March 2026 monthly summary focusing on CHASM work in temporalio/temporal. Focused on delivering external-friendly CHASM visibility capabilities, improving encoding pathways, and enabling scalable integration without circular dependencies. All changes prioritized testing and build stability.

January 2026 monthly summary for temporalio/temporal: Delivered performance-oriented Elasticsearch/OpenSearch improvements, boosted maintainability, and enhanced observability. Key work included a refactor of Elasticsearch query construction to remove duplicate buildQueryParams and consolidate BoolQueries, a fix for OpenSearch pagination sorting by explicitly setting the missing key, and new metrics to track invalid search attribute comparisons. These changes improved query latency, reliability with OpenSearch visibility store, and debugging visibility, supporting faster issue resolution and better data accuracy.

December 2025: Delivered CHASM Visibility Subsystem enhancements for temporal CHASM, introducing a new Visibility Manager to list and count executions, an API extension for CHASM-specific visibility store integration, and memo provider efficiency improvements by returning proto.Message directly. Updated visibility factory to include CHASM registry in interface parameters, enabling CHASM-specific functionality and future extension. Implemented a targeted CHASM Scheduler memo provider fix to improve correctness and reliability. Built the changes and prepared for local verification; no new unit tests added in this cycle. Overall, strengthened observability, reduced latency in visibility operations, and improved maintainability through explicit interface changes.

Month: 2025-11 — Delivered key improvements to unify visibility querying, improve data integrity, and strengthen test coverage, delivering consistent behavior across SQL and Elasticsearch stores and enabling safer migrations.

2025-10: Delivered SQL Visibility enhancements for server visibility and preallocation of custom search attributes for SQL Visibility stores in temporal; replaced the struct validator library with github.com/go-playground/validator to improve validation reliability; comprehensive local testing and unit tests added; changes are configurable at runtime (visibility.persistenceCustomSearchAttributes) and designed to be non-disruptive when reducing preallocated attributes. This work strengthens observability, indexing capabilities, and reliability for SQL Visibility.

September 2025: API clarity and stability improvements in temporalio/api. Clarified deprecation of the Visibility Scan API, aligned internal behavior with ListWorkflowExecutions, and updated service.proto descriptions to reduce developer confusion and misusage. Commit-driven changes focused on improving API docs and internal consistency.

August 2025: Focused on simplifying the docker-builds setup flow to reduce deployment complexity and maintenance burden. Removed a configurable option (ES_VERSION) and hardcoded Elasticsearch version v7 directly in schema and template file paths, streamlining setup and lowering risk of misconfiguration across environments.

July 2025 focused on enhancing the Temporal visibility subsystem to deliver tangible business value through performance, reliability, and robustness improvements in the temporalio/temporal repository.