February 2026 concise monthly summary for yorkie-js-sdk focusing on business value and technical achievements. Delivered Channel Session Terminology Refactor and API consistency to align the SDK with domain concepts and improve maintainability.

Concise monthly summary for 2026-01 focusing on feature delivery and integration across Yorkie JS SDK and CodePair, with emphasis on business value and technical accomplishments.

December 2025 monthly summary for yorkie-js-sdk: Focused on establishing naming consistency for Session Management. Delivered a cross-component rename from presence_count to session_count to better reflect the session-tracking functionality and align with the feature scope. The change is recorded in commit 4e1896b9e9e35ecc866a66a127669293a6281223 with message 'Rename presence_count to session_count (#1142)'. No major bugs fixed this month; emphasis is on refactor quality, maintainability, and preparation for downstream integrations. Result: improved developer clarity, reduced risk of feature drift, and smoother onboarding for future work.

November 2025 (yorkie-js-sdk) monthly summary: Delivered Channel API refinement and a GetChannels demonstration in the Next.js presence app. Refined x-shard-key format for channel APIs from API_KEY/Channel_key to API_KEY/Channel_1_level_key_path and added a GetChannels API usage example in the Next.js presence app to showcase channel retrieval workflow. No major bugs fixed this month. Impact: clearer API surface, improved developer experience for channel operations, and a practical demonstration of channel retrieval in a real app. Technologies demonstrated: API design/refinement, Next.js integration, and example-driven documentation.

October 2025: Delivered CRDT deletion consistency with Last-Write-Wins (LWW) in RGATreeSplit for yorkie-js-sdk, enabling correct conflict resolution for concurrent deletions across distributed clients. Implemented robust tombstone handling and improved overlapping deletion logic. Fixed removedAt timestamp handling for text deletions and tree deletions to ensure data integrity. These changes strengthen cross-client synchronization, reduce reconciliation errors, and enhance real-time collaboration reliability.

August 2025: Focused on stabilizing array operation semantics by aligning Array.Move and Array.Set with the Go SDK, fixing Element.Remove condition to prevent divergence and ensure consistent behavior across operations. This work enhances cross-language data consistency, reduces edge-case bugs, and improves reliability for developers integrating yorkie-js-sdk across platforms.

March 2025—Yorkie JS SDK delivered a focused set of reliability, UX, and developer experience improvements. Key features include improved connection resilience during page unloads, automatic recovery on subscription and attachment edge cases, real-time connection status exposure in React Binder, and practical usage examples for document limits that aid adoption and correct usage.

February 2025 summary for yorkie-js-sdk focused on instrumentation and analytics enhancements to support MAU data collection during client activation. Implemented MAU analytics metadata by extending the ActivateClientRequest proto and adding a TypeScript implementation; updated the Client to store and pass the MAU metadata during activation, enabling richer analytics and more accurate activation funnel metrics. Impact and value: Provides a foundation for MAU tracking across activation, improving analytics fidelity, enabling data-driven product decisions, and supporting future analytics integrations. Notes: No major bugs fixed this month; primary effort concentrated on instrumentation and cross-language metadata propagation.