docs: document LSD_CHECKPOINT_DELETE env var#3682
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Connor Braa (cwlbraa) wants to merge 5 commits intomainfrom
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docs: document LSD_CHECKPOINT_DELETE env var#3682Connor Braa (cwlbraa) wants to merge 5 commits intomainfrom
Connor Braa (cwlbraa) wants to merge 5 commits intomainfrom
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Adds agent server env var reference for the deferred checkpoint deletion feature flag, covering all configurable JSON fields (enabled, enabledWorkerOnly, pollIntervalMs, batchSize, batchSleepMs) shipped in langgraph-api#3111. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Thanks for opening a docs PR, Connor Braa (@cwlbraa)! When it's ready for review, please add the relevant reviewers:
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The feature shipped in 3111 but the queue table migration did not apply until the renumber fix in 3269, which also bumped the version to 0.7.103. Direct users to that version to avoid hitting the broken migration. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Describe the behavior in terms of enqueue/drain instead of the internal checkpointer-wrapper implementation detail. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
MongoDB checkpointer's DeleteCheckpoints explicitly returns unsupported, so the deferred-delete worker only works against the postgres backend. Flag it will become the default later so operators can plan ahead. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Mintlify preview branch generated: Site preview: https://langchain-5e9cc07a-preview-cwlbra-1776895976-34c974a.mintlify.app Changed documentation pages (preview deep links): |
Connor Braa (cwlbraa)
requested review from
William FH (hinthornw) and
Quanzheng Long (longquanzheng)
William FH (hinthornw)
approved these changes
Apr 22, 2026
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| - `enabled` (boolean, default `false`): When `true`, thread delete and prune operations enqueue checkpoints into `checkpoint_delete_queue` and return immediately, and the background worker drains the queue. |
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would it safe to flip back from true to false? if not maybe worth documenting it to avoid mistakes.
Quanzheng Long (longquanzheng)
approved these changes
Apr 22, 2026
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Summary
LSD_CHECKPOINT_DELETE, the feature flag that turns on deferred/background checkpoint deletionenabled,enabledWorkerOnly,pollIntervalMs,batchSize,batchSleepMs) with defaults and an exampleTest plan
make lint_prose FILES="src/langsmith/env-var.mdx"passes clean🤖 Generated with Claude Code