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[PR #5524] perf(checkpoint-postgres): Reduce writes to checkpoint_blobs table #4495

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opened 2026-02-20 17:50:17 -05:00 by yindo · 0 comments
yindo commented 2026-02-20 17:50:17 -05:00
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Original Pull Request: https://github.com/langchain-ai/langgraph/pull/5524

State: closed
Merged: Yes

  • Channels containing primitive values don't need to be stored in separate rows in blobs table, as the overhead of a separate row will usually be higher than the size of the value
  • This applies for instance to all internal channels used to manage edges, so it has a big impact just from that. It can also apply to user-managed channels depending on their values
  • The same channel may switch storage between versions without any issue
**Original Pull Request:** https://github.com/langchain-ai/langgraph/pull/5524 **State:** closed **Merged:** Yes --- - Channels containing primitive values don't need to be stored in separate rows in blobs table, as the overhead of a separate row will usually be higher than the size of the value - This applies for instance to all internal channels used to manage edges, so it has a big impact just from that. It can also apply to user-managed channels depending on their values - The same channel may switch storage between versions without any issue
yindo added the pull-request label 2026-02-20 17:50:17 -05:00
yindo closed this issue 2026-02-20 17:50:17 -05:00
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Reference: langchain-ai/langgraph#4495
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