February 2026 EMQX monthly summary (emqx/emqx): Focused on reliability, observability, and release-readiness through feature improvements, critical bug fixes, and CI/test enhancements. The work emphasized improving presence tracking, log reliability, and API/documentation usability, while strengthening validation and pre-release processes to enable faster, safer deployments. Key features delivered: - MQTT client attributes initialization improvements: allow client_attrs_init to read connect password and simplify client attrs init rendering. - Swagger i18n enhancements: localize API summaries/descriptions; migrate endpoint summaries; enforce i18n policy and related docs updates. - Documentation and release hygiene: updated changelogs and PR templates; version bumps to support release readiness. Major bugs fixed: - Channel takeover/discard ordering race: record disconnected_at at takeover begin to ensure correct ordering and prevent race with connected_at. - Include pid in text log data to align with JSON logs and improve troubleshooting. - QoS2 DUP handling fix; CRL and CRL-cache improvements (https distribution points; eviction URL state handling). - Expire retained SYS messages after 1 hour to prevent buildup and memory pressure. - Disable TCP congestion alarm by default to reduce noisy alerts. Overall impact and accomplishments: - Significantly improved reliability of presence tracking and observability through robust logging and race-condition fixes. - Enhanced API/documentation quality with i18n localization, preventing misinterpretation across locales. - Strengthened release readiness via pre-compile CI steps, stricter test coverage, and clarified PR/documentation workflows. Technologies/skills demonstrated: - Erlang/OTP and MQTT protocol behavior corrections, logging strategies, and log data parity across formats. - Swagger/OpenAPI i18n integration, static checks, and documentation tooling. - Test engineering, rigorous assertions, and CI/CD automation (pre-compile steps, make-based pipelines).

January 2026 performance highlights: Delivered core feature enhancements, stability improvements, and release/automation upgrades across EMQX core and docs. Key features include base64 encode/decode options for rule-engine with a variform BIF migration and enhanced padding semantics, Oracle bridge test timing improvements, and several config and API refinements (e.g., Json/JWT field access via varifrom, dynamic MQTT keepalive, external schema serde HTTP GET, configurable Erlang distribution). Major bugs fixed improved reliability and security posture (logger crash when packets are not binary or tuple; OIDC issuer URL normalization prevention; Erlang cookie length validation; TLS default behavior hardened to disable TLS 1.2 session resumption by default; CRC32CER version bump to ensure NIF compatibility). Release/CI automation and tooling were strengthened (CI workflow refinements, SBOM tooling, packaging improvements, PR/template updates) to accelerate release cycles. Also advanced quality and maintainability through increased test coverage and documentation updates for 6.0.2, with groundwork for 6.2.0-alpha.1. Overall, these efforts increase system reliability in large-scale deployments, improve security and observability, and shorten the path from development to production. Key achievements (top 5): - Base64 encode/decode options for rule-engine implemented and migrated to a variform BIF, with improved padding semantics and docs. - Oracle bridge test timing improvements introduced wait times to stabilize interactions during tests. - CI/workflow and release automation enhancements, including renaming build_docker job, removing profiles from CI job names, and bolstered SBOM tooling and packaging. - Critical bug fixes: logger crash on non-binary/tuple packets; OIDC issuer URL trailing slash normalization fix; Erlang cookie length validation; TLS defaults hardened by disabling TLS 1.2 session resumption by default. - Test coverage and documentation: increased test coverage, SBOM data improvements, and 6.0.2 release documentation updates and 6.2 prep.

2025-12 monthly summary for EMQX core and docs teams, focusing on delivering business value through robust improvements, security hardening, and more efficient release processes across emqx/emqx and emqx/emqx-docs repos.

November 2025 monthly summary across EMQX core and docs, highlighting cross-repo delivery, reliability improvements, and targeted modernization efforts. The work focused on internationalization of a broad API surface, significant Kafka/connectivity enhancements, and CI/CD/delivery improvements, anchored by careful dependency upgrades and enhanced testing. The results improve global usability, developer productivity, and platform reliability for customers and partners using EMQX APIs, connectors, and dashboards.

October 2025: Delivered API modernization and reliability improvements across EMQX core and docs, with a clear focus on business value: localized, consistent APIs, data integrity, and smoother upgrade paths. Highlights include broad refactor of API descriptions to i18n-ready HOCON, addition of runtime validation for data_backup, targeted bug fixes, and strategic dependency upgrades that improve stability and performance across the stack.

September 2025 monthly summary for emqx/emqx and emqx/emqx-docs. Delivered core features, fixed critical issues, and advanced performance, stability, and upgrade readiness across broker and documentation work. Notable outcomes include Debian 13/Trixie build support in CI, security-focused defaults and ACL improvements, new TPS visibility, and a robust release readiness posture for the 5.8.x line with ongoing 5.9.2-beta.3 changelog work. The effort spanned CI/build pipelines, API enhancements, test stabilization, and platform maintenance, underscoring business value through improved stability, security, and customer upgrade paths.

