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fun-runtime.md

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copyright lastupdated keywords subcollection
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2023, 2023
2023-10-17
code engine, functions, stateless code snippet, code snippet, stateless
codeengine

{{site.data.keyword.attribute-definition-list}}

Function runtimes

{: #fun-runtime}

{{site.data.keyword.codeengineshort}} includes Managed runtimes that you can use for your functions. {: shortdesc}

Managed runtimes include Node.js and Python versions and specific CPU and memory combinations. These runtimes are optimized for fast startup. These runtimes are pre-warmed, which avoids the overhead of pulling container images and starting containers and processes. Your code is injected into an already running container.

Need to deploy a container image? See Working with apps or Working with jobs and job runs. Not sure what type of {{site.data.keyword.codeengineshort}} workload to create? See Planning for {{site.data.keyword.codeengineshort}}. {: tip}

Supported managed runtimes for functions on {{site.data.keyword.codeengineshort}}

{: #fun-supported-managed}

The following runtimes are supported as managed runtimes.

  • Node.js 18
  • Python 3.11

Supported CPU and memory combinations for functions

{: #fun-supported-combo}

See the following list for valid combinations of CPU and memory for functions.

  • 0.25 vCPU and 1 GB memory
  • 0.5 vCPU and 2 GB memory (Default)
  • 1 vCPU and 4 GB memory

For memory and CPU information, see Supported memory and CPU combinations.