We replaced our entire cloud database with a 400MB SQLite file and nobody noticed

Last month our AWS staging bill arrived looking like the GDP of a small island nation, entirely because our team spun up three multi-region distributed clusters to store a list of user profile bios. Enough was enough. At 2 AM on a Tuesday, we nuked the microservices, moved all queries into a single SQLite file sitting on a $5 VPS, and set a cron job to backup the file to a USB thumb drive taped behind the server rack.

Guess what happened? Latency dropped from 240ms to 1.4ms. Page loads are instantaneous. The fans on our laptops finally stopped sounding like jet engines preparing for takeoff.

Stop architecting your 40-user internal CRUD tool like you’re Netflix streaming the Super Bowl in 8K. Sometimes you don't need a multi-master distributed consensus algorithm; you just need one humble .db file and the courage to ignore Reddit architecture threads.