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Why we switched from Python to Go
Deciding on a programming language is always a difficult choice, learn why Stream switched from Python to Go as our language of choice.
Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 498 posts.
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Postmortem of database outage of January 31
Postmortem on the database outage of January 31 2017 with the lessons we learned.
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PHP 7 Virtual Machine
This article aims to provide an overview of the Zend Virtual Machine, as it is found in PHP 7. This is not a comprehensive description, but I try to cover most of the important parts, as well as some of the finer details.
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BBR, the new kid on the TCP block
A look at Google's delay-controlled TCP flow control algorithm, called BBR.
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Learning to operate Kubernetes reliably
Online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for businesses of all sizes.
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I Broke Rust's Package Manager for Windows Users
Last weekend I was playing around with a way to represent null-terminated UTF8 strings in Rust. Rather than just toying with it forever, I decided ...
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Scaling your API with rate limiters
Online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for businesses of all sizes.
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Cooling the tube – Engineering heat out of the Underground
On a summer's day a trip in a hot tube train is a dreadful experience, but how did we end up with such hot tube trains, and what's being done about it?
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Exploiting the Wi-Fi Stack on Apple Devices
Posted by Gal Beniamini, Project ZeroIn this blog post we’ll complete our goal of achieving...
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Htop Explained Visually
htop is a great tool but lacks good documentation. This article takes a visual and simple approach to explaining htop.
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Toward a Reasonably Secure Laptop
It’s no secret that hardware selection is one of the biggest hurdles Qubes users face. Finding a computer that is secure, trustworthy, and compatible is more difficult than it should be. In an effort to address the compatibility aspect of that problem, we introduced the Qubes-certified ...
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MP3 for Image Compression (2006)
During some random discussion with my colleague today, I rediscovered an experiment I did quite some years ago: MP3 compression of image data. This is, feed raw 8-bit-per-pixel grayscale image data into an MP3 encoder, let it compress it, and decode the MP3 file again. After some conversion (the decoder will always…
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APFS is not safe to use with names which have Unicode normalisation issues
APFS is not currently safe to use with names which might have Unicode normalisation issues – which means it is only safe with a limited ASCII character set.
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How Discord Indexes Billions of Messages Using Elasticsearch
Discover the latest news and app updates, stories, company insights, and plenty more about Discord, all in one place.
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What’s New in Bash/WSL and Windows Console
When Windows 10 Anniversary Update (AU) was shipped, the Windows Subsystem for Linux (WSL) was still far from complete, and was known to have many
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Three Years on Google App Engine
For the last 3 years I worked on an application that runs on Google App Engine. It is a fascinating, unique piece of service Google is offering here. Unlike anything you’ll find elsewhere. This is my in-depth, personal take on it.
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The slow currentTimeMillis()
Today we’ll look at one of the most basic and the most often used methods from the Java library: System.currentTimeMillis() .
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PostgreSQL HA cluster failure: a post-mortem
Discover our incident review with our API and dashboard after the outage on 10th October.
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1.1B Taxi Rides on Kdb+/q and 4 Xeon Phi CPUs
Benchmarks & Tips for Big Data, Hadoop, AWS, Google Cloud, PostgreSQL, Spark, Python & More...
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Writing a Fast JSON Parser
Several holidays ago, I got a bee in my bonnet and wrote a fast JSON parser whose parsed AST fits in a single contiguous block of memory. The code was small and simple and the performance was generally on-par with RapidJSON, so I stopped and moved on with my life.
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Intern Impact: Brotli compression for Play Store app downloads
This month, the Google Play team in our London office was hyped to welcome back Anamaria Cotîrlea, a former intern who is now a full-time ...
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APFS does not normalize Unicode filenames
“iOS HFS Normalized UNICODE names, APFS now treats all files as a bag of bytes on iOS. We are requesting that Applications developers call the correct Normalization routines to make sure the file name contains the correct representation.”
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ZFS Is the Best Filesystem For Now
ZFS should have been great, but I kind of hate it: ZFS seems to be trapped in the past, before it was sidelined it as the cool storage project of choice; it's inflexible; it lacks modern flash integration; and it's not directly supported by most operating systems. But I put all my valuable data on ZFS because it…