langgraph
https://github.com/langchain-ai/langgraph
Python
Build resilient language agents as graphs.
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- Issues
- time travel bug -- resuming interrupts on "replay"
- AsyncPostgresSaver enforces instance-level threading.Lock() during asynchronous execution
- perf(checkpoint-sqlite): N+1 query pattern in SqliteSaver.list() and AsyncSqliteSaver.alist()
- fix(checkpoint-postgres): avoid shared async lock for pooled async savers
- feat(langgraph): add standard reducer library for complex state merging
- fix: get_subgraphs prefix matching with shared node name prefixes
- fix(langgraph): catch CancelledError in AsyncBackgroundExecutor.__aexit__ during task cleanup
- Tool suggestion: anybrowse for agent web access with Cloudflare bypass
- feat: add restart-safety coverage for put_writes idempotency
- prebuilt: add filter_orphaned_reasoning_messages pre_model_hook
- Docs
- Python not yet supported