Using the cache
The cache is intended for temporary data storage. As such, each stored value is persisted for a maximum of 60 days. (To set a shorter expiration period, use "cache" action's "ttl" option.)
The cache is not intended for large value storage. As such, each stored value is limited to a maximum of 256 kilobytes.
For storing larger values, consider using the "ftp" action to upload data to your own storage service, possibly using a service like Couchdrop as a intermediary. To read larger values in your task, use the "http" action to perform a GET request, then respond to the action's results.