Scaling to 100M: MySQL is a Better NoSQL

MySQL is a better NoSQL. When considering a NoSQL use case, such as key/value storage, MySQL makes more sense in…

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Refactoring with Kleisli Composition

For quite awhile we have been maintaining an application that processes XML and JSON data. Usually the maintenance consists of…

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Explicit Implicit Conversion

One of the most common pattern we use on our day to day is converting objects from one type of…

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Introducing Accord: a sane validation library for Scala

Accord is an open-source (Apache-licensed) Scala validation library developed at Wix. It’s hosted on GitHub and you’re welcome to fork…

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How Many Threads Does It Take to Fill a Pool?

In recent months we have been seeing a small but persistent percentage of our operations fail with a strange exception…

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When Maven Dependency Plugin Lies

Problem: We had an integration test which creates a spring ClassPathXmlApplicationContext and while doing so the test blew up with…

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Death by Redirect

It is said that the greatest harm can come from the best intentions. We recently had a case where, because…

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Chef Happens – Managing Solaris with Chef

Adding Solaris servers to be managed by Chef was the most annoying entry in our Wix.com DevOps backlog for almost…

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