feat(cdp): cache slack channel responses #33583
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PR Summary
Implements caching for Slack channel responses to prevent rate limiting issues when users configure multiple Slack destinations for a single workspace.
- Added 60-minute caching for Slack channel lists in
posthog/api/integration.pywhile keeping channel-specific lookups uncached - Added new
actionfeature infrontend/src/lib/lemon-ui/LemonInputSelectto support 'Refresh channels' button with 5-minute cooldown - Updated
frontend/src/lib/integrations/slackIntegrationLogic.tsto includelastRefreshedAttimestamp andforceRefreshparameter - Modified
frontend/src/lib/api.tsto handle cache control viaforceRefreshparameter and return timing information - Implemented cache isolation by integration ID and private channel access state
5 files reviewed, 5 comments
Edit PR Review Bot Settings | Greptile
benjackwhite
approved these changes
Jun 12, 2025
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Important
👉 Stay up-to-date with PostHog coding conventions for a smoother review.
Problem
We are starting to get some rate limit issues when trying to fetch Slack channels
https://us.posthog.com/project/2/error_tracking/6e6650b3-7b15-4396-a6d7-70c38fb035de
Usually it's a single customer who is trying to configure multiple Slack destinations for a single workspace (insight).
Changes
Inspired by Zapier
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How did you test this code?