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That WoW server blade
A post by August Lilleaas, published August 08, 2014.
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Unicorn Unix Magic Tricks
This post is based on the talk of the same name I gave at the Arrrrcamp conference in Ghent, Belgium on October 2nd, 2014. You can find the slides here and the video recording here .
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Basic Concepts of High Availability Linux
When considering to build a high availability cluster based on Linux, it’s easy to find all kinds of how-to’s explaining the basic tooling and configuration. Most of them forget to explain some of the basic concepts of high availability. In this post I’ll try to explain them. To build a high availability cluster that…
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Linux perf rides the rocket
Kernel Line Tracing: Linux perf Rides the Rocket
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Link-time optimization in GCC, part 3 – LibreOffice
After Firefox , I decided to look into LibreOffice performance with link time optimizations (LTO) and profile feedback (FDO). This post was ...
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ZooKeeper: Wait-free coordination for Internet-scale systems
Zookeeper is an Apache project for providing coordination services to distributed systems. ZooKeeper aims to provide a simple kernel (a fil...
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Call me maybe: MongoDB (2013)
Previously in Jepsen , we discussed Redis . In this post, we’ll see MongoDB drop a phenomenal amount of data. See also: followup analyses of 2.6.7 and 3.4.0-rc3 .
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Finite State Entropy - A new breed of entropy coder
In compression theory, the entropy encoding stage is typically the last stage of a compression algorithm, the one where the gains from t...
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Distributed systems for fun and profit (free ebook)
git , Single page HTML , Kindle .mobi , PDF , .epub , HTML for printing , book cover .
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You Don't Want XTS
XTS is the de-facto standard disk encryption mode, which makes it look like a good general-purpose one. It isn't. What disk encryption actually promises, and why XTS's guarantees don't travel.
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Nick Craver - What it takes to run Stack Overflow
I like to think of Stack Overflow as running with scale but not at scale. By that I meant we run very efficiently, but I still don’t think of us as “big”, n...
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DNSSEC Downtime: List of Outages & Validation Failures
Major DNSSEC Outages and Validation Failures
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How Protothreads Really Work
What goes on behind the magical macros in the C protothreads library? Why are they macros? How do the macros work? Read on for the explanation.
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Performance is a Feature
We’ve always put a heavy emphasis on performance at Stack Overflow and Stack Exchange. Not just because we’re performance wonks (guilty!), but because we think speed is a competitive advantage. There’s plenty of experimental data proving that the slower your website loads and displays, the less people
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A Whole New World
This talk announces the most ambitious software project I've ever undertaken, then considers why its existence is so surprising (and in some cases frustrating) to people.