Add set_node_defaults section to LangGraph fault tolerance page#4081
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Sydney Runkle (sydney-runkle) merged 1 commit intoMay 19, 2026
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Document the new set_node_defaults() method on StateGraph that allows configuring graph-wide defaults for retry_policy, error_handler, timeout, and cache_policy. Particularly highlights the error_handler default as the most valuable new capability from PR langchain-ai/langgraph#7747. Includes: - Overview section with full example - Precedence rules (per-node overrides defaults) - Default error handler with RunnableConfig example - Applicability matrix showing which defaults apply to handler nodes - Scope note (not inherited by subgraphs) - Updated intro bullets and Limitations section
Sydney Runkle (sydney-runkle)
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Sydney Runkle (sydney-runkle)
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…4083) ## Summary - Rename the `set_node_defaults` section heading from "Graph-wide defaults with `set_node_defaults`" to "Graph defaults" - Update the anchor link in the intro to match the new heading ## Links - Linear: https://linear.app/langchain/issue/DOC-1112/update-langgraph-fault-tolerance-page-based-on-pr-7747 - Slack: https://langchain.slack.com/archives/C09G1T60QV9/p1779224166104029 - Follow-up to: #4081 ## Verification Not run; docs-only heading change. ## Reviewers Requested review from: @npentrel, @lnhsingh Co-authored-by: Docs Bot <brace@langchain.dev>
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Summary
## Graph-wide defaults with set_node_defaultssection to the LangGraph fault tolerance pageset_node_defaults()method onStateGraphintroduced in langchain-ai/langgraph#7747RunnableConfig), applicability matrix, and scope noteLinks
Verification
Not run; docs-only copy change.
Reviewers
Requested review from: Naomi Pentrel (@npentrel), Lauren Hirata Singh (@lnhsingh)