|Obviously things took longer than intended and expected, but in the end:|
Items moved from /12345 to /12/34/12345. HN now starts in one fifth the time, and better utilizes the filesystem cache. Backup speeds are also improved.
Profiles moved from /kogir to /ko/gi/kogir, and from /KogIr to /%k/og/%kog%ir, which works on case-insensitive filesystems. Similar performance improvements were observed.
Passwords moved from a 45MB user->hash mapping file into user profiles themselves. Previously, this mapping file was re-written in its entirety every time a new account was created, and is why the site went down on May 18th. New account creation is now incredibly lightweight, and should allow us to further limit and possibly eliminate our use of captchas.
There were additional changes to support new features currently in the pipeline, but which we're not yet ready to announce.
I'm sorry that we were offline for so long. Nothing else we currently have planned should require anything more than a simple restart, so with any luck this will be the last major disruption the quarter, and maybe even this year.