Maybe the monolith shouldn't use PHP and MySQL. But what about, say, a high-perf...

Maybe the monolith shouldn't use PHP and MySQL. But what about, say, a high-performance managed runtime (e.g. JVM or CLR) and SQLite? Expensify's findings [1] suggest that with vertical scaling, SQLite can go very far.

[1]: https://blog.expensify.com/2018/01/08/scaling-sqlite-to-4m-q...