Release Notes on Apache Dubbo

Dubbo Java 3.1.4 Official Release

Thu, 01 Dec 2022 00:00:00 +0000

Dubbo 3.1.4 is the latest stable version of Dubbo 3, and we recommend all users upgrade to the latest stable version.

Dubbo 3.1.4

New Features

Dubbo QoS supports a specified whitelist IP list to access all commands

Bugfix

Fix incorrect collection of method names in Dubbo Metrics during generic calls
Fix potential overlap issues in interface mapping when using Zookeeper as a metadata center
Fix support for timeout countdown in Triple protocol
Fix transparency issue with timeout countdown
Fix NPE issues caused by no available addresses during multi-registry requests
Fix null remoteApplicationName issue in Triple under Mesh mode
Fix support for GraalVM Native Image
Fix NPE exception caused by SSL connection when port reuse occurs
Improve output format of JDK compiler error logs
Fix application startup issues when MetadataReportConfig is partially configured
Fix ineffectiveness of dubbo.reference as a default parameter in 3.x versions
Improve logs for Zookeeper connection failures
Fix potential overwriting of ClassLoader configured in ReferenceConfig
Fix issues where certain properties were cached in instance-level addresses leading to method-level configuration failures
Fix onError exception issue in Triple protocol

FAQ

This release includes 3 commits addressing the improvement of exception log FAQ. Refer to the official error code mechanism introduction document for more details. (https://cn.dubbo.apache.org/zh-cn/overview/java-sdk/reference-manual/faq/intro/)

Dubbo Java 3.0.2 Release Announcement

Sun, 18 Jul 2021 00:00:00 +0000

New Features

Support for exposing generalized services via the @DubboService annotation
XML configuration support for the metadata center with protocol and port attributes
Compatibility with versions above curator5
Point-to-point calls support wildcard matching, allowing one provider address to correspond to multiple interfaces
Dynamic configuration added for application-level service discovery to override rules
Provides a switch for dynamic configuration override rules for providers, allowing them to ignore dynamic configuration and not re-expose
Supports native image
Provides a switch to cancel the execution of the shutdown hook
Supports service governance rules for Kubernetes Mesh
Netty connection supports SSL configuration

Bug Fixes

DubboBootStrap start duplication causes dynamic configuration to be overridden
Dynamic configuration rules remain effective after deletion
NullPointerException thrown when exposing triple protocol
ConfigCenterConfig.setAddress method overwrites the username attribute
DefaultFuture.closeChannel destroys consumer-side thread pool
TripleClientHandler.writeRequest throws NullPointerException
NullPointerException thrown when parsing 3.0 migration rules exception
Order issue with Activated Extensions
URLAddress.parse method has issues parsing ipv6 addresses
User-defined parameters in properties configuration are ineffective
Configuration overlap issue when using API model and Spring model simultaneously
Application-level service discovery ineffective at startup
Nacos registry fails to dynamically detect changes in the number of providers
${dubbo.application} cannot be resolved by the Spring placeholder rules in XML files
Issue obtaining the order of instance parameters, first obtaining instance-level parameters, then interface-level parameters
Exception thrown when registering application startup listener if DubboConfigBeanInitializer does not exist
Mock parameters containing ‘:’ or ‘=’ characters are ineffective
NullPointerException when deleting Mesh rules

Optimization

Catch exceptions in RemovalTask to ensure semaphore can be released
Check for duplicate ReferenceConfig/ServiceConfig using unique service names
Optimize random number generation performance
If users use interface-level service discovery, do not publish application-interface mapping data to the metadata center
Use StringBuilder#append(Char) to improve performance
Ensure the order of interfaces in GRPC compiled class files
Optimize reference bean placeholder resolution
Utilize CompletableFuture#get(long, TimeUnit) in MergeableClusterInvoker for performance improvement
Built-in service MetadataService does not delay exposure
Optimize the startup logic of ConfigBean and Bootstrap
Optimize logic for checking duplicate Configs
Use ring data structures for registration notifications
Optimize initialization logic for dynamic configurations
ConfigManager uses ConcurrentHashMap to remove locking logic, improving equals and toString performance
Optimize MetadataInfo equals method and Instance Listener
Optimize asynchronous export/refer logic
Use TreeSet data structure to ensure the order of application names during application-level service discovery
First ten notifications from RegistryNotifier are not delayed
dubbo-compile compiles using a new format to generate stubs
Mesh service governance rules unify grouping and other rule groupings in the dynamic configuration center, changing DEFAULT_GROUP to dubbo
When using nacos as a registration center, parameters can be used in the registration center address to change the grouping in nacos
When calculating ServiceInfo reversion, remove runtime parameters to avoid generating multiple revisions
Nacos registry wraps exceptions as RpcException on throw
Prevent dynamic configuration center from dynamically modifying some permission parameters
Optimize initialization process of Config Bean and ensure compatibility with spring 3.x/4.1.x
Bootstrap.start method is reentrant, exposing or referencing new services
Add classes in the org.apache.dubbo package to the whitelist by default
Ensure the uniqueness of generated Config Id and check for previous existence
Javaassist compatible with changing override declaration fields
Refactor check logic during decoding, throwing exceptions when providers corresponding to path and version are not found
When ApplicationModel is null, compatible with adaptive extensions

Code Quality Improvements

Thanks for the contributions that enhance the stability of Apache Dubbo.

