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supabase/apps/docs/content/guides/functions/limits.mdx
Lakshan Perera 51c3bf0404 feat: add a guide on recursive / nested function calls (#43623)
Adds a guide for the recently introduced recursive/nested function
rate-limits.

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---
id: 'functions-limits'
title: 'Limits'
description: "Limits applied Edge Functions in Supabase's hosted platform."
subtitle: "Limits applied Edge Functions in Supabase's hosted platform."
---
## Runtime limits
- Maximum Memory: 256MB
- Maximum Duration (Wall clock limit):
This is the duration an Edge Function worker will stay active. During this period, a worker can serve multiple requests or process background tasks.
- Free plan: 150s
- Paid plans: 400s
- Maximum CPU Time: 2s (Amount of actual time spent on the CPU per request - does not include async I/O.)
- Request idle timeout: 150s (If an Edge Function doesn't send a response before the timeout, 504 Gateway Timeout will be returned)
## Platform limits
- Maximum Function Size: 20MB (After bundling using CLI)
- Maximum no. of Functions per project:
- Free: 100
- Pro: 500
- Team: 1000
- Enterprise: Unlimited
- Maximum log message length: 10,000 characters
- Log event threshold: 100 events per 10 seconds
- Recursive/Nested Function Calling: ~5000 requests per minute [more details](/docs/guides/functions/recursive-functions)
### Secrets
- Maximum number of secrets per project: **100**
- Secret name length: up to **256** characters
- Maximum secret size: **48 KiB** (**24,576** characters)
- Names must NOT start with the prefix `SUPABASE_` (this prefix is reserved).
## Other limits & restrictions
- Outgoing connections to ports `25` and `587` are not allowed.
- Serving of HTML content is only supported with [custom domains](/docs/reference/cli/supabase-domains) (Otherwise `GET` requests that return `text/html` will be rewritten to `text/plain`).
- Web Worker API (or Node `vm` API) are not available.
- Static files cannot be deployed using the API flag. You need to build them with [Docker on the CLI](/docs/guides/functions/quickstart#step-6-deploy-to-production).
- Node Libraries that require multithreading are not supported. Examples: [`libvips`](https://github.com/libvips/libvips), [sharp](https://github.com/lovell/sharp).