As database web-dev newbie (or at least elementary level), I'm trying to get up to speed on optimization issues for my growing rdbms.<p>I learn a lot from studying examples, and I'm really impressed with the speed of HN's performance / data freshness. Has there been a HN post that describes the HN-news database structure behind its burgeoning service? [ I tried some search within site and via searchyc, but general terms like "database structure" yield way too much, and I've not known what terms would helpfully narrow search. ] Thanks!