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LaunchDarkly · Developer toolsAug 26, 2026, 20:00 UTC

Flag delivery errors in Streaming API

MinorConfig changeUpdated 15h ago
Aug 26, 20:00 UTCAug 26, 20:00 UTC
Duration
0m
Impact
Minor
Root cause
Config change
LaunchDarkly, 90 days
16 incidents
Affected
Server-side streaming APIFlag Delivery Network (core functionality) - Server-side streaming API
Status page

Final update

This incident has been resolved. Between 12:00 and 12:12 PM PDT on August 26, server-side SDKs establishing new streaming connections experienced elevated error rates. Existing streaming connections were not affected, and polling requests continued to be served with error rates below 1%. Some requests to the LaunchDarkly web application also experienced elevated errors between approximately 11:29 AM and 12:03 PM PDT. The issue was caused by an internal configuration change, which has been reverted. All systems have recovered and are operating normally. No customer data was lost or compromised.

Timeline

  1. Resolved · Aug 26, 20:00 UTC
    This incident has been resolved. Between 12:00 and 12:12 PM PDT on August 26, server-side SDKs establishing new streaming connections experienced elevated error rates. Existing streaming connections were not affected, and polling requests continued to be served with error rates below 1%. Some requests to the LaunchDarkly web application also experienced elevated errors between approximately 11:29 AM and 12:03 PM PDT. The issue was caused by an internal configuration change, which has been reverted. All systems have recovered and are operating normally. No customer data was lost or compromised.
  2. Monitoring · Aug 26, 19:45 UTC
    Server-side streaming requests experienced elevated error rates between approximately 12:00 p.m. and 12:12 p.m. PDT, and some SDKs establishing new streaming connections may have been unable to connect. Polling request error rates remained below 1% throughout the incident. No customer data was lost or compromised. We apologize for the disruption.

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Full history

Also caused by configuration change

All
StartedIncidentDuration
Sep 2218:20 UTCPhone Number APIs and Console Were Returning Incorrect 404 ResponsesTwilio0m
Sep 1622:30 UTCHyperdrive Elevated Origin Connection Failure RatesCloudflare0m
Sep 1211:04 UTCSome customers experiencing blurry image previews and download issuesSlack8h 56m
Sep 1107:18 UTCINC20000213Snowflake6h 1m
Sep 407:34 UTCINC20000199Snowflake2h 36m
Sep 109:58 UTCINC20000190Snowflake3h 52m

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