151
A Postmark backdoor that’s downloading emails
Secure the modern software stack with Koi. Gain visibility, context, and real-time protection over extensions, MCPs, and autonomous AI agent endpoints.
Topics /
Software Engineering
The most popular blog posts about software engineering on Hacker News. 488 posts.
152
Embedding Python in Elixir, it's fine
Introducing Python interpreter embedded in Elixir and a Fine way to write your NIFs.
153
20 years of Git
Twenty years ago, Git was born. How did this unlikely "information manager" take over the world?
154
Prompt caching for cheaper LLM tokens
A far more detailed explanation of prompt caching than anyone asked for: how tokens, embeddings, and attention make cached LLM tokens 10x cheaper and faster.
155
Vanilla JavaScript support for Tailwind Plus
Every UI block in Tailwind Plus is now fully functional, accessible, and interactive, even if you don't use a framework like React or Vue.
156
Skills Officially Comes to Codex
Give ChatGPT and Codex new capabilities and expertise
157
AI is forcing us to write good code
When Best Practices Are Best
158
Good-bye core types; Hello Go as we know and love it
Go 1.25 simplifies the language spec by removing the notion of core types
159
Tidewave Web: in-browser coding agent for Rails and Phoenix
Today, we're introducing Tidewave Web for Rails and Phoenix: a coding agent that runs directly in the browser alongside your web application, in your own development environment, with full page and code context.
160
Writing a Rust GPU kernel driver: a brief introduction on how GPU drivers work
See how GPU drivers work thanks to VkCube in this Rust-based series for the development of Tyr.
161
Why Algebraic Effects?
Algebraic effects 1 (a.k.a. effect handlers) are a very useful up-and-coming feature that I personally think will see a huge surge in popularity in the programming languages of tomorrow. They’re one of the core features of Ante, as well as being the focus of many research languages including Koka , Effekt , Eff , and…
162
Going down the rabbit hole of Git's new bundle-URI
Git's new bundle-uri could help significantly speed up clones, but what bugs lurk within?
163
Astro is a return to the fundamentals of the web
Why Astro is perfect for content-driven sites: island architecture, zero JS by default, and blazing-fast performance.
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165
The first year of free-threaded Python
A recap of the first year of work on enabling support for the free-threaded build of CPython in community packages.
166
D2: Diagram Scripting Language
D2 is a diagram scripting language that turns text to diagrams. It stands for
167
Self-hosted x86 back end is now default in debug mode
This page contains entries for the year 2025 . Other years are available in the Devlog archive page .
168
Unison 1.0
After years of engineering, design, and community collaboration, we're excited to release Unison 1.0. This version delivers a refined programming workflow and a mature toolchain. Join us as we celebrate this milestone and look ahead to the future of Unison.
169
Jank is C++
jank is Clojure. jank is C++. The combination is amazing.
170
Running Qwen3 on your macbook, using MLX, to vibe code for free
Localforge blog post
171
Minding the gaps: A new way to draw separators in CSS
Drawing separator lines between various sections of a webpage is a common design technique, which can help to structure the content and make it more readable, as well as more aesthetically pleasing. As we'll see in this article, there are techniques
172
How Anthropic teams use Claude Code
Teams across Anthropic use Claude Code for everything from debugging production issues and navigating unfamiliar codebases to building custom automation tools. Here's how.
173
io_uring is faster than mmap
Sourcing data directly from disk IS faster than caching in memory. I brought receipts. Because hardware got wider but not faster, the old methods don't get you there. You need new tools to use what is scaling and avoid what isn't.
174
Typst 0.13 is out now
With Typst 0.13, we wanted to improve the day-to-day experience of using Typst. We fixed some of the most long-standing bugs and made Typst even more flexible to...
175
"Vibe code hell" has replaced "tutorial hell" in coding education
When I started thinking about the problems with coding education in 2019, "tutorial hell" was enemy number one. You'd know you were living in it if you:
176
Exploring PostgreSQL 18's new UUIDv7 support
Exploring what's interesting about UUIDv7 support using a demo crab store.
177
Why Twilio Segment moved from microservices back to a monolith
Discover Twilio’s shift to a single powerful service! Learn cloud communication trends, customer success stories, and how to build scalable apps. Join now!
178
Bun 1.2 Is Released
Built-in Postgres client with Bun.sql, built-in S3 object support with Bun.s3, a new text-based lockfile: bun.lock, Express is 3x faster, and a major update on Node.js compatibility.
179
Graphite is joining Cursor
Graphite has entered into a definitive agreement to be acquired by Cursor.
180
Open-sourcing OpenPubkey SSH (OPKSSH): integrating single sign-on with SSH
OPKSSH (OpenPubkey SSH) is now open-sourced as part of the OpenPubkey project. This enables users and organizations to configure SSH to work with single sign-on technologies like OpenID Connect, removing the need to manually manage & configure SSH keys without adding a trusted party other than your IdP.