Re:De-cloud and de-K8s – Bringing our apps back home
by osigurdson on Friday March 24, 2023 @08:50AM
(#35288355)
>> ~500us (that is microseconds).
500us is slow. This kind of performance does not remotely obsolete an LRU cache (main memory access is ~5000X faster).
500us is essentially intra-datacenter latency. Obviously your data is in memory on the B-Tree server as there is no room in this budget for disk IO. Postgres will perform just as well if data is in memory hitting a hash index (even B-Tree probably). I don't think the B-Tree key-value store you mention is adding much. Use Redis or even just Postgres.
500us is slow. This kind of performance does not remotely obsolete an LRU cache (main memory access is ~5000X faster).
500us is essentially intra-datacenter latency. Obviously your data is in memory on the B-Tree server as there is no room in this budget for disk IO. Postgres will perform just as well if data is in memory hitting a hash index (even B-Tree probably). I don't think the B-Tree key-value store you mention is adding much. Use Redis or even just Postgres.