Twitter's experience was also on pre-1.9 Ruby, ie. before YARV.
Ruby itself has made major jumps forward in performance since then. Much of Ruby's reputation for slowness was earned on an interpreter that no longer exists. It's still not the fastest dog on the track, but it is a ton better than those earlier days.
Ruby itself has made major jumps forward in performance since then. Much of Ruby's reputation for slowness was earned on an interpreter that no longer exists. It's still not the fastest dog on the track, but it is a ton better than those earlier days.