What's the corresponding story re security for cloud filestore?
I do not know if Cloud Filestore offers encryption on the NFS application layer.
[1] https://cloud.google.com/security/encryption-in-transit/#vir...
EFS is not even in the same ballpark in terms of speed :/
The application had grown and ran in production over a number of years using NFS for storage before it was moved into AWS, so this probably naturally steered devs away from trying to use the shared file storage as a high performance cache (eg they might try it, and find it to be slow, and figure out a different way of doing whatever they needed to do, probably using the db).
Our usage pattern for NFS did not generally involve needing to read or write many small tiny files with any degree of performance. E.g. we might need to do reads/writes of dozens of files, each of a few mb in a process, with the overall running time of the process being largely governed by our DB performance / patches of poorly written algorithmic code running in a slow scripting language. Amdahl's law - for us making the NFS access go infinitely fast or 5x slower hardly changes the overall total process execution time.
I can certainly appreciate that EFS is an abysmally slow for dealing with large numbers of reads/ writes of tiny files, in another part of the system one of my colleagues set up a read only cache of a large number of tiny files in EFS, due to the per-file write latency it took around a week to load in < 100gb of data.