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We Replaced an SSD with Storage Class Memory
MongoDB's blog includes technical tutorials, MongoDB best practices, customer stories, and industry news related to the leading non-relational database.
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The latest blog posts to take off on Hacker News. 533 posts.
182
Don't trust default timeouts
Modern applications don’t crash; they hang. One of the main reasons for it is the assumption that the network is reliable. It isn’t. When you make a network call without setting a timeout, you are telling your code that you are 100% confident that the call is going to succeed. Would you really take that bet? If you…
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What Shell Am I Using?
I wanted to install the latest version of zsh on my MacBook Pro. This is usually the first thing I install when setting up a new machine. A brew install zsh and a chsh later and I'm good to go (well, technically I had to add the homebrew location of zsh to /etc/shells as well). Close out Terminal.app and reopen to…
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Netflix is now doing per-shot encoding for UHD content
by Aditya Mavlankar, Liwei Guo, Anush Moorthy and Anne Aaron
185
Shrinking a Kotlin Binary by 99.2%
We'll get to the shrinking, but first let's motivate the binary in question. Three years ago I wrote the "Surfacing Hidden Change to Pull Requests" post which covered pushing important stats and diffs into PRs as a comment. This avoids surprises with changes that affect binary size, manifests, and dependency trees.
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A log/event processing pipeline you can't have (2019)
Let me tell you about the still-not-defunct real-time log processing pipeline we built at my now-defunct last job. It handled logs from a la...
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Chrome just got faster with Profile Guided Optimization
From the very beginning , we built Chrome to be the fastest browser possible. The faster Chrome is, the faster you find the information you ...
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A tale of webpage speed, or throwing away React
Back in 2011, I happened to get a job writing Backbone.js app. If you never did that, don’t. I was complaining about difficulties with composition left and right to [...]
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Btrfs Coming to Fedora 33
The default filesystem will be BTRFS for Fedora 33 and onwards. Read more here about what that means for the Fedora community.
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Building resilient services at Prime Video with chaos engineering
Large-scale distributed software systems are composed of several individual sub-systems—such as CDNs, load balancers, and databases—and their interactions. These interactions sometimes have unpredictable outcomes caused by unforeseen turbulent events (for example, a network failure). These events can lead to…
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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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Ice Lake AVX-512 Downclocking
Examining the extent of AVX related downclocking on Intel’s Ice Lake CPU
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An Introduction to OpenBSD [video]
A talk on OpenBSD for beginners
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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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Can we do better than our C compiler?
Today, I wanted to see if I could out-compile my C compiler. I added a hand-compiled assembly version of echo from our previous coding exercise and added a new make target, make asm , that will assemble it. Let's look at our hand-compiled assembly and compare it to our C compiler and ask whether or not it was worth it.
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QEMU should move from C to Rust
Welcome Redditors and HackerNews folks! This post is getting attention outside the QEMU community, so I'd like to highlight two things that...
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Let's Build a 28-Core Raspberry Pi Cluster
I built a 28-core gigabit cluster, Kraken, consisting of 7 Raspberry Pi 3 Model Bs.
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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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SMT Solving on an iPhone (2018)
Why buy an expensive desktop computer when your iPhone is a faster SMT solver?
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Where do argc and argv come from?
Continuing on from our tiny snake game , let's explore more into how binaries work on Unix. Let's figure out how our programs come to obtain their argc and argv parameters.
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What Is the Minimal Set of Optimizations Needed for Zero-Cost Abstraction?
Robert O'Callahan. Christian. Kiwi. Software guy. All content human-authored unless otherwise noted.
207
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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The Day The Standard Library Died
In Prague, the C++ committee took a series of polls on whether to break ABI, and decided not to. There was no applause. But I’m not sure we fully understood what we did and the consequences it could have.
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Low latency tuning guide
This guide describes how to tune your AMD64/x86_64 hardware and Linux system for running real-time or low latency workloads.