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Functions limitations

Published on 12 October 2021

This section contains usage limits that apply when using Serverless Functions. For limits marked with an asterisk (*), lower quotas might apply, please reach our support to increase them.

NamespacesMax Number20*Project
FunctionsMax Number50*Namespace
FunctionsMax Number50*Organization
Zip SizeMax Size100 MBFunction
Code SizeMax Size500 MBFunction
Temporary disk sizeMax Size512 MBFunction Instance
Invocation rateMax Number1000 per secondFunction
ConcurrencyMax1Function Instance
Scale (Number of simultaneous Function Instance)Max50Functions
Environment VariablesMax Number100Function + Namespace
Environment VariablesMax Size1000 charsEnvironment Variable
Secret Environment VariablesMax Number100Function + Namespace
Secret Environment VariablesMax Size65536 bytesSecret Environment Variable
Time before scale to zeroTime15mInstance
Time before scale downTime30sInstance
PayloadMax Size6MBRequest


The limits mentioned beforehand are technical limits. Account quotas are also applied.

Configuration Restrictions

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

  • Blocked Port:

    • 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)