Instagram had a nice post on how they did their PK generation/sharding a couple years back. Still a good read, http://instagram-engineering.tumblr.com/post/1085

Instagram had a nice post on how they did their PK generation/sharding a couple years back. Still a good read, http://instagram-engineering.tumblr.com/post/10853187575/sharding-ids-at-instagram http://instagram-engineering.tumblr.com/post/10853187575/sha.... Previously discuss here, http://news.ycombinator.com/item?id=3058327 http://news.ycombinator.com/item?id=3058327