http://alcidesfonseca.com/blog/358Comments on this post http://alcidesfonseca.com/blog/358 Tue, 06 May 2008 23:41:23 GMT http://alcidesfonseca.com/blog/358 Fri, 02 May 2008 20:15:37 GMT http://alcidesfonseca.com/blog/358 Fri, 02 May 2008 19:51:07 GMT http://alcidesfonseca.com/blog/358 Fri, 02 May 2008 16:15:28 GMT FWIW: Twitter currently has no plans to abandon RoR. Lots of our code is not in RoR, already, though. Maybe that's why people are confused. about 15 hours ago from web by van Williams.]]> http://alcidesfonseca.com/blog/358 Fri, 02 May 2008 12:39:53 GMT talk: "Index every column that appears on a WHERE clause" and that's just plain stupid. That means that when you write a new line to a table, the database will rebuild the index for "every column that appears on a WHERE clause". 3. He also says "Denormalize a lot". Anyone that knows ActiveRecord and can read Ruby must gasp at his 25th slide. So, this guy creates a "text" column in his table to be filled out with CSV that will parse later with Ruby. He removes complexity from the database (that would be a lot lighter on it) and messes with it on Ruby. i.e. for searches, I bet they are using plain SQL using their "index everything" approach. Maybe they should be using ferret (just like lucene for Ruby) to index and search all those messages and leave the database alone. Seriously, just with everything else, with Ruby and Rails you just need the right people. Maybe Cook should've been fired sooner.]]>