QCon London 2009: Upgrading Twitter without service disruptions

Evan Weaver from Twitter presented a talk on Twitter software upgrades, titled Improving running components as part of the Systems that never stop track at QCon London 2009 conference last Friday. The talk focused on several upgrades performed since last May, while Twitter was experiencing serious performance problems. Continue reading

Cucumber: Next Generation Ruby BDD tool

During his Executable User Stories with RSpec and BDD session at Agile 2008 today,
Aslak Hellesøy presented Cucumber, a new rewrite of RSpec Story Runner. According to Aslak, Cucumber is easier to use than the previous Story Runner. It also supports internationalisation, executing from the command line or rake, has colour coding and better error reporting. Continue reading