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How Shopify reduced storefront response times with a rewrite
We rewrote critical software that powers all online storefronts on Shopify, offering the fastest online shopping experience, entirely from scratch and without downtime.
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The latest blog posts to take off on Hacker News. 2,560 posts.
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How the ARM32 Linux kernel decompresses
ARM traditionally uses compressed kernels. This is done for two major reasons: It saves space on the flash memory or other storage media...
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A look back at memory models in 16-bit MS-DOS
Ways of dealing with the fractured address space.
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On the Performance of User-Mode Threads and Coroutines
Discussions of coroutines and user-mode threads — like Project Loom's virtual threads or Go's goroutines — frequently turn to the subject of performance. The question I'll try answering here is, how do user-mode threads offer better application performance than OS threads?
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Sandboxing and workload isolation
Documentation and guides from the team at Fly.io.
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Mitigating Spectre and Other Security Threats: The Cloudflare Workers Security Model
Cloudflare is a security company, and the heart of Workers is, in my view, a security project. Running code written by third parties is always a scary proposition, and the primary concern of the Workers team is to make that safe.
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Speculation in JavaScriptCore
This post is all about speculative compilation, or just speculation for short, in the context of the JavaScriptCore virtual machine.
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ListenBrainz moves to TimescaleDB
The ListenBrainz team has been working hard on moving our primary listen store from InfluxDB to TimescaleDB , and today at UTC 16:00 we’re going to make the switch.
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Safely Reviving Shared Memory
At Mozilla, we want the web to be capable of running high-performance applications so that users and content authors can choose the safety, agency, and openness of the web platform. ...
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Cloudflare outage on July 17, 2020
Today a configuration error in our backbone network caused an outage for Internet properties and Cloudflare services that lasted 27 minutes. We saw traffic drop by about 50% across our network.
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Performance Improvements in .NET 5
Explore many performance improvements, big and small, that have gone into the .NET 5 runtime and core libraries to make apps and services leaner and faster.
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Confidential VMs
Google Cloud will now offer the ability to encrypt data in use, while it’s being processed in a Google data center
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How to unc0ver a 0-day in 4 hours or less
By Brandon Azad, Project ZeroAt 3 PM PDT on May 23, 2020, the unc0ver jailbreak was released for ...
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A terrible, horrible, no-good, very bad day at Slack
This story describes the technical details of the problems that caused the Slack downtime on May 12th, 2020. To learn more about the process behind incident response for same outage, read Ryan Katkov’s post, “All Hands on Deck”. On May 12, 2020, Slack had our first significant outage in a long time. We published a…
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A crash course in just-in-time compilers (2017)
This is the second part in a series on WebAssembly and what makes it fast. If you haven’t read the others, we recommend starting from the beginning. JavaScript started out ...
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System Hardening in Android 11
Posted by Platform Hardening Team In Android 11 we continue to increase the security of the Android platform. We have moved to safer def...
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Guide to Linux System Calls (2016)
This complete guide explains all about Linux system calls with sample codes and results.
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Microsoft Defender ATP for Linux is now generally available
Today we are excited to announce general availability of Microsoft Defender Advanced Threat Protection (ATP) for Linux! - This initial release delivers...
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Jepsen: Redis-Raft 1b3fbf6
Redis is a fast single-threaded data structure server, commonly used as a cache, scratchpad, queue, or coordination mechanism between distributed applications. It offers operations over a broad array of datatypes , including binary blobs, lists, sets, sorted sets, maps, geohashes, counters, channels, streams, and…
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A Technology Preview of Nginx Support for QUIC and HTTP/3
We announce the technology preview of NGINX support for QUIC+HTTP/3 as pre-release software, available for interoperability testing, feedback, and code contributions. HTTP/3 replaces TCP with QUIC, which is designed to support multiplexed connections more reliably.
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FF Sandbox Escape
By James Forshaw, Project ZeroIn my previous blog post I discussed an issue with the Windows Kern...
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CUDA on Windows Subsystem for Linux 2
In response to popular demand, Microsoft announced a new feature of the Windows Subsystem for Linux 2 (WSL 2)—GPU acceleration—at the Build conference in May 2020. This feature opens the gate for many…
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Why is there a “V” in SIGSEGV Segmentation Fault?
My program received a SIGSEGV signal and crashed with "Segmentation Fault" message. Where does the "V" come from? Did I read it wrong? Was there a "Segmentation *V*ault?"? Or did Linux authors make a mistake? Shouldn't the signal be named SIGSEGF?
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