Caching may go wrong in the world of concurrent Python and how to fix it

[margareet_]

https://tech.ringieraxelspringer.com/blog/open-source/caching-in-the-world-of-concurrent-python-harder-than-ever/8nq1c41

[PaulHoule]

Caches are not "unambiguously beneficial".

They are beneficial in many situations, but from time to time you find the case where using a cache introduces more latency because the failed cache request + the request to get the real data takes longer, or the failed cache request causes a cascading failure rather than a request to the real source.

Then there are all the problems with invalidation.