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Uptime monitoring for developers. From first deploy to incident #1000.

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/ use-cases

Monitoring, by use case.

Platforms, cron jobs, certificates — what to watch and how to set it up.

How to monitor your Vercel app

Vercel tells you about builds and functions, not whether your site answers. Here is what to monitor and how to set it up in minutes.

How to monitor your Railway app

Railway's healthcheck only runs during a deploy, not after. Here is what that leaves uncovered on a long-lived container and how to monitor it in Fettle.

How to monitor your Fly app

Fly's health checks decide routing per region, not whether your app is up everywhere. Here is what to monitor across regions and how to set it up.

How to monitor your Supabase project

A Supabase project is REST, Auth, Storage and Realtime under one ref, not one service. Here is what to check separately and how to set it up.

How to monitor a cron job with a heartbeat

A cron job that stops running fails no request and throws no error. Here is how a heartbeat catches the silence before you do.

How to catch SSL certificate expiry before it hurts

Renewal is automated and mostly works, which is exactly why nobody notices when it quietly stops. Here is what to monitor and how to get warned early.