Runtime environment. Overview
The runtime environment is selected when creating a function. It provides additional libraries and environment variables that can be accessed from the function code. You can change the selected runtime environment by updating the function configuration. The preloaded runtime environment automatically updates to the latest version in the function version settings.
Runtime environment characteristics:
- Operating system: Ubuntu 18.04 LTS.
- Linux kernel: 4.19.
A first function call creates a function instance. The service uses existing function instances for new calls, if available. This lets you save time preparing the runtime environment and resources, such as DB connections and temporary files, which don't have to be re-created when the runtime environment is used again.
Note
The runtime environment is updated while relevant language version updates are released. We don't recommend using obsolete language versions.
Runtime environments
Runtime environments available in Cloud Functions.
| Name | ID | Preloaded |
|---|---|---|
| Node.js | ||
| Node.js 16 | nodejs16 |
Yes |
| Node.js 14 | nodejs14 |
No |
| Node.js 12 | nodejs12 |
No |
| PHP | ||
| PHP 7.4 | php74 |
No |
| PHP 8.0 | php8 |
No |
| Python | ||
| Python 3.9 | python39 |
Yes |
| Python 3.8 | python38 |
No |
| Python 3.7 | python37 |
No |
| Go | ||
| Go 1.17 | golang117 |
No |
| Go 1.16 | golang116 |
No |
| Java | ||
| Java 11 | java11 |
No |
| .NET Core | ||
| .NET Core 3.1 | dotnetcore31 |
No |
| R | ||
| R 4.0 | r40 |
No |
| Other | ||
| Bash | bash |
No |