File cache

This section provides information on the file cache.

General information

The file cache enables you to upload a file to Cypress once and then obtain a path to the file multiple times via a specified MD5 hash.
The file cache is required to run operations. When users run tasks, this uploads an executable and all its dependencies.
Using Python, for instance, requires loading a large number of modules and dynamic link libraries. To avoid loading identical files multiple times, you only need to read them into the cache and request the path to these files in Cypress using an MD5 hash for any subsequent runs.

Computing an MD5 hash for uploaded files

To request an MD5 hash computation for an uploaded file, send compute_md5=True to the write_file command.

There are some constraints:

1. When using append, you cannot request an MD5 computation unless there was a previous write to the file with an MD5 computation.
2. A computed MD5 hash is reset if there is a call to the concatenate command and its output is written to the relevant file.

API commands

For working with the file cache, there are the put_file_to_cache and the get_file_from_cache commands.