“The latest #SQLite 3.8.7 alpha version is 50% faster than the 3.7.17 release”
▻http://permalink.gmane.org/gmane.comp.db.sqlite.general/90549
Each micro-optimization might improve the performance
by as little as 0.05%. If we get one that improves performance by 0.25%,
that is considered a huge win. Each of these optimizations is unmeasurable
on a real-world system (we have to use cachegrind to get repeatable
run-times) but if you do enough of them, they add up.