openzipkin/zipkin

This system is a distributed tracing platform that ingests, stores, and queries trace data from various message brokers and storage backends. It provides a server interface for collecting spans via HTTP, gRPC, and protocols like Kafka, RabbitMQ, and Scribe, while supporting storage in Elasticsearch, MySQL, and Cassandra. The architecture includes a modernized UI, health monitoring, and self-tracing capabilities, all built on a refactored core with standardized build and test infrastructure.

This period focused on modernizing the Zipkin codebase by introducing the v2 data model and refactoring storage backends like Elasticsearch, Cassandra, and MySQL to support it. The architecture was significantly updated with a new HTTP server using Armeria, a restructured collector subsystem, and a frontend migration to Vite, while adding comprehensive test coverage for these changes.

37 changes

This period focused on modernizing the Zipkin server by introducing Spring Boot autoconfiguration for all major storage backends and collectors, significantly reducing manual setup requirements. Concurrently, the project expanded its observability and reliability features by adding Prometheus metrics endpoints, health check endpoints, and request throttling to prevent over-capacity issues. The work was heavily supported by comprehensive integration and benchmark tests to ensure the correctness and performance of these new configurations.

26 changes

This period focused on standardizing the build and CI infrastructure through a suite of portable shell scripts for Docker, Maven, and GPG signing. Simultaneously, the project significantly expanded its test environment by introducing dedicated Docker images for various storage backends and message brokers, alongside new JUnit 5 integration testing tools.

17 changes

openzipkin/zipkin was measured the same way every project in this corpus was: the same rubric, at a pinned commit, with the result published in full. Point the surveyor at a repository you know and see whether you agree with it.