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How to get transactions between almost any data stores
How to get ACID transactions between almost any data stores, with the Epoxy protocol.
Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 6,942 posts.
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ZeroMQ is just sockets
Kim: Yeah, right. It's just sockets . Course, it's totally portable so you don't have to handle all the weird stuff different operating systems ask you to do.
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3600 MHz Raspberry Pi 5 with Liquid Nitrogen
I tried everything but couldn’t turn this Raspberry Pi 5 into the World’s Fastest Pi 5. Unfortunately, we can’t quite claim that title.
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Run your own high-end cloud gaming service on EC2
NOTE: This article has been superseded by my more recent one here
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A Unix Utility You Should Know About: Pipe Viewer
Hi all! I'm starting a new article series here. This one is going to be about Unix utilities that you should know about. The articles will discuss one Unix program at a time. I'll try to write a good introduction to the tool and give as many examples as I can think of. The first post in this series is going to be…
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Pushing Nginx to its limit with Lua
At CloudFlare, Nginx is at the core of what we do. It is part of the underlying foundation of our reverse proxy service. In addition to the built-in Nginx functionalities, we use an array of custom C modules...
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Let's Build an MP3 Decoder
Even though MP3 is probably the single most well known file format and codec on Earth, it’s not very well understood by most programmers – for many encoders/decoders is in the class of software “other people” write, like standard libraries or operating system kernels. This article will attempt to demystify the…
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SeL4 security proofs now complete on AArch64
Proofcraft’s Chief Engineer Rafal Kolanski has completed a major “architecture split” overhaul of the seL4 proofs, resulting in the removal of 250k lines of proof and strengthening the link between proofs on different architectures. These changes will significantly reduce future effort required to maintain and extend…
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Continental Europe successfully synced with Ukraine and Moldova power systems
Following an urgent request by Ukrenergo and Moldova for emergency synchronisation, the TSOs of Continental Europe agreed to start on 16 March 2022 the trial synchronisation of the Continental European Power System with the power systems of Ukraine and Moldova. This acceleration of the synchronisation project ongoing…
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The Wendelstein 7-X concept proves its efficiency
One of the most important optimisation goals underlying the Wendelstein 7-X fusion device at Max Planck Institute for Plasma Physics in Greifswald has now been confirmed. An analysis by IPP scientists in the journal Nature shows: In the optimised magnetic field cage, the energy losses of the plasma are reduced in the…
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Linux Container Internals
This post was the basis for a joint event with the grokking engineering community in Saigon.
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Writing a RISC-V OS in Rust: System Calls
System calls are a way for unprivileged, user applications to request services from the kernel. In the RISC-V architecture, we invoke the call using the ecall instruction. This will cause the CPU to halt what it's doing, elevate privilege modes, and then jump to whatever function handler is stored in the mtvec…
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Network Transparency with Wayland
M. Stoeckl's website
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Some Reasons to Measure
A question I get asked with some frequency is: why bother measuring X, why not build something instead? More bluntly, in a recent conversation with a newsletter author, his comment on some future measurement projects I wanted to do (in the same vein as other projects like keyboard vs. mouse , keyboard , terminal and…
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Dumping a PS4 Kernel in “Only” 6 Days
What if a secure device had an attacker-viewable crashdump format? What if that same device allowed putting arbitrary memory into the crashdump? Amazingly, the ps4 tempted fate by supporting both of these features! Let’s see how that turned out…
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Why Rust for Low-Level Linux Programming?
I think Rust is extremely well-suited for low level Linux systems userspace programming — daemons, services, command-line tools, that sort of thing. Low-level userspace code on Linux is almos…
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External boot disks still don’t work properly with M1 Macs
Making an external bootable SSD for an M1 Mac has proved tricky. Has this changed in macOS 11.2? If you’ve already got 11.1 running on one, how do you update it to 11.2?
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Testing the Windows Subsystem for Linux
Access to this page requires authorization. You can try signing in or changing directories .
2754
In S3 simplicity is table stakes
From simple object storage to sophisticated table management, builders have always shaped S3's evolution. Andy Warfield discusses why making complex systems simple remains our north star at AWS.
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The Rust compiler has gotten faster again
I worked on Rust part-time for several years at Mozilla. During that period I regularly summarized how the compiler’s performance had improved. For example: 2017-11-12 to 2019-07-24.
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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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Blending complex systems made my latency 10x higher
Every time someone reports higher latency after migrating to Kubernetes, the root cause is an assumption that changed. This is one of those stories.
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We halved DNS build delay and cut memory use by 85%
Zone setting changes used to rebuild entire DNS zones, even ones with tens of millions of records. Here is how we built a planner that picks the smallest safe build, cutting full builds by 40%, peak memory by 85%, and halving build delay.