# Platform playbooks

> Running a specific stack in production: Next.js on Vercel, APIs on Cloudflare, Rails on Fly.io, Supabase and more.

8 articles
Canonical: https://polylane.com/series/platform-playbooks/

1. [How to monitor a Django app on Render](https://polylane.com/learn/monitoring-coverage/how-to-monitor-a-django-app-on-render/): Monitor a Django app on Render: JSON logs, a real health check, failure alerts, log and metrics streams, OpenTelemetry under Gunicorn and Celery checks.
2. [How to monitor a FastAPI app on Railway: logs, traces and alerts](https://polylane.com/learn/monitoring-coverage/how-to-monitor-a-fastapi-app-on-railway/): Set up health checks, JSON logs, OpenTelemetry traces, monitors and crash alerts for a FastAPI service on Railway, with the commands and config to copy.
3. [How to monitor a Supabase app in production](https://polylane.com/learn/monitoring-coverage/how-to-monitor-a-supabase-app-in-production/): Monitor a Supabase app in production: scrape the Metrics API into Prometheus, drain logs, run SQL health checks, trace requests and alert on what matters.
4. [How to debug Cloudflare Workers errors: logs, traces and error codes](https://polylane.com/learn/troubleshooting/how-to-debug-cloudflare-workers-errors/): Debug Cloudflare Workers errors step by step: read 1101 and 1102 codes, enable Workers Logs and source maps, use wrangler tail, DevTools and local traces.
5. [How to debug Vercel function timeouts](https://polylane.com/learn/troubleshooting/how-to-debug-vercel-function-timeouts/): Debug Vercel FUNCTION_INVOCATION_TIMEOUT 504s: find the slow call with vercel logs and httpstat, fix hangs, set maxDuration and verify on a preview.
6. [Cloudflare Workers error 1101: causes and how to fix it](https://polylane.com/learn/troubleshooting/cloudflare-workers-error-1101/): Error 1101 means your Cloudflare Worker threw an uncaught JavaScript exception. Find the exception in logs, match it to its cause, fix it and roll back fast.
7. [Cloudflare Hyperdrive connection errors: causes and fixes](https://polylane.com/learn/troubleshooting/cloudflare-hyperdrive-connection-errors/): Fix Cloudflare Hyperdrive connection errors: config codes 2008 to 2016, pool exhaustion, connection_refused and stale clients reused across Worker requests.
8. [How to monitor a Convex app in production](https://polylane.com/learn/monitoring-coverage/how-to-monitor-a-convex-app-in-production/): Monitor a Convex app in production: use the Health page and CLI, stream logs to Axiom or Datadog, report exceptions to Sentry, and alert on failures.

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