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GORUCO 2014

This presentation, by James Golick, is licensed under a Creative Commons Attribution ShareAlike 3.0
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Does your code work? Probably not. The libraries you're using probably don't work either. If you're lucky, the OS does, but even then you'll probably find something wrong if you look hard enough. Debugging is the reason that the last 20% of shipping a product usually accounts for 80% of the time. And yet, there are a million blog posts and talks about writing code, but very few about figuring out why it doesn't work right once you have. So, how do you find bugs? In this talk I'll explore a set of tools and techniques that have helped me diagnose defects in everything from php code to malloc implementations. One time I even used this strategy to diagnose an outage in a codebase I'd never seen that was written in a language I barely knew and a framework I'd never heard of - in less than 5 minutes. You'll walk away with this talk with everything you need to learn how to debug anything.

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