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PostHog · Query optimization

7 skills found.
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1

Produce and structure slow-query performance reports for PostHog's production ClickHouse (US and EU).

PostHog/posthog40k—~5.1kAutomated safety check: PassUnknowntoday
2

Pull and interpret production experiment query-performance data from the staff-only /api/debugchqueries endpoints backing the /experiments/staff scene: slowest experiment queries, precompute…

PostHog/posthog40k—~3.7kAutomated safety check: PassUnknowntoday
3

Determine which PostHog team owns a file, directory, or code path, or enumerate all code a team owns (via distributed owners.yaml, products//product.yaml, and .github/CODEOWNERS).

PostHog/posthog40k—~1.5kAutomated safety check: PassUnknowntoday
4

Explore and diagnose a PostHog endpoint's execution logs — error messages, failed runs, cache misses, slow runs, or unexpected row counts during endpoint invocations.

PostHog/posthog40k—~1.7kAutomated safety check: PassUnknowntoday
5

Run read-only SQL against the local Postgres app database (SELECT, EXPLAIN, EXPLAIN ANALYZE on SELECT).

PostHog/posthog40k—~2.5kAutomated safety check: NotesUnknowntoday
6

Runs read-only production database analysis through PostHog's internal Metabase instances.

PostHog/posthog40k—~2.8kAutomated safety check: PassUnknowntoday
7

Profiles slow PostHog API endpoints when the main cost is in Postgres or Python.

PostHog/posthog40k—~1kAutomated safety check: PassUnknowntoday