Outage in PostHog
Event ingestion: processing delays
Resolved Minor
February 27, 2026 - Started 4 days ago
- Lasted about 1 hour
Incident Report
Summary AI Generated
PostHog experienced processing delays in their event ingestion pipeline at the final Clickhouse ingestion stage, causing events to take longer than usual to appear in the product. While no data was lost, users experienced delays in seeing events show up in PostHog apps and queries. The processing delays were resolved after 1.4 hours with processing times returning to normal levels.
We’ve identified processing delays in the event ingestion pipeline at the final Clickhouse ingestion stage. Events may take longer than usual to appear in the product. Data is not lost but may not show in PostHog apps and queries until the processing delay is resolved.
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Latest Updates ( sorted recent to last )
MONITORING
4 days ago - at 02/27/2026 09:45AM
Processing times in the event ingestion pipeline have recovered to normal levels, but we're continuing to monitor the situation.
INVESTIGATING
4 days ago - at 02/27/2026 09:15AM
We’ve identified processing delays in the event ingestion pipeline at the final Clickhouse ingestion stage. Events may take longer than usual to appear in the product. Data is not lost but may not show in PostHog apps and queries until the processing delay is resolved.
Latest PostHog outages
Errors loading some queries / dashboards - about 15 hours ago
Web app not accessibe - about 19 hours ago
Feature flags API: elevated error rates - about 19 hours ago
PostHog AI: elevated API error rates - about 23 hours ago
Event ingestion: processing delays - 5 days ago
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