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apache/eventmesh

Apache EventMesh is an event-driven integration platform that facilitates communication between diverse systems through a unified messaging infrastructure. It supports multiple transport protocols including HTTP, TCP, and gRPC, while providing a plugin-based architecture for connecting to various message brokers like Kafka and RocketMQ. The system enables developers to build, publish, and subscribe to events using standardized CloudEvents, with dedicated SDKs available for Java, Go, C, and Rust.

60.6

Adequate · 29 July 2026

55k

lines of production code

Java

with Go

14

bus factor · 416 authors in all

3

measurements over time

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How it got here

2019–2021 · EventMesh 1.0 foundation and protocol abstraction

This period focused on the project's transition to Apache EventMesh, establishing a robust common module with comprehensive protocol models for HTTP, TCP, and gRPC. It introduced a unified configuration system with hot-reload support, standardized build infrastructure, and a flexible plugin architecture for protocol adaptation.

36 changes

2022–2023 · multi-language SDK and storage API expansion

This period focused on expanding the EventMesh platform with new storage plugin interfaces and implementations for Kafka and RocketMQ, alongside a comprehensive set of new SDKs for Go, Rust, and C. The work also introduced robust gRPC protocol support and configuration management frameworks across Java and other languages, significantly broadening the system's connectivity and extensibility.

19 changes

2024–2026 · A2A protocol and connector architecture

This period focused on introducing the A2A (Agent-to-Agent) protocol support, including a new Java SDK client, gateway REST API, and agent card registry. Simultaneously, the codebase underwent a structural shift in the connector plugins, moving away from the legacy openconnect framework to implement new Source and Sink connector interfaces directly.

9 changes

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About this page

  • The description of this project is derived from its own commit history, not from its README.
  • The score is its highest published measurement, taken on 29 July 2026 at a pinned commit. It is not a live figure and does not change until the project is measured again.
  • Measured at commit 201a058615 — the exact code this score is about.
  • Scored under rubric rubric-2026.08.18. Score the same commit under that rubric and you get the same number.
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