> My experience doing perf optimizations... without realizing it's expensive). Completely agree and this has been my experience ae well. To this I'll also add,

> My experience doing perf optimizations... without realizing it's expensive). Completely agree and this has been my experience ae well. To this I'll also add, inadequate thought put into data modelling. One would have to think lesser about query performance or cost of overfetching if data is modelled around the needs of the system it would serve instead of just modelling real life entries and their relationships as is, straight onto the database.