All applications deployed on appfleet can use the available ephemeral storage for temporary caching of data.
/cache is a special directory you can use to store there data that you want to persist between deployments of new versions of your app.
All other files and directories you create will be complete lost after every "Pull and Deploy" you do. But anything stored in /cache will remain accessible and won't be deleted.
It should be used as a caching mechanism to improve the performance of your application.
Please note that the data will eventually be lost as we do maintenance and migrate clusters to new hardware. /cache is not a permanent storage solution and should not be used as such