Dubbo Java 3.1.3 Official Release

Mon, 18 Jul 2022 00:00:00 +0000

Dubbo 3.1.3

Changes

Fixed the issue of abnormal Filter order during local calls
Supported importing protocol configuration items into MetadataService
Supported automatically selecting available ports when publishing MetadataService
Improved error code content
Supported consistent hashing load balancing in generic calls
Fixed deserialization exception issue during generic calls
Fixed application-level metadata reuse issue caused by inconsistent JVM Methods order
Defaulted to disabling port reuse capability and fixed the remoting component’s inability to find SPI
Fixed safe guard issues caused by abnormal reference counting
Removed guava dependency used in Nacos registry component
Fixed offline issue due to address aggregation when using Nacos registry at the interface level
Multiple code quality optimization commits

New Contributors

@zhangzq7 made the first contribution in #10847
@akaakking made the first contribution in #10799
@wxbty made the first contribution in #10921
@haoxz11 made the first contribution in #10937

New Contributor

@weixsun made the first contribution in #10941

Future Version Planning

What are the differences between 3.0, 3.1, and 3.2? How will it develop in the future? What is the release cycle? More version iteration plans will be released soon; please follow the official Apache Dubbo WeChat account for the latest information.

Dubbo Java 3.2.0-beta.3 Official Release

Sun, 18 Dec 2022 00:00:00 +0000

Dubbo version 3.2.0-beta.3 is the latest feature version of Dubbo 3, supporting new features such as Spring Boot 3, JDK 17, service-level thread pool isolation, and more. Everyone is welcome to try it out.

Dubbo 3.2.0-beta.3

Note: The codebase of Dubbo 3.2.0-beta.3 is identical to Dubbo 3.1.4, so all modifications included in Dubbo 3.1.4 are also present in Dubbo 3.2.0-beta.3. Duplicate content will not be repeated in the following description.

Dubbo 3.2.0-beta.2 Official Release

Fri, 18 Nov 2022 00:00:00 +0000

Dubbo 3.2.0-beta.2

Changes

Switched to user thread serialization to enhance protocol performance
Supported port reuse for Netty3
Fixed the issue where providedBy does not work with multiple user configurations
Supported istio’s first-party-jwt capability
Removed transitive dependencies of fastjson and gson
Supported optional appResponse non-transmission capability
Switched to Fastjson2 as the default serialization dependency
Improved the logs pushed by the registration center
Fixed the issue where the routing refresh timing is earlier than the service directory refresh timing
Disabled address null protection
Updated SPI code generation to support GraalVM Native
Supported transmitting xds channels in plain text mode
Supported Nacos batch registration and fixed multi-registration overlay issues
Supported Spring Framework 6 and Spring Boot 3
Multiple code quality optimization commits
All changes from the aforementioned Dubbo 3.1.3

New Contributors

@weixsun made their first contribution in #10941

Future Release Planning

What are the differences between 3.0, 3.1, and 3.2? How will it develop in the future? What is the release cycle like? More version iteration plans will be announced soon, and you are welcome to follow the official Apache Dubbo WeChat account for the latest information.

Dubbo Java 2.7.14 Release Announcement

Mon, 18 May 2020 00:00:00 +0000

Changes

Added coverage rules for dynamic configuration center in ServiceDiscovery. (#8389)
Fixed the issue where mock parameters containing ‘:’ or ‘=’ could not be used properly. (#8379)
Fixed the issue where the zone parameter could not take effect for ZoneAwareClusterInvoker configuration. (#8521)
Added a switch for serialization whitelist checks, default is true. (#8537)
Fixed the null pointer exception during serialization checks when the request times out. (#8587)
Fixed the issue where NetUtils.ignoreNetworkInterface could not handle network cards containing ‘(’ symbol. (#8629)
Unified the method for obtaining local addresses. (#8679)
Fixed the issue where a retry count of 0 would still retry once. (#8743)
Immediately close the client when clearing unused invokers. (#8756)
Fixed exceptions in the destroy method and doOverrideIfNecessary. (#8683)
DefaultFuture.closeChannel chooses whether to print detailed request data based on log level. (#8778)
Replaced AttachmentsAdapter with MapUtils. (#8772)

