3 ms·

Cache invalidation is hard :) almost as hard as semantically naming things in a way that is clear now, and in the future.

• staunton 3y ago
  ... the famous Two Hard Things, together with off-by-one errors.
  • tmtvl 3y ago
    concurrency With 3 it's Things Hard.
    • kuchenbecker 3y ago
      Concurrency is hard because it's difficult to know if the value you have cached in memory is valid or invalid. As soon as a value is read it's cached. Therefore Concurrency reduces to Cache invalidation and there are again only two hard problems :)