“Just put a cache in front of it to speed it up” is up there along with everyone’s favourite misunderstood “(premature) optimisation is the root of all evil” wh

“Just put a cache in front of it to speed it up” is up there along with everyone’s favourite misunderstood “(premature) optimisation is the root of all evil” when it comes to performance and efficient software in my opinion. Caching is mostly a lie. Redis will not “make” your application faster. It will just let you pretend the problem doesn’t exist for a while, and then when the caching eventually falls over, you will be even more stuck, because you’re now past your scaling limits, with no more defenses left and software that has been (continually) built without the understanding of its performance requirements.