Odown product news and updates

Heroku Eco dynos sleep after 30 minutes without web traffic. The wake itself takes seconds; the rest of the delay is your app booting

Not in the external sense. Vercel's Observability alerts on anomalies in traffic it serves, but nothing checks your site from outside. Here is the split.

The nginx log line "upstream timed out (110: Connection timed out)" means nginx gave up waiting on your app server. Here is which timer fired and the fix.

Netlify does not include uptime monitoring for your site, so you add an external monitor. Here are the five checks that cover a Netlify deployment.

Cloudflare error 1020 means a firewall rule the website configured blocked your request. Here is what triggers it and how both sides fix it.

Exit code 137 means the process was killed with SIGKILL, and in containers that almost always means it ran out of memory. Here is how to confirm and fix it.

Nginx status 499 means the client closed the connection before your server answered. It is a latency symptom in your logs. Here is how to read and fix it.

Cloudflare error 522 means the connection to your origin timed out: Cloudflare waited about 19 seconds and heard nothing. Here is what to check.

Cloudflare error 521 means your origin server refused Cloudflare's connection: it is down or blocking Cloudflare's IPs. Here is the five-step fix.

Cloudflare error 524 means your origin took longer than 120 seconds to answer, so the request timed out. Here is how to fix work that outlives the limit.