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I/O Access Methods for Linux
Explore the four different ways to perform disk I/O on Linux and the tradeoffs and what we chose for ScyllaDB to build a high-performing database.
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Online migrations at scale
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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Better Random Number Generation for OpenSSL, Libc, and Linux Mainline
中文版 In 2015, AWS introduced s2n, a new open source implementation of the TLS/SSL protocols that protect the privacy and integrity of data moving over a network. s2n was designed to be secure, simple, small, and fast. The project is thriving, and we use it extensively. In February, our CISO Stephen Schmidt shared that…
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Running 10M PostgreSQL Indexes in Production
How Heap runs 10 million postgreSQL indexes in production.
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Exactly-once Semantics: How Kafka Does it
Exactly-once is a hard problem to solve, but we've done it. Available now in Apache Kafka 0.11, exactly-once semantics.
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Introducing the Keybase filesystem
Browse technical documentation on the public-key cryptography that powers Keybase. Learn how Keybase Chats, Files, Teams, and Git are secured.
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Linux tracing systems and how they fit together
Linux tracing systems & how they fit together
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Performance Improvements in .NET Core
Update (2017/06/12): Added BenchmarkDotNet blog post link. There are many exciting aspects to .NET Core (open source, cross platform, x-copy deployable, etc.) that have been covered in posts on this blog before. To me, though, one of the most exciting aspects of .NET Core is performance. There’s been a lot of…
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Rethinking the D-Bus Message Bus
Later this year, on November 21, 2017, D-Bus will see its 15th birthday. An impressive age, only shy of the KDE and GNOME projects, whose collaboration inspired the creation of this independent IPC system. While still relied upon by the most recent KDE and GNOME releases, D-Bus is not free of criticism. Despite its…
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64-bit Firefox is the new default on 64-bit Windows
Users on 64-bit Windows who download Firefox can get our 64-bit version by default. That means you get a more secure version of Firefox, one that also crashes a whole lot less . How much less? In our tests so far, 64-bit Firefox reduced crashes by 39% on machines with 4GB of RAM or more.
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Ubuntu on AWS Gets Serious Performance Boost with AWS-Tuned Kernel
Canonical and Amazon Web Services have been working closely together to create the best experience of the world’s most popular cloud OS, on the world’s most popular public cloud. Official Ubuntu guest images have been available on AWS for years, and underlie the majority of workloads on the service—whether you use the…
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Migrating 1200 databases from MySQL to Postgres
Once Upon a Time there was a company called Base7Booking that by the beginning of 2016 it was supporting around 1200 databases on MySQL 5...
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Better Compression with Zstandard
I think I first heard about the Zstandard compression algorithm at a Mercurial developer sprint in 2015. At one end of a large table a few people were uttering expletives out of sheer excitement. At developer gatherings, that's the universal signal for something is awesome . Long story short, a Facebook engineer…
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Where has my disk space gone? Flame graphs for file systems
Using the flame graph visualization to determine where file system or disk space is consumed, and answer where space has gone.
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Thread Pools in Nginx Boost Performance 9x (2015)
Deliver modern applications with NGINX. Explore high-performance load balancing, API gateways, and web server solutions trusted by top global enterprises.
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Hazelcast 3.8.3
2017-10-07: IMap is not the only datatype supporting merge: ICache is mergable as well.
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Serverless Raspberry Pi Cluster with Docker
Learn how to deploy Docker Swarm to create a Raspberry Pi cluster then turn it into a serverless super-computer with the OpenFaaS framework for Docker.
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What's the difference between the com and exe extensions? (2008)
Practical development throughout the evolution of Windows.
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How to write a simple operating system
This document shows you how to write and build your first operating system in x86 assembly language. It explains what you need, the fundamentals of the PC boot process and assembly language, and how to take it further. The resulting OS will be very small (fitting into a bootloader) and have very few features, but it's…
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Introduction to ARM Assembly Basics
Welcome to this tutorial series on ARM assembly basics. This is the preparation for the followup tutorial series on ARM exploit development . Before we can dive into creating ARM shellcode and build ROP chains, we need to cover some ARM Assembly basics first.
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We need to document macOS
macOS is now largely undocumented. It’s time to do the job ourselves: what about an open collaborative project?
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Why are all Windows drivers dated June 21, 2006?
Practical development throughout the evolution of Windows.
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The First PS4 Kernel Exploit: Adieu
Now we will step back a bit and explain how we managed to jump from the browser process into the kernel such that ps4-kexec et al. are usable.
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The TTY demystified (2008)
The TTY subsystem is central to the design of Linux, and UNIX in general. Unfortunately, its importance is often overlooked, and it is difficult to find good introductory articles about it. I believe that a basic understanding of TTYs in Linux is essential for the developer and the advanced user.