Vercel Cron vs Netlify Scheduled Functions
Vercel and Netlify are the undisputed kings of frontend hosting. Both have recently introduced "Cron" capabilities to trigger serverless functions on a schedule. But are they the right tool for backend Python jobs?
The Similarities
Both Vercel Cron and Netlify Scheduled Functions work on the same fundamental premise: you write a serverless function (usually in JavaScript/TypeScript), configure a schedule in a configuration file (like `vercel.json` or `netlify.toml`), and the platform automatically hits that function's endpoint at the specified time.
The Strict Limitations
Because these platforms are optimized for serving web requests quickly, they impose extremely strict execution limits on scheduled tasks:
- Vercel (Hobby): 10 second timeout limit. Max 2 cron jobs.
- Netlify (Free): 10 second timeout limit.
If your scheduled task takes 11 seconds to scrape a website or query a slow database, both platforms will forcefully kill it.
Python Support
While both support Python serverless functions, the developer experience is significantly worse than Node.js. Dealing with requirements.txt installations in a serverless web function often leads to bloated deployment sizes and confusing build errors.
When to use a Dedicated Python Runner
If you are writing a Next.js app and just need to ping your database every hour, Vercel Cron is perfect.
However, if you are writing a standalone Python script that does heavy lifting, web scraping, data processing, or takes longer than 10 seconds, you need a dedicated execution environment.
LiteLambda offers Python 3.11 runtimes with 5-minute execution timeouts and pre-compiled pip packages. Keep your frontend on Vercel, and offload your heavy Python background jobs to LiteLambda.