I don't see any mention of the data size or volume of transactions? Also, your API response times were worse after you finished and optimized, and that's a succ

I don't see any mention of the data size or volume of transactions? Also, your API response times were worse after you finished and optimized, and that's a success? or you're comparing historical SQLite vs new PostgreSQL? I kinda see this more as a rewrite than a database migration (which I'm going through now from SQL Server to PostgreSQL)