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5/18/12 Standup – Performance without downtime please


Q: A team is looking for options to test their app’s response times under load. What’s the recommended tool?

A: Browser Mob was recommended as a hosted option. They have scripted browsers that make requests against your site.

Tsung is an Erlang project that can send a bunch of traffic to your site.

Q: Is it possible to deploy without downtime to Heroku?

A: The closest option is to have two apps that share a single database and coordinate your deploys and A/B which one serves the app publicly. This is clunky. Perhaps Heroku is working on a supported solution for rolling restarts of dynos.

  • I dream of rolling restarts on Heroku, it causes us a huge amount of pain. Love to hear more about your app-switching setup.

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