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Optimizing Your Web App 100x Is Like Adding 99 Servers
A lot of tech discussion these days is focused around scaling infrastructures to handle huge traffic. But it's important not to forget how far simple optimizations can go.
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The latest blog posts to take off on Hacker News. 533 posts.
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Developing Wayland Color Management and High Dynamic Range
Wayland is still lacking proper consideration for color management & support for high dynamic range (HDR) imagery. However, a group of renegade devs has begun an effort to fix this situation.
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Windows Subsystem for Linux: The lost potential
If you have followed Windows 10 at all during the last few years, you know that the Windows Subsystem for Linux, or WSL for short, is the hot topic among developers. You can finally run your Linux tooling on Windows as a first class citizen, which means you no longer have to learn PowerShell or, god forbid, suffer…
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My First Kernel Module: A Debugging Nightmare
This is the story of the time I wrote some code, deployed it to production, and ended up bricking the server it was running on by frying the kernel. Beautiful rendition of me frying the kernel This post is about perils of concurrency and...
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Achieving 100Gbps intrusion prevention on a single server
Achieving 100 Gbps intrusion prevention on a single server, Zhao et al., OSDI’20 Papers-we-love is hosting a mini-event this Wednesday (18th) where I’ll be leading a panel discussion including one …
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Simulating RAM in Clojure
“Computers are all made out of logic gates”. We’ve heard that saying before. We also have a sense that logic gates are very simple machines, analogous to light switches even. This raises the question: how exactly do kind-of-light-switches come together to form computers ? How does “storing a variable” or “calling a…
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Booting a macOS Apple Silicon Kernel in QEMU
I booted the arm64e kernel of macOS 11.0.1 beta 1 kernel in QEMU up to launchd. It’s completely useless, but may be interesting if you’re wondering how an Apple Silicon Mac will boot.
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Using Rust to Scale Elixir for 11M Concurrent Users (2019)
Discover the latest news and app updates, stories, company insights, and plenty more about Discord, all in one place.
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Analyzing the Limits of Connection Scalability in Postgres
Why it’s important to improve Postgres connection scalability, plus an analysis on the limits of connection scalability today.
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OpenBSD Router Guide
NOTE: Currently this guide only deals with IPv4 as most people still don't use IPv6 and many ISPs also still only use IPv4, but IPv6 is planned for a future update of the guide.
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A Linux sysadmin's introduction to cgroups
So you've heard of this thing called cgroups, and you are interested in finding out more. Perhaps you caught mention of it while listening to a talk abou...
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Two Workers Are Quadratically Better Than One
For latency, anyway. A common architecture pattern is the “task queue”: tasks enter an ordered queue, workers pop tasks and process them. This pattern is used everywhere from distributed systems to thread pools. It applies just as well to human systems, like waiting in line at a supermarket or a bank. Task queues are…
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Amazon Launches New RabbitMQ Message Broker Service
In 2017, we launched Amazon MQ – a managed message broker service for Apache ActiveMQ, a popular open-source message broker that is fast and feature-rich. It offers queues and topics, durable and non-durable subscriptions, push-based and poll-based messaging, and filtering. With Amazon MQ, we have enhanced lots of new…
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Notes on Paxos
These are my notes after learning the Paxos algorithm. The primary goal here is to sharpen my own understanding of the algorithm, but maybe someone will find this explanation of Paxos useful! This post assumes fluency with mathematical notation.
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Scipio: A Thread-per-Core Crate for Rust and Linux
Glommio (pronounced glom-io or |glomjəʊ|) is a cooperative thread-per-core crate for Rust & Linux based on io_uring. It allows you to write asynchronous code that takes advantage of rust async/await, but it doesn’t use helper threads anywhere.
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Keeping Netflix Reliable Using Prioritized Load Shedding
How viewers are able to watch their favorite show on Netflix while the infrastructure self-recovers from a system failure
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Moving BBC Online to the Cloud
The story of how the BBC website has been completely rebuilt and moved from datacentres to the cloud.
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Raspberry Pi 400 teardown and review
Today Raspberry Pi Trading announced the Raspberry Pi 400, the latest in the series of small education-focused computers that started with the original Raspberry Pi in 2012. For years, people have come up with creative ways to hack a Pi into keyboards, like the Original Pi in an old Mitsumi keyboard, or the Pi 3 A+ in…
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File Descriptor Transfer over Unix Domain Sockets
Yesterday, I read a phenomenal paper on how disruption free release at Facebook.
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Microservices – architecture nihilism in minimalism's clothes
Some recent backtracking from what we have been calling "Microservices" has sparked anew the debate around that software architecture pattern. It turns out that for increasingly more software people, …
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