2025-08 monthly summary focused on stabilization, feature cleanup, and release readiness across EMQX and EMQX-docs. Key outcomes include cleaning up dashboards and aligning chart metadata, robust bug fixes that improve connection reliability and config loading, and intensified release/CI hygiene to support the upcoming 6.x line. Also advanced throughput with a sharded dispatcher pool and strengthened documentation governance for changelogs and Kafka-related updates. The work reduces operational risk, accelerates go-to-market, and demonstrates across-the-board proficiency in backend Erlang/Elixir, CI/CD, and documentation. Highlights by area: - Dashboard/Chart improvements: Refactor to remove the 'bridges' schema from dashboard JSON; fix appVersion in Chart.yaml. - Critical bug fixes: grpc_client SSL options fixed; unzip badarg issue addressed via Erlang upgrade; do not catch exceptions during config init_load; Econnreset handling and log suppression improvements. - Release readiness/CI hygiene: Stopped Debian10 releases; updated macOS runner naming; prepped release 5.8.8-beta.2 and 6.0.0-M2 RC scaffolding; app version synchronization to avoid future conflicts. - Performance and reliability: Sharded message dispatcher pool refactor to boost throughput; test stabilization and reliability improvements (per-test IDs, retries). - Documentation and governance: Changelog formatting improvements; documentation updates for Kafka dependencies and PR-specific notes; EMQX docs updates to consolidate clarifications. Business value: - Reduced release risk and faster delivery cycles, with clearer configuration and versioning across components. - Improved runtime stability for client connections and config init paths, lowering support incidents. - Greater throughput and more reliable test suites, driving confidence in releases. - Clear, concise documentation supporting maintainers and operators; improved changelogs and planning visibility.

July 2025 monthly summary for emqx/emqx focusing on stability, observability, and faster release readiness. Delivered OTP upgrade with TLS stability improvements, strengthened test and health monitoring, and CI/CD infrastructure updates. The changes reduce TLS-related outages, improve observability, and accelerate release cycles.

June 2025 monthly summary for emqx projects. Focused on reliability, localization, release readiness, and code quality. Delivered a set of bug fixes, feature/documentation enhancements, and a major refactor, enabling a smoother 5.10.0 release and stronger localization support across modules.

May 2025 performance summary: Delivered key architectural and reliability improvements across EMQX and docs. Highlights include the EMQX Utils modularization to reduce cross-app dependencies, strengthened test infrastructure and CI checks, security hardening with random JWKs, dependency upgrades, and refreshed documentation and onboarding guidance. These changes enable faster, safer releases, reduce maintenance overhead, and improve developer productivity across EMQX and EMQX Docs.

April 2025 monthly summary for EMQX core and docs repos. This month focused on stabilizing test suites, upgrading dependencies for OTP27, boosting CI/CD reliability, enhancing authentication/authorization capabilities, and refining monitoring dashboards to deliver measurable business value. Key outcomes included stable test execution across the suite, OTP27 compatibility with updated test dependencies, updated Ekka dependency, and comprehensive CI improvements reducing build failures; security and access-control enhancements with preconditions, placeholders, and zone/listener support; and improved visibility and stability of runtime metrics through dashboard improvements. These efforts collectively reduce deployment risk, accelerate release cycles, and improve operator productivity.

March 2025 focused on licensing flexibility, enterprise readiness, reliability, and release discipline across the EMQX family. Key outcomes include license system enhancements with telemetry; enterprise build/test configuration updates; removal of CE edition to simplify maintenance; significant code quality and stability improvements; and health-check, SQL Server reliability enhancements. Documentation and release tooling were improved to support clearer guidance and smoother releases across repos.

February 2025 monthly summary focusing on key accomplishments across the emqx/emqx and emqx-emqx-docs repositories. Major security, reliability, and quality improvements were delivered, with concrete features, fixes, and process enhancements that reduce risk, improve user experience, and support business goals.

January 2025: Core EMQX delivered targeted architectural improvements, performance optimizations, and security/API enhancements across emqx/emqx and emqx/emqx-docs, with strong emphasis on business value, reliability, and upgradeability. Highlights include MT API path namespace refactor to avoid clashes; ETS tables owned by the root supervisor; off-heap mailbox refactor; EMQX broker helper and connection manager (CM) performance optimizations (priority tuning, using erlang:send, avoiding mailbox scans); and security/API upgrades (MFA endpoint and MFA field in user responses) plus improved MFA error handling. Documentation updates, test stability improvements, and license counting correction completed in parallel. Maintenance work includes SBOM plugin removal and build-step cleanup, Docker image improvement (curl added), and upstream dependency bumps (OTP and Kafka client).

December 2024 monthly summary for EMQX development. Focused on delivering multi-tenant scalability features, strengthening CLI UX, expanding test coverage, and hardening reliability and security across core EMQX and MT subsystems. Key outcomes include quota-based authentication hook checks, MT multi-tenant config schema and per-node session limits, CLI usage improvements, and broader test coverage for CLI and MT REST APIs, complemented by targeted reliability fixes and documentation updates. See commit-level notes below for traceability and business value.

Month: 2024-11 focused on delivering features that accelerate enterprise adoption, strengthening security, improving stability, and expanding multi-tenancy capabilities, while also improving observability and documentation. Core work spanned EMQX core, management/UI refinements, and documentation across repos, with targeted fixes to reduce downtime and improve maintainability.

Month 2024-10 — EMQX repository (emqx/emqx) focused on performance improvements, stability, and security across Kafka integration, Dialyzer robustness, and TLS configuration. Delivered code changes, documentation, and security enhancements with a clear business impact: lower latency, improved static analysis reliability, and stronger TLS security.