June 2025 monthly summary for TBD54566975/ftl: Focused reliability improvement in the build pipeline by introducing a fail-fast mechanism for Quarkus launch failures. Previously, a failed Quarkus launch could cause the build process to hang up to 100 minutes; the fix now surfaces actual build errors immediately, enabling faster diagnosis and reduced build times for CI and developer feedback. This change was implemented as a targeted patch and linked to commit aa66722235ea80c0b8358041ee9b15267e0ccc50 with message 'fix: handle quarkus launch failure (#5677)'.

May 2025 summary: Delivered key architectural and reliability improvements in the ftl repo, enhancing deployment accuracy, schema integrity, and observability. Implemented a schema mirror pathway, ensured runtime metadata is captured at build time, and strengthened end-to-end tracing for HTTP ingress traffic. Fixed several logging and visibility issues to improve operator experience and reduce misconfigurations.

April 2025 (2025-04) monthly summary for TBD54566975/ftl. Key features delivered include Goose context reset feature with session management improvements; MCP tooling enhancements and SQL schema alignment; and updated Go topic export docs. Major bugs fixed improved reset behavior without chat history, proper CLI usage for language plugins, trace URL visibility and jsonl logging, and several reliability fixes (engine idle optimization and Pub/Sub test stabilization). Overall impact: more reliable feature resets, faster initialization, improved observability, and stronger schema-driven development. Technologies demonstrated: Go, CLI tooling, JSONL, schema metadata, MCP tooling, and distributed messaging reliability.

March 2025 monthly summary for TBD54566975/ftl. This period focused on delivering performance, reliability, and business value through MCP-based exposure, runtime stability, and build/error improvements, while expanding testing and maintainability.

February 2025 for TBD54566975/ftl: Delivered stability-focused features and reliability fixes, accelerated provisioning, and enhanced developer tooling, resulting in safer, faster releases and improved developer productivity. Highlights include Goose tooling introduction, expanded autocomplete, configuration stabilization for charts and provisioners, robust changeset/deploy flow fixes, and improved build/logging observability.

January 2025 (2025-01) monthly summary for TBD54566975/ftl: Focused on cross-language topic partitioning, subscription management, and reliability improvements. Implemented partitions in Go and JVM topic declarations, introduced Reset Subscription, and advanced JVM capabilities with a single partition mapper. Strengthened observability through Pub/Sub telemetry and progressed schema graph capabilities. Overall, the month delivered concrete capabilities for data distribution, improved development and operational reliability, and laid groundwork for scalable topic management across languages.

Month 2024-12 summary for TBD54566975/ftl: Delivered a set of timeline-focused capabilities and cross-stack reliability improvements that enhance real-time event processing, observability, and developer productivity. Key outcomes include the timeline service becoming the central hub for event publication and replay, widespread Kafka publishing improvements across Go and JVM, reliability fixes for Pub/Sub and subscriptions, and CI/CD enhancements to stabilize pipelines and reduce flaky tests. Local Kubernetes deployment of timeline service accelerates development and testing, while maintenance work removes legacy paths and simplifies naming.

Month: 2024-11 — TBD54566975/ftl Overview: Delivered architectural improvements to the language plugin system, accelerated processing paths, and stabilized the release pipeline. Focused on simplifying the LanguagePlugin interface, enabling dynamic runner image selection by language plugins, and enhancing Go module handling during schema extraction. Implemented modern process creation via plugin.Spawn and established a local pubsub environment for faster end-to-end testing. These changes reduce maintenance burden, shorten feedback loops, and improve reliability in both development and release workflows. Key features delivered (highlights): - Language plugin interface redesign: removed internal/external distinction and simplified LanguagePlugin interface (commit 5e2b31c226efd3ccb592f9837125d6a3acdc1458). - Language plugins choose the runner image: allow language plugins to select the runner image (commit ab91f250cac5ff9738cd94b9380eeab5c3a3971f). - Optimistic Go module compilation during schema extraction: speed up processing by compiling Go modules during schema extraction (commit 8b8e46873a13cddd15941f1b7dc93c40b95e2397f). - Language plugins use plugin.Spawn for process creation: modernization and improved process management (commit 061ed8c36507a6e7d9f7f6b0767d0fa896e24156). - Provision local pubsub with Redpanda: local pubsub environment for faster end-to-end testing (commit 6b9628a896149b4a60b7d1ead1f5e5e0ccd34988). - Documentation/logging and cleanup: delivery guarantee for pubsub documented; cleanup of unused runner language labels (commits 2e2ea338851268cdf80663ea9c2fab2f5b33aee4 and fdaa8bb9cbc7893801e63c75a15a5e36420a7f98). Major bugs fixed: - Release language plugins fix; build before goreleaser; BuildFailure error level handling; BuildEnv values requirement; Kill language plugins after CLI/tests; FTL new uses project root as dir; Prevent pubsub naming clashes; Remove new subscriptions usage in console (selected fixes from #3292, #3294, #3296, #3306, #3313, #3412, #3522, #3550). Overall impact and accomplishments: - Faster, more reliable release pipeline with deterministic builds and improved error handling. - Reduced schema extraction and processing time via Go module optimizations. - Improved developer experience with a simplified plugin interface and streamlined process management. - Local development and testing benefits from Redpanda-based pubsub provisioning and better logging/observability. Technologies/skills demonstrated: - Go modules, dynamic plugin architecture, and build/CI pipelines. - Process isolation with plugin.Spawn and robust error handling. - Pub/Sub provisioning with Redpanda and Docker Compose-based workflows. - Logging improvements and operational hygiene (log clarity, start-time precision).

2024-10 Monthly Summary: Focused on faster event processing, robust resource management, and a modular Go plugin strategy across two repos (block/ftl and TBD54566975/ftl). Key features delivered include: (1) Event Processing Latency Improvement and Pub/Sub Polling in block/ftl, reducing subscriber delay from 200ms to 100ms and refactoring Pub/Sub to poll for events; integration test added to verify idle performance. Commit: 4681a10c1ad1b384f58f12c2a37387cb2ed4b6d5. (2) ftl-language-go plugin introduced as a dedicated Go module with build configurations, main entry point, and test data; Commit: 54b8be3882238dcc15661e3c194fe41079c59692. Major bugs fixed include: (3) CLI Port Allocation Robustness to exclude the controller's reserved port via bindAllocatorWithoutController; Commit: 2da502527f72c628738084a5d3e311421929d821. (4) CI Reliability improvements to pre-build language plugins and release binaries to avoid timeouts; Commit: 50096424dcc89829f1de5f7ac95382f93860eebd. Overall impact: faster, more reliable event delivery; improved resource management; scalable plugin architecture enabling easier maintenance and future feature delivery. Technologies/skills demonstrated: Go plugin architecture, Pub/Sub polling, performance testing and integration tests, modular design, and CI/CD optimization.