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New
The latest blog posts to take off on Hacker News. 301 posts.
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Look Before You Leap – The Coming Leap Second and AWS
My colleague Mingxue Zhao sent me a guest post designed to make sure that you are aware of an important time / clock issue. Note: This post was first published on May 18, 2015. We made some important additions and corrections on May 25, 2015. — Jeff; The International Earth Rotation and Reference Systems (IERS) […]
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Signalfd is useless
UNIX (well, POSIX) signals are probably one of the worst parts of the UNIX API, and that’s a relatively high bar. A signal can be sent to your program at any point when it’s running, and you have to deal with it somehow. Traditionally, there are three ways …
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Scaling Secret: Real-Time Chat
(This is the first of a series of technical posts I intend to write, and my goal is to help other engineers learn from the experience of…
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Please stop calling databases CP or AP
This blog post has been translated into Russian , Japanese , Chinese , and Chinese again . For more detail on problems with CAP, and a proposal for an alternative, please see my paper A Critique of the CAP Theorem .
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Under the hood: Facebook’s cold storage system
Visit the post for more.
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Memory Layouts for Binary Search
Binary search is a wonderful algorithm: theoretically optimal, fast in practice, and discoverable by school children playing guessing games. Usually we think of binary search as being applied to a sorted array, and we teach it this way.
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A Quick Introduction to LXD
With the recent release of Ubuntu 15.04, aka “Vivid Vervet”, the Ubuntu community has also unveiled an early release of LXD (pronounced “lex-dee”), a new project aimed at revitalizing the use of LXC and LXC-based containers in the face of application container efforts such as Docker and rkt. In this post, I’ll provide…
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Call me maybe: Aerospike
Previously, on Jepsen, we reviewed Elasticsearch’s progress in addressing data-loss bugs during network partitions. Today, we’ll see Aerospike 3.5.4, an “ACID database”, react violently to a basic partition.
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Call me maybe: Elasticsearch 1.5.0
Previously, on Jepsen , we demonstrated stale and dirty reads in MongoDB . In this post, we return to Elasticsearch, which loses data when the network fails, nodes pause, or processes crash.
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The compiler flag that time forgot
I’m often surprised how long software can keep trying to use compatibility features ages after their best-by date. Now that GCC 4.8 builds on Tige...
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Nim binary size from 160 KB to 150 Bytes
The size of binaries in the Nim programming language seems to be a popular topic recently . Nim’s slogan is expressive, efficient, elegant , so let’s examine the efficient part in this post by exploring a few ways to reduce the size of a simple Nim Hello World binary on Linux. Along the way we will:
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Three Tales of Second System Syndrome
In the last decade, three major scripting languages embarked on project to produce a major revision to each language: Perl 6, Python 3, and...
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OS X 10.10.3 seems to have done something bad to wifi drivers
As a PSA (public service announcement), I'm reporting here that updating your Yosemite system to 10.10.3 is incredibly toxic if you use WiFi...
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Bringing Clang to Windows
As you may know, Visual Studio now supports building Android and iOS applications using Clang. We realize the need of our users to write cross-platform
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Pgsql: Create an infrastructure for parallel computation in PostgreSQL
Create an infrastructure for parallel computation in PostgreSQL. This does four basic things. First, it provides convenience routines to coordinate …
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Introducing PackageManagement in Windows 10
Access to this page requires authorization. You can try signing in or changing directories .
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Coding for SSDs
Translations: This article was translated to Simplified Chinese by Xiong Duo and to Korean by Matt Lee (이 성욱). Introduction I want to make solid-state drives (SSDs) the optimal storage solution for my key-value store project. For that reason, I had to make sure I fully understood how SSDs work, so that I can optimize
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Branchless code sequences
David Thomas's website.
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