How uv got so fast
uv installs packages faster than pip by an order of magnitude. The usual explanation is “it’s written in Rust.” That’s true, but it doesn’t explain much. Plenty of tools are written in Rust without being notably fast. The interesting question is what design decisions made the difference. Charlie Marsh’s Jane Street talk and a Xebia engineering deep-dive cover the technical details well. The intere
A Guide to Claude Code 2.0 and getting better at using coding agents
Table of Contents Intro Why I wrote this post The Map is not the territory This post will help you keep up in general Lore time - My Love and Hate relationship with Anthropic Timeline My Codex era Anthropic Redemption Arc + Regaining mandate of heaven Why Opus 4.5 feels goooood This post is not sponsored Pointers for the technically-lite The Evolution of Claude Code Quality of life improvements in
tl;dr In our continued efforts to expand and improve your profiling experience, we are excited to announce new additions to our language support: Ruby and Python. All the features that are described in this blog post have recently been released as part v0.26.0 of Parca Agent. ~~While currently these language supports are in beta, they can be enabled using the --enable-ruby-unwinding and --enable-p
CUPID: for joyful coding
What started as lighthearted iconoclasm, poking at the bear of SOLID, has developed into something more concrete and tangible. If I do not think the SOLID principles are useful these days, then what would I replace them with? Can any set of principles hold for all software? What do we even mean by principles? I believe that there are properties or characteristics of software that make it a joy to
👋 This page was last updated ~4 years ago. Just so you know. In the two years since I’ve posted I want off Mr Golang’s Wild Ride, it’s made the rounds time and time again, on Reddit, on Lobste.rs, on HackerNews, and elsewhere. And every time, it elicits the same responses: You talk about Windows: that’s not what Go is good at! (Also, who cares?) This is very one-sided: you’re not talking about th
Linux Page Cache for SRE
More recent series: 1. Async Rust & Tokio I/O Streams: Backpressure, Concurrency, and Ergonomics new 2. Resolvers and Dual-Stack applications 3. Linux Page Cache mini book 4. File descriptors, pipes, terminals, user sessions, process groups and daemons SRE deep dive into Linux Page Cache # Last updated: Oct 2025 Contents Prepare environment for experiments Essential Page Cache theory Page Cache an
I first learned Kubernetes ("k8s" for short) in 2018, when my manager sat me down and said "Cloudflare is migrating to Kubernetes, and you're handling our team's migration." This was slightly terrifying to me, because I was a good programmer and a mediocre engineer. I knew how to write code, but I didn't know how to deploy it, or monitor it in production. My computer science degree had taught me a
PythonのPackage Managerを深く知るためのリンク集.md PythonのPackage Managerを深く知るためのリンク集 以下の発表(2023/10/12)につき作成した、Pythonのパッケージ管理について学ぶ上で有益なリンクを集めたもの。 stapy#98イベントリンク 登壇時の資料(SpeakerDeck) 登壇Archive動画 Pythonでの開発に関するベストプラクティス等を知ることは目的にしていない。 Package Managerを自作したり、開発にコミットするために必要なベースの知識を補うリンク集。 誤字脱字、用語不統一、勘違いはごめんなさい。 他言語でも、現代Package Managerでこれは必要だとかこれは読んでおくべきだというのがあれば教えて下さい。 ToC Donation 全体感がわかるもの Package Manager Libra
Scaling DynamoDB: How partitions, hot keys, and split for heat impact performance (Part 1: Loading) | Amazon Web Services
AWS Database Blog Scaling DynamoDB: How partitions, hot keys, and split for heat impact performance (Part 1: Loading) The general rule with Amazon DynamoDB is to choose a high cardinality partition key. But why; and what happens if you don’t? Inspired by a customer use case, we dive deep into this question and explore the performance of loading and querying DynamoDB using different partition key d
GNU Toolchain GCC - The GNU Compiler Collection (Git) GDB - The GNU Project Debugger (Git) Binutils - The GNU Binary Utilities (Git) LLVM Toolchain LLVM - The LLVM Compiler Infrastructure (Git) LLDB - The LLDB Debugger Clang - C language family frontend for LLVM LLD - The LLVM Linker GNU Toolchain Resources Binutils Porting Guide To A New Target/Processor Architecture How To Retarget the GNU Toolc
What every SRE should know about GNU/Linux resolvers and Dual-Stack applications
More post series:1. File descriptors, pipes, terminals, user sessions, process groups and daemons2. Linux Page Cache mini book3. Resolvers and Dual-Stack applications new What every SRE should know about GNU/Linux resolvers and Dual-Stack applications #In this series of posts, I’d like to make a deep dive into the GNU/Linux local facilities used to convert a domain name or hostname into IP address
I started using uv because the benchmarks seemed too good to be true—10–100x faster than pip, resolves and installs in milliseconds. After reading the source code and the official resolver internals documentation, I understand why, and the answers are more interesting than just "it's written in Rust." This post traces every layer: from the repository structure, through what literally happens when
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Profiling Python and Ruby using eBPF
Lies we tell ourselves to keep using Golang
Solving common problems with Kubernetes
PythonのPackage Managerを深く知るためのリンク集
Toolchains.net - Compiler toolchains resources
How uv Works Under the Hood | Noos - Where Thought, Code, and Craft Converge