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pypi / launchdarkly-server-sdk

launchdarkly-server-sdk

What changed in launchdarkly-server-sdk 9, from its official release notes, upgrade guides and advisories. Sources checked 2026-10-20.

1 deprecations2 behavior and defaults7 fixes and other

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launchdarkly-server-sdk 910 changes

Deprecations 1

  • The SDK warns that payload filtering has no effect with FDv2.

    9.18.0release notes

Behavior and default changes 2

  • In FDv1, the SDK retries indefinitely after a data source failure instead of stopping permanently.

    9.18.0release notes

  • The SDK warns when used in a forked process without postfork.

    9.18.0release notes

Fixes and other changes 7

  • Stream-init durations and FDv2 state windows now use monotonic clocks.

    9.18.2release notes

  • Reuses an in-flight big segment status poll instead of querying twice.

    9.18.1release notes

  • The cached-data evaluation warning is logged only once per client.

    9.18.0release notes

  • The SDK reads all items when a collection is empty.

    9.18.0release notes

  • Invalid values produce a warning and use the documented default.

    9.18.0release notes

  • A slow callback no longer reduces the repeating task wait duration.

    9.18.0release notes

  • The async client reports a distinct User-Agent.

    9.18.0release notes