March 2026 monthly summary for flipt-client-sdks: Key features delivered: - Android SDK compatibility with AGP 9.0 and release-publishing configuration: removed redundant plugins/dependencies and added publishing for a single release variant to streamline releases. (Commit: 49c8ed6e1fffffeed4534fecf6e752cf29c78294) - Dynamic authentication with token refresh: introduced AuthenticationProvider interface and integrated with FliptClient; added FFI and Java-side changes, computed refresh scheduling based on token expiry, and robust retry/error handling. (Commit: a9a7872247e4409911283d8447de237378ce4bcc) Major bugs fixed: - CI for Android emulator: ensure JAVA_HOME is set dynamically from mise and exported to GITHUB_ENV to preserve JVM compatibility in tests. (Commits: 077f5017844d507ea8d26e383afc8736a64f2f2e; 584fd38921247cd13bd9b2956a9a7776b2345e0d) - C wrapper for Linux token refresh: added missing update_authentication wrapper mapping to the Rust library to prevent UnsatisfiedLinkError. (Commit: 4941bf9d09082dcd0c373bfd87a66ee4834baca7) Overall impact and accomplishments: - Release-ready Android SDK aligned with AGP 9.0, reducing upgrade friction and stabilizing the release pipeline. - Strengthened token-based authentication with a robust refresh mechanism, improving reliability and reducing manual maintenance. - Improved CI stability for Android emulator tests, accelerating feedback loops and reducing flaky runs. - Strengthened cross-language integration (Rust<->Java) for authentication, enabling safer maintenance and easier future improvements. Technologies/skills demonstrated: - Android Gradle Plugin and Kotlin/Java interoperability - FFI between Rust and Java, including Java-side API design and FFI testing - Token-based authentication design with dynamic refresh scheduling and retry logic - CI/CD tooling familiarity (mise, GITHUB_ENV) and emulator/Java test stability

November 2024: Implemented the regr_intercept() SQL function in QuestDB to enable y-intercept calculations for linear regression within SQL queries. The work includes RegressionInterceptFunctionFactory and robust tests, delivering broader statistical capabilities with accurate cross-type handling and edge-case coverage. This enhances analytical workflows and decision-support by enabling more complete regression analysis directly in QuestDB.

October 2024 (2024-10): QuestDB repo questdb/questdb delivered a targeted metrics clarity improvement in the core WAL tables. Primary work focused on renaming the writerLagTxnCount metric to bufferedTxnSize in wal_tables(), updating Java code and tests. Functionality remains unchanged; the change reduces user confusion and improves the accuracy and consistency of exposed metrics across dashboards and queries. No major bug fixes were recorded this month; the effort centered on refactoring, validation, and documentation of the new metric name.