31
Building columnar compression in a row-oriented database
Read how we built a flexible, high-performance columnar compression mechanism for PostgreSQL to add scalability to our favorite database.
Most cited
Posts that commenters keep linking to, ranked by how many different people have cited them in Hacker News comments. 112 posts.
32
33
Lucet: Native WebAssembly Compiler and Runtime
Today, we're thrilled to announce the open sourcing of Lucet, our native WebAssembly compiler and runtime. WebAssembly is a technology created to enable web browsers to safely execute programs at near-native speeds, and it's been shipping in the four major browsers since early 2017.
34
Composable multi-threaded parallelism in Julia
Software performance depends more and more on exploiting multiple processor cores....
35
Mail Data Loss in macOS 10.15
I’m working on more posts about the Catalina release, but I wanted to start with a short warning. I’ve heard a bunch of reports of data loss in Apple Mail. Thankfully, none seem to be caused by my apps . (Ironically, one of the bugs I’ve encountered is the inability to delete messages via AppleScript.) And, in fact…
36
Why Does Windows Really Use Backslash as Path Separator?
More or less anyone using modern PCs has to wonder: Why does Windows use backslash as a path separator when the rest of the world uses forward slash? The clear intermediate answer is “because DOS and OS/2 used backslash”. Both Windows 9x and NT were directly or indirectly derived from DOS and OS/2, and certainly…
37
Translating an ARM iOS App to Intel macOS Using Bitcode
When Apple introduced Bitcode and made it mandatory on watchOS and tvOS, they kinda hand-waved away questions about why it existed, with nebulous claims about it being useful to tune-up binaries by utilizing the latest compiler improvements.
38
FreeBSD – A lesson in poor defaults
This page lists some of the changes I make to a vanilla install of FreeBSD for security hardening. Some changes to increase network performance or make things a bit more sane are also included. It only covers basic changes that a sysadmin can make to a running system.
39
The cost of parsing JSON
The dominant costs of processing JavaScript are download and CPU execution time.
40
O(n^2), again, now in Windows Management Instrumentation
I recently hit some multi-minute delays on my workstation. After investigating I found that the problem was due to a lock being held for five minutes, and during that time the lock-holder was mostl…
41
The Fully Remote Attack Surface of the iPhone
Posted by Natalie Silvanovich, Project ZeroWhile there have been several rumours and reports of f...
42
V8: A Year with Spectre
The V8 team details their analysis and mitigation strategy for Spectre, one of the top computer security issues of 2018.
43
What is Silverblue?
You may have heard about Fedora Silverblue, the next-generation desktop OS. This article gives you a more complete view about what it is and how it works.
44
Introducing Windows Terminal
We are beyond excited to announce Windows Terminal! Windows Terminal is a new, modern, fast, efficient, powerful, and productive terminal application for
45
Fast and flexible observability with canonical log lines
Canonical log lines are a lightweight, flexible, and technology-agnostic technique for observability that are powerful and easy to implement.
46
63 Cores Blocked by Seven Instructions
I seem to have a habit of writing about super powerful machines whose many cores are laid low by misuse of locks. So. Yeah. It’s that again. But this one seems particularly impressive. I mean, how …
47
Google Chrome Keystone is modifying /var symlink on non SIP Macs causing k-panic
Reports that some AVID Users Macs would no longer boot. It now may be that a Google Chrome Keystone update modifies /var on NON SIP Protected Macs.
48
exFAT in the Linux kernel
We’re pleased to announce that Microsoft is supporting the addition of Microsoft’s exFAT technology to the Linux kernel.
49
Using Rust to Scale Elixir for 11M Concurrent Users
Discover the latest news and app updates, stories, company insights, and plenty more about Discord, all in one place.
50
51
Shared Cache Is Going Away
Browsers historically have had a single HTTP Cache. This meant that if www.a.example and www.b.example both used cdn.example/jquery-1.2.1.js then JQuery would only be downloaded once. Since it's the same resource regardless of which site initiates the download, a single shared cache is more efficient. [1]…
52
Cloudflare outage caused by bad software deploy
Starting at 1342 UTC today we experienced a global outage across our network that resulted in visitors to Cloudflare-proxied domains being shown 502 errors (“Bad Gateway”). The cause of this outage was deployment of a single misconfigured rule within the Cloudflare Web Application Firewall (WAF)
53
Fsyncgate: Errors on fsync are unrecoverable (2018)
This is an archive of the original "fsyncgate" email thread. This is posted here because I wanted to have a link that would fit on a slide for a talk on file safety with a mobile-friendly non-bloated format .
54
Why We Love QUIC and HTTP/3
We're thrilled to be so invested in QUIC, a new transport protocol that is more responsive, secure, and flexible than what the internet uses today. Learn why, straight from our very own Jana Iyengar, one of the editors of the core document.
55
Not So Fast: Analyzing the Performance of WebAssembly vs. Native Code
Abhinav Jangda, Bobby Powers, Emery D. Berger, and Arjun Guha, University of Massachusetts Amherst
56
AWS Nitro System
At Tuesday Night Live with James Hamilton at the 2016 AWS re:Invent conference, I introduced the first Amazon Web Services custom silicon. The ASIC I showed formed the foundational core of our second generation custom network interface controllers and, even back in 2016, there was at least one of these ASICs going…
57
58
59
Malloc Never Fails (2012)
Here’s a fun bit of trivia: malloc on Linux never fails [due to the obvious cause]. In this post, we’ll show that this indeed is the case, and explore why…
60
The Definitive Guide on Win32 to NT Path Conversion (2016)
Posted by James Forshaw, path’ological reverse engineer.How the Win32 APIs process file pat...