May 2026 monthly summary for rabbitmq-server. Delivered performance-focused features that reduce startup times and accelerate test execution, enabling faster deployments and CI cycles for large-scale deployments. Specific highlights include startup performance optimizations with parallel module loading and build-time handling of the jose dependency for OAuth2, and test suite performance improvements via schema reuse and broker-spawn removal. These changes translate into measurable business value: quicker service readiness, lower CI resource usage, and faster feedback loops for developers. Demonstrated technologies include Elixir/Erlang concurrency, build-time dependency management, and test infrastructure optimization.

April 2026 monthly summary focusing on key accomplishments, highlighting feature delivery and observability improvements in rabbitmq-server.

March 2026 monthly summary for rabbitmq-server focused on business value and technical outcomes. Delivered reliability-oriented stream management improvements and clarified operational behavior to reduce operator confusion. Highlights include idempotent stream creation, configurable default cluster sizing for streams, improved error propagation for stream declarations on metadata store timeouts, and clarified reclaim_quorum_memory semantics.

December 2025 (rabbitmq/rabbitmq-server) — Focused on strengthening quorum status reliability in mixed-version clusters. Delivered a targeted fix removing legacy mixed-version compatibility code in quorum status (rabbit_quorum_queue:status/2). This eliminates errors when a quorum queue member is down and aligns with Ra/OTP 27 changes (node behavior without rabbit_quorum_queue:key_metrics_rpc/1). Result: quorum_status CLI now runs stably across mixed-version deployments, reducing customer-facing failures and support load.

Monthly summary for rabbitmq-server (2025-11) highlighting delivered features, fixed bugs, impact, and technologies demonstrated. Focused on business value, reliability, and performance improvements based on implemented changes and dependency upgrades.

Month: 2025-10 — Reliability, performance, and operability improvements across RabbitMQ Server focused on alarms, streams, observability, and deployment ergonomics. Delivered multi-protocol alarm handling, ensured streams are only created when enabled, added Osiris data_dir configurability, improved Prometheus metrics streaming, and refreshed user-facing templates for clarity and accuracy. Key features delivered: - Alarm handling across protocols: Enhanced blocking behavior in AMQP and protocol readers with multi-alarm tracking; includes test infrastructure improvements. Commit references show integration with direct connections and consistent alarm state handling across readers. - Stream manager honors enabled streams: Streams are only created when is_enabled/0 returns true during queue declaration, aligning stream creation with configuration and preventing unwanted streams. Commit: 1c264fa471f8e9905ce5d369a112ccd761eb81fa. - Osiris data directory configuration: Added a Cuttlefish config option to set Osiris data_dir, simplifying deployment and parity with raft.data_dir. Commit: c81fbc5dc028936ef2e833db6369a5975d1560a3. - Prometheus metrics streaming: Stream identity-encoded HTTP replies to reduce memory usage and improve latency for large registries. Commit: 93a014c9dbb0f90c194ade2e76778691ba893245. - RabbitMQ template version update: Updated discussion templates to reflect the latest RabbitMQ 4.2.x series for user-facing version selection. Commit: 23de117608cd24a024f30cb617d52b1e3db96292. Major bugs fixed: - Direct connections now emit blocking state when broker alarms are active, ensuring memory/disk alarms don’t allow overload of a broker in alarm. This aligns with the blocking behavior of the destination shovel and improves protection against overload. - Consistent multi-alarm handling across protocol readers (MQTT, WebMQTT, STOMP) by tracking a set of active alarms rather than a single Conserve flag, preventing premature unblocking when multiple alarms are cleared in isolation. - Test infrastructure for alarm tests reorganized to a dedicated suite using two unclustered nodes, enabling future removal of direct-connection workarounds. Overall impact and accomplishments: - Increased stability and reliability under alarm conditions, reducing risk of broker overload and service outages. - Improved deployment ergonomics and configuration flexibility via Osiris data_dir and is_enabled-based stream creation. - Enhanced observability and performance with streaming Prometheus metrics, enabling faster responses and lower memory footprints for large registries. - Clearer user guidance and faster onboarding through up-to-date discussion templates. Technologies/skills demonstrated: - Erlang/OTP patterns, rabbit_alarm integration, and multi-alarm state management using sets/maps across protocol readers. - Test infrastructure improvements and refactoring to support alarm scenarios. - Observability engineering with streaming I/O in the Prometheus handler. - Config-driven deployment practices and template maintenance for user experience.

February 2025-09 monthly summary focusing on key accomplishments for rabbitmq/rabbitmq-server. This month highlights features delivered, critical bug fixes, overall impact, and core technologies demonstrated, with emphasis on business value and technical achievements.

Monthly summary for 2025-08 focusing on key achievements for the rabbitmq/rabbitmq-website repo.

July 2025 monthly summary for rabbitmq-server focusing on delivering cluster management capability and performance optimizations. Delivered two features: cluster_exchange_limit with validation and testing; Khepri query projection optimization using ETS; both aimed at controlling resource usage, improving cluster reliability and scaling, and reducing IPC overhead. Also included tests to verify behavior across clustered nodes.