Exceptional breakdown. The write penalty section is probably the most underappreciated part, especially that visual showing 6 operations instead of 1. Most devs I work with focus purely on read optimizaton and then wonder why bulk inserts grind to a halt. The guideline about testing under load before adding indexes is crucial too, seen too many production fires from adding an index that accidentally changed query plans for ten other queries. The 'measure before adding' mindset needs to be default behavior not an afterthought.
Exceptional breakdown. The write penalty section is probably the most underappreciated part, especially that visual showing 6 operations instead of 1. Most devs I work with focus purely on read optimizaton and then wonder why bulk inserts grind to a halt. The guideline about testing under load before adding indexes is crucial too, seen too many production fires from adding an index that accidentally changed query plans for ten other queries. The 'measure before adding' mindset needs to be default behavior not an afterthought.
Nice
Excellent write up! Really informative