June 2026: Focused on performance optimization for context caching in google/adk-python. Delivered an Efficient Context Caching feature for Plugin Invocations by introducing a configurable N-sized sliding window eviction: context windows are removed when the cache exceeds N, rather than immediately, reducing memory usage while maintaining throughput. Adapted baseline calculations from num_model_turns to invocation_start_indices to align with current architecture. Merged PR 3271, consolidating changes with the main branch. These changes lay groundwork for further caching enhancements and improve overall plugin invocation performance. Business value: reduced memory footprint, higher plugin throughput, and better scalability under concurrent workloads.

November 2025 monthly summary for google/adk-python. Focused on stabilizing the GlobalInstructionPlugin during migration from GlobalInstruction, addressing a critical invocation context bug and improving overall code quality. Delivered a fix that aligns the plugin’s invocation context with CallbackContext structure, preventing runtime errors and facilitating a smoother migration path. Enhanced codebase readability and maintainability with comprehensive typo fixes across the repository. These efforts contributed to higher stability for users adopting the newer plugin, reduced risk of downstream defects, and improved developer experience.