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I saw this thread: How often are new SO versions deployed?

  • You are using CI and unit tests, right?
  • Do you do anything more before pushing out new releases?
  • What kind of guidelines do you follow when writing unit tests?

Basically, I'm wondering how you make sure that each release is good enough.

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To apply the job there? – YOU Apr 23 '11 at 21:03
Jeff explains in depth how the software development process at SO works in his profile. (scroll down the box). Oh, and this – Pëkka Apr 23 '11 at 21:04
hehe, stabilt svar Pekka. – jgauffin Apr 23 '11 at 21:10
What are these "unit tests" you speak of??? Also just in case there's any title confusion from the question title, is a different code base (as are careers and area 51), they're all deployed independently. – Nick Craver Apr 23 '11 at 22:15
BWAHAHAHAHAHAHAHAHAHA! hee hee hee hoo boy you can sure crack a joke – Adam Davis Apr 24 '11 at 0:53
@Arjan I had a long unbroken line, but deleted that and added one with spaces so it would linebreak without messing up the page format. Using FF 4 it appeared fine to me, but I suppose it messed someone up somewhere, because it indeed has been edited to remove the majority of my LOLing. It's a one-off joke, though, so it's not as though it matters. – Adam Davis Apr 25 '11 at 14:33
Now I feel stupid for not seeing those spaces, @Adam. ;-) But on the other hand: it's nice that the Firefox bug is consistent then! – Arjan Apr 25 '11 at 15:07
up vote 5 down vote accepted

Herding Code 110 just came out today; it's an interview with two SO developers (Geoff Dalgas and Jarrod Dixon). They discuss some of their process:

  • How do you share data when developing with a remote team? Geoff talks about how they started with the Database Project type, but moved to SQL scripts, ending with a migration tool. Jon gets to say “idempotent”.
  • Geoff and Jarrod talk about how they’ve moved form Subversion to Mercurial.
  • Jon asks how code moves from local development to a production server. Geoff talks about the build and deployment process.
  • Kevin asks how much the process has changed over the years.
  • Geoff talks about how features first hit Meta, then the “others” tier (everything but StackOverflow), then to StackOverflow.
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We practice FDD: faith driven development. We believe our code will work.

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The software development process is very much test-orientated as I believe that SO engages tens of thousands of regression testers, who are happy to be paid with virtual currency.

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