Excellent thought provoking article, but all the times I’ve brought in a dumb cache or bloom filter it is to save calling a micro service or hitting a DB or something so fantastically expensive (in computer time) that even a staggeringly inefficient bloom filter or just keeping lists of recently-seen values etc is a massive win. So there’s no big pressing need to microoptimise the bloom filter or whatever, and all the real profile guided optimizations point at other low hanging fruit.
Same, I was thinking about implementing a bloom filter myself, but when I put in the hit ratio and the frequencies, a simple LRU cache was going to be close enough. It's hard to justify the complexity sometimes, which is a pitty cause they are so cool.
