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Containers limitations

Published on 12 October 2021

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

NamespacesMax Number100*Project
ContainersMax Number1000*Organization
Total container memory**Max Size600 GiBOrganization
Image size compressedMax size250 MiBContainer
Image size uncompressedMax size1 GiBContainer
Temporary disk sizeMax size512 MiBContainer
Invocation rateMax Number1000 per secondContainer
ConcurrencyMax80Container Instance
Scale (simultaneous Container Instances)Max20Container
Environment VariablesMax Number100Container + Namespace
Environment VariablesMax Size1000 charsEnvironment Variable
Secret Environment VariablesMax Number100Container + Namespace
Secret Environment VariablesMax Size65536 bytesSecret Environment Variable
Time before scale to zeroTime15 minutesInstance
Time before scale downTime30 secondsInstance
TimeoutMax15 minutesRequest

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

** Total container memory is the sum of the memory allocated to all your containers 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.
  • Unavailable custom ports Please don’t make your containers listen on these ports which are used by our service.
    • 8008
    • 8012
    • 8013
    • 8022
    • 9090
    • 9091
  • Reserved environment variables:
    • PORT: Port on which your server should listen to default is 8080
    • SCW_*: Reserved for product configuration (for example: token validation)