Environment

Environment variables

A list of environment variables that are defined in the Cloud Functions runtime environment and can be used by functions.

Key	Value
`_HANDLER`	The handler location specified for the function.
`AWS_LAMBDA_RUNTIME_API`	The runtime host and API port.
`LAMBDA_RUNTIME_DIR`	The path to the runtime libraries.
`LAMBDA_TASK_ROOT`	The path to your function code.
`PATH`	The set of folders with executable files.

You can add environment variables in the management console.

User files are stored in two directories:

/function/code: The user's working directory. It contains all the code of your function and all the files uploaded as a ZIP archive. You can use a relative path to access it.
/tmp: A directory to store temporary files used for optimizing repeated function instance calls. The maximum size of temporary files is limited to 512 MB.