Maven Dependency Changes

netty4: 4.1.51.Final -> 4.1.66.Final
netty4_ssl: 2.0.39.Final -> 2.0.40.Final
http_client: 4.5.3 -> 4.5.13
jetty: 9.4.11.v20180605 -> 9.4.43.v20210629
apollo_client: 1.1.1 -> 1.8.0
tomcat_embed: 8.5.31-> 9.0.48
commons_io: 2.6 -> 2.7
curator: 5.0.0 -> 5.1.0
hessian_lite: 3.2.8 -> 3.2.11

Apache Dubbo Adds a New Member to Its Multilingual System: The First Rust Language Version is Officially Released

Sun, 23 Oct 2022 00:00:00 +0000

Dubbo Rust is positioned as an important implementation of the Dubbo multilingual system, providing a high-performance, easy-to-use, and extensible RPC framework, while offering rich service governance capabilities through integration with the Dubbo Mesh system. This article mainly introduces the basic situation of the Dubbo Rust project, quickly experiences the features of Rust’s first official version through an example, and outlines recent plans for the Dubbo Rust community, suitable for developers and enterprises interested in or adopting Rust.

Dubbo Java 3.0.2.1 Release Announcement

Mon, 23 Aug 2021 00:00:00 +0000

This is a bug fix version of 3.0.2.
It is identical to version 3.0.2 except for the following changes.

Bug Fixes

Fixed the issue where nacos group did not take effect on the consumer side (#8533)
Fixed NPE in request timeout serialization check (#8547)
Compatible with the issue of not importing the fabric-io package when using dubbo-all (#8546)

Dubbo Java 3.0.1 Release Announcement

Fri, 02 Jul 2021 00:00:00 +0000

Optimization

Refactored service introspection mapping relationship, supporting direct configuration of upstream application name during address migration
Added caching for Spring scanning
Optimized configuration overriding logic
Supported controlling Dubbo lifecycle in Servlet environment
Added ServiceListener for listening to ServiceConfig
Optimized method callback parameter settings

Bug Fixes

Enabled strict validation
Corrected logic where one registry center would destroy when started without addresses under multiple registry centers
Removed redundant log outputs
Ignored invalid MetadataReportConfig
Fixed NPE situation during consumer startup
Fixed several compatibility issues with lower versions
Fixed several issues in application-level service discovery logic
Optimized address migration rules, supporting application-level address re-subscription
Fixed NPE situations existing in MetadataInfo
Fixed the issue where instance information registered to the registry center at the application level was incorrectly overwritten

Code Quality Improvement

Thanks to the following contributions that enhanced the stability of Apache Dubbo.

Dubbo Go 1.4.0

Tue, 12 Jan 2021 00:00:00 +0000

Thanks to the active support of the community, we released an exciting version on March 25, 2020—dubbo-go v1.4.0. In addition to continuing to support some existing Dubbo features, dubbo-go has begun some of its own innovative attempts.

The most significant aspect of this version is the groundwork laid for cloud-native support. For instance, after long discussions within the community, we finally introduced a solution that uses K8s as the registration center.

Analysis of Features in Dubbo Java 2.7.5

Mon, 18 May 2020 00:00:00 +0000

Recently, the highly anticipated Dubbo 2.7.5 version was officially released. This version introduces many new features, enhances many existing functionalities, and achieves significant performance improvements. It will be a milestone version for both the Dubbo community and developers alike.

Application-level service registration【beta】
HTTP/2 (gRPC) protocol support
Protobuf support
Performance optimization, with a 30% improvement in call chain performance
Support for TLS secure transport
Optimized consumer-side thread model
New load balancing strategies better suited for multi-cluster deployment scenarios
A brand new application development API (compatible with older versions)【beta】
Additional feature enhancements and bug fixes

First, from the perspective of service discovery, the new version breaks through the previous interface-level model and introduces an application-level service discovery mechanism - service introspection. Although this mechanism is still in beta, it lays a solid foundation for Dubbo’s alignment with the entire microservices cloud-native system. Thanks to compact protocol design and optimization in code implementation, Dubbo has always performed well in terms of performance, with a further improvement in version 2.7.5. According to stress tests from the official maintenance team, performance in the call chain has improved by 30%. In the cloud-native microservices era, multilingual demand is becoming increasingly common. The universality and penetration of protocols are crucial for building a complete microservice system that connects front-end and back-end services. Dubbo supports HTTP/2 protocol by implementing gRPC protocol while also adding compatibility with Protobuf.