Use case
Scheduled cache warming & pre-render triggers
Keep popular pages warm before users arrive. Crontap pings your revalidation endpoints, CDN warmers or custom pre-render jobs on a schedule, so the first visitor after a deploy or data refresh never waits for a cold cache.
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The problem
Why this is painful without the right tool
- Static pages and ISR routes go cold overnight; the first visitor in the morning pays for a full rebuild.
- After a data refresh, dashboards and product pages render slowly until someone hits them and populates the cache.
- Vercel and Netlify cron offerings are minimal and tied to the platform; moving between them means rewriting your scheduling.
- Running your own cache-warming script on a cron inside your app means keeping a worker alive 24/7 for a 2-second task.
The fix
How Crontap solves it
Crontap hits your warming endpoints (Next.js revalidatePath/revalidateTag routes, a CDN warmer, a simple URL-fetch script) on whatever cadence you need. Every run is logged, failures retry, and you get notified if pages start returning 5xx.
0 */2 * * *For Next.js on Vercel, the usual pattern is: build a /api/revalidate route that accepts an array of paths, iterates and calls revalidatePath, then have Crontap POST it a list on a schedule. For plain CDN warming, point Crontap at a script that just GETs your most important URLs. For ISR pages that depend on a slow data source, combine the two: refresh data on one cron, warm pages 30 seconds later on another.
If you're migrating off Vercel Cron or Netlify Functions, this pattern works identically anywhere your endpoint is reachable by HTTP.
FAQ
Common questions
- Can Crontap replace Vercel Cron if I move off their paid tier?
- Yes. Vercel Cron is just an HTTP ping on a schedule. Crontap does the same from the outside, keeps working regardless of your hosting provider, and adds retries, logs and failure alerts on top. You'd point Crontap at the same endpoint your Vercel Cron was calling.
- How do I avoid warming every page and hammering my database?
- Warm selectively. Build a small endpoint that returns (or accepts) a prioritized list of URLs (the top 50 by traffic, or pages tagged "home", "pricing", "top-products") and have Crontap POST that list every couple of hours. Adjust the cadence based on how fast your data changes.
- What about authentication on the revalidation endpoint?
- Add a secret header to the schedule (X-Crontap-Token or whatever you like) and check it on your endpoint. Crontap supports arbitrary custom headers per schedule, so you can keep your revalidation endpoint private without opening it to the internet.
Related guides
Adjacent use cases
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