Did you miss where I said “…each service is still making calls to DBs. Many of the services depend on other services…?” I’ve seen API calls that result in hund

Did you miss where I said “…each service is still making calls to DBs. Many of the services depend on other services…?” I’ve seen API calls that result in hundreds of DB calls. While yes, of course refactoring should be done to drop that, the fact remains that if even a small number of those calls have to read from disk, the latency starts adding up. It’s also not uncommon to have horrendously suboptimal schema, with UUIDv4 as PK, JSON blobs, etc. Querying those often results in lots of disk reads simply due to RDBMS design. The only way those result in anything resembling acceptable UX is with local NVMe drives for the DB, because EBS just isn’t going to cut it.