Howard Chu @ SymasWhy I Used SQLite for a 250GB Production Database
"Comparative Analysis: SQLite vs. Key-Value Stores
LMDB (Lightning Memory-Mapped Database) uses a B+ Tree and mmap — architecturally identical to SQLite in mmap mode."
https://anyimossi.dev/journal/sqlite-250gb-why-sqlite/
That's not a coincidence. SQLite's support for mmap was based on lessons learned from #LMDB
https://marc.info/?l=sqlite-dev&m=144565668324618&w=2
https://marc.info/?l=sqlite-dev&m=144565668524665&w=2
https://www.mail-archive.com/sqlite-users@mailinglists.sqlite.org/msg73551.html
https://www.mail-archive.com/sqlite-users@mailinglists.sqlite.org/msg76252.html
Why I Used SQLite for a 250GB Production Database | Anyim Ossi — AI Software Engineer
An OSINT lookup tool on 250GB of scraped public data. SQLite, not Postgres — because eliminating IPC overhead mattered more than query planner sophistication. Query times fell from 4 hours to 40ms across six optimization layers.