24961250304
95%
master: 95%

Ran 26 Apr 2026 04:21PM UTC

Jobs 1

Files 184

Run time 1min

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Committed 26 Apr 2026 04:18PM UTC coverage: 95.443%. Remained the same

Build # 24961250304

Build Type

push

github

Committed by

mroderick

Commit Message

feat: add nginx reverse proxy for Plausible analytics

- Proxy Plausible script and event API through nginx to bypass adblockers
- Add DNS resolver (Quad9 9.9.9.9) for upstream domain resolution
- Add proxy_cache in /dev/shm for Plausible script (5m TTL, 100m max)
- Add security headers (X-Frame-Options, X-Content-Type-Options, X-XSS-Protection, Referrer-Policy)
- Configure Puma to bind to Unix socket when nginx config exists
- Signal nginx buildpack readiness via /tmp/app-initialized file

## Lessons learned

Deviations from initial plan:
- Used /dev/shm (tmpfs) for proxy_cache instead of /tmp (limited space)
- Used ENV detection for nginx config file presence, not DYNO var (not available on all dynos)
- Moved nginx 'set' directives inside server block (required by nginx)
- Had to add DNS resolver manually (Heroku's resolver not automatically available in proxy_pass)

Key technical discoveries:
- heroku-buildpack-nginx waits for /tmp/app-initialized file before starting nginx
- nginx 'set' directive only works in server/location contexts, not http block
- Puma must bind to unix socket AND signal readiness for nginx to connect
- proxy_cache in /dev/shm persists across dyno restarts (vs /tmp which doesn't)

See: github.com/codebar/planner/discussions/2580

Coverage Stats

3519 of 3687 relevant lines covered (95.44%)

47.35 hits per line

Jobs

ID	Job ID	Ran	Files	Coverage
1	24961250304.1	26 Apr 2026 04:21PM UTC	1104	69.78	GitHub Action Run

mroderick / codebar-planner / 24961250304
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master: 95%

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