Functions limitations

Published on 12 October 2021

This section contains usage limits that apply when using Serverless Functions.

Resources	Criteria	Limits	Scope
Namespaces	Max Number	100*	Project
Functions	Max Number	1000*	Organization
Total function memory**	Max Size	600 GiB	Organization
Zip Size	Max Size	100 MiB	Function
Code Size	Max Size	500 MiB	Function
Temporary disk size	Max Size	512 MiB	Function Instance
Invocation rate	Max Number	1000 per second	Function
Concurrency	Max	1	Function Instance
Scale (Number of simultaneous Function Instance)	Max	50	Functions
Environment Variables	Max Number	100	Function + Namespace
Environment Variables	Max Size	1000 chars	Environment Variable
Secret Environment Variables	Max Number	100	Function + Namespace
Secret Environment Variables	Max Size	65536 bytes	Secret Environment Variable
Time before scale to zero	Time	15 minutes	Instance
Time before scale down	Time	30 seconds	Instance
Timeout	Max	15 minutes	Request
Payload	Max Size	6 MiB	Request

* Lower limits may apply before account verification. Please contact our support team if you have any questions.

** Total function memory is the sum of the memory allocated to all your functions at their maximum Scale.

These limits are enforced as Account quotas.

Configuration Restrictions

In order to ensure the proper functioning of the product, we restrict the use of certain ports and environment variables.

Blocked ports:
- 25: Due to potential abuse (spam), no outbound traffic is allowed through this port.
- 465: Due to potential abuse (spam), no outbound traffic is allowed through this port.
Reserved environment variables:
- SCW_*: Reserved for product configuration (for example: token validation)