbo/pull/12823
• feign client service name cover dubbo provided by by @suncairong163 in https://github.com/apache/dubbo/pull/12838
• unification HTTP server side by @icodening in https://github.com/apache/dubbo/pull/12815
• fix h1 and grpc status code by @icodening in https://github.com/apache/dubbo/pull/12994
• fix h2 curl error by @icodening in https://github.com/apache/dubbo/pull/12996
• fix pb class not found by @icodening in https://github.com/apache/dubbo/pull/12997
• Feature improvement, only register one url for port unification. by @chickenlj in https://github.com/apache/dubbo/pull/12528
• [feat.] new triple protocol implement by @icodening in https://github.com/apache/dubbo/pull/12873
• Fix rest protocol NPE when using apache-http-client (#12916) by @aofall in https://github.com/apache/dubbo/pull/12984
• fix pojo dependency protobuf class by @icodening in https://github.com/apache/dubbo/pull/13012
• Fix triple generic invoke by @AlbumenJ in https://github.com/apache/dubbo/pull/13021

Metrics & Tracing

• ✨ add framework metrics by @songxiaosheng in https://github.com/apache/dubbo/pull/12576
• Service metrics by @songxiaosheng in https://github.com/apache/dubbo/pull/13033
• Fix qps time window unit by @AlbumenJ in https://github.com/apache/dubbo/pull/13077
• add spring boot interceptor to copy header(dubbo-tag)/cookie(dubbo.tag) by @carlvine500 in https://github.com/apache/dubbo/pull/12514
• fix: fix missing metrics filter & recover #12453 by @conghuhu in https://github.com/apache/dubbo/pull/12577
• Add support for error code metrics (#12125) by @namelessssssssssss in https://github.com/apache/dubbo/pull/12661
• Support disable metrics init and sync by @AlbumenJ in https://github.com/apache/dubbo/pull/13025
• add netty4 metrics. by @hujun-w-2 in https://github.com/apache/dubbo/pull/12695
• feat: add brave to core by @conghuhu in https://github.com/apache/dubbo/pull/12814
• Metrics event split by @namelessssssssssss in https://github.com/apache/dubbo/pull/12888

JDK 21

• Support project loom as thread pool factory by @AlbumenJ in https://github.com/apache/dubbo/pull/13111

Spring Boot Starters

• chore: add seata sentinel starter & rename tracing starter by @conghuhu in https://github.com/apache/dubbo/pull/12543

Bugfixes and Enhancements

• fix: fix inappropriate invoke in unsubscribe retry task by @XIACYBING in https://github.com/apache/dubbo/pull/12231
• Fix incorrect timeout message by @tianshuang in https://github.com/apache/dubbo/pull/13001
• fix: AbortPolicyWithReport concurrency #13042 by @giraffe-tree in https://github.com/apache/dubbo/pull/13043
• Fix npe when channel inactive by @finefuture in https://github.com/apache/dubbo/pull/13062
• fix loading process cannot load environment variables. by @chickenlj in https://github.com/apache/dubbo/pull/13091
• Disable subscribe nacos legacy name in 3.3 by @AlbumenJ in https://github.com/apache/dubbo/pull/12617
• refactor dubbo module by @qinliujie in https://github.com/apache/dubbo/pull/12276
• Gson generic call returns a JSON string by default by @finefuture in https://github.com/apache/dubbo/pull/12633
• log messages support use placeholders and parameters by @MartinDai in https://github.com/apache/dubbo/pull/12365
• tag support multi level by @carlvine500 in https://github.com/apache/dubbo/pull/12673

Dependencies

• Bump net.bytebuddy:byte-buddy from 1.14.7 to 1.14.8 by @dependabot in https://github.com/apache/dubbo/pull/13075
• Bump bytebuddy.version from 1.14.7 to 1.14.8 by @dependabot in https://github.com/apache/dubbo/pull/13074
• Bump io.projectreactor:reactor-core from 3.5.9 to 3.5.10 by @dependabot in https://github.com/apache/dubbo/pull/13073
• Bump io.micrometer:micrometer-core from 1.11.3 to 1.11.4 by @dependabot in https://github.com/apache/dubbo/pull/13072
• Bump io.opentelemetry:opentelemetry-bom from 1.30.0 to 1.30.1 by @dependabot in https://github.com/apache/dubbo/pull/13071
• Bump org.graalvm.buildtools:native-maven-plugin from 0.9.26 to 0.9.27 by @dependabot in https://github.com/apache/dubbo/pull/13070
• Bump io.micrometer:micrometer-bom from 1.11.3 to 1.11.4 by @dependabot in https://github.com/apache/dubbo/pull/13069
• Bump org.graalvm.buildtools:native-maven-plugin from 0.9.25 to 0.9.26 by @dependabot in https://github.com/apache/dubbo/pull/13040
• Bump io.opentelemetry:opentelemetry-bom from 1.29.0 to 1.30.0 by @dependabot in https://github.com/apache/dubbo/pull/13039
• Bump protobuf-java_version from 3.24.2 to 3.24.3 by @dependabot in https://github.com/apache/dubbo/pull/13038
• Bump grpc.version from 1.57.2 to 1.58.0 by @dependabot in https://github.com/apache/dubbo/pull/13037

New Contributors

• @FoghostCn made their first contribution in https://github.com/apache/dubbo/pull/12536
• @carlvine500 made their first contribution in https://github.com/apache/dubbo/pull/12514
• @Tomoko-hjf made their first contribution in https://github.com/apache/dubbo/pull/12776
• @chaicho made their first contribution in https://github.com/apache/dubbo/pull/12864
• @Nortyr made their first contribution in https://github.com/apache/dubbo/pull/12981
• @aofall made their first contribution in https://github.com/apache/dubbo/pull/12984
• @giraffe-tree made their first contribution in https://github.com/apache/dubbo/pull/13043
• @shj1995 made their first contribution in https://github.com/apache/dubbo/pull/13054
• @NingleXu made their first contribution in https://github.com/apache/dubbo/pull/13061

Full Changelog: https://github.com/apache/dubbo/compare/dubbo-3.2.6...dubbo-3.3.0-beta.1