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Immutable Servers With Packer and Puppet

Lately I’ve been becoming more and more of a fan of is the concept of Immutable Servers while automating our infrastructure at Zapier. The concept is simple: never do server upgrades or changes on live servers, instead just buil ...
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RabbitMQ: Scheduled Message Delivery

Earlier this month I gave a presentation at ComoRichWeb on RabbitMQ and one question from an attendee was “Is it possible to publish a message to be consumed at a later date?” I answered that it wasn’t possible to the best o ...
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A Tale of Two Cultures: Hackers and Enterprise Developers

Today I found myself thinking again of what I see as two distinct cultures in the development world: Hackers and Enterprise Developers. This really isn’t any kind of a rant just an observation that I’ve been thinking over late ...
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Streaming Files from MongoDB GridFS

Not too long ago I tweeted what I felt was a small triumph on my latest project, streaming files from MongoDB GridFS for downloads (rather than pulling the whole file into memory and then serving it up). I promised to blog about t ...
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Big Company vs. Small Company

The other day I was having lunch with a friend of mine who works for a medium sized company (by medium sized I mean large, but not Fortune 500 large). Our discussions touched a variety of topics by one that caught my attention was ...
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Spring 3.1 Cache Abstraction Tutorial

One of the new features introduced in the forthcoming Spring 3.1 version is the one of cache abstraction. Spring Framework provides support for transparently adding caching into an existing Spring application. Similar to the tran ...
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