271
Replacing Protobuf with Rust
Forking pg_query.rs to replace Protobuf with bindgen-generated direct C-to-Rust struct mappings, yielding 5x faster query parsing and 10x faster deparsing in PgDog.
Topics /
Software Engineering
The most popular blog posts about software engineering on Hacker News. 455 posts.
272
Model Training as Code
Model training has grown complex enough to require many specialised stages and teams, and manual coordination between them doesn’t scale. At Aleph Alpha, we’ve built Savanna, a model factory that implements the entire training pipeline in code.
273
The agent harness belongs outside the sandbox
Two architectures for running agent harnesses, the tradeoffs between them, and how we make skills and memories work when the harness isn't local.
274
Crystal 1.22
We are announcing a new Crystal release 1.22.0 with several new features and bug fixes.
275
We Built a Video Rendering Engine by Lying to the Browser About What Time It Is
How Replit turns any web page into a deterministic video by virtualizing time itself, patching key browser audio APIs, and waging war against headless Chrome's quirks.
276
A brief history of Windows scroll bar shortcuts
Right-clicking and shift-clicking.
277
Grit: Rewriting Git in Rust with agents
We used agents to port all of Git to library-first, memory-safe Rust and it passes the entire C Git test suite.
278
Drawgent: Coding agent on a live Excalidraw canvas
Repository drawgent by yanndegat.tngl.sh on Tangled.
279
Sem: New primitive for code understanding – not LSPs, but entities on top of Git
Semantic understanding on top of Git. Diff, blame, impact, log. Functions, not lines.
280
Pyodide 314.0: Python packages can now publish WebAssembly wheels to PyPI
We are pleased to announce the Pyodide 314.0 release. This release focuses on standardization and packaging, marking a significant milestone in the Python-in-the-browser ecosystem. PEP 783 is Accepted: What Does It Mean? The acceptance of PEP 783: Emscripten packaging marks perhaps the most exciting change in the…
281
Protobuf has LSP support
Buf is proud to announce the first fully-featured, spec-compliant LSP server for Protobuf. The Language Server Protocol is the standard API for integrating language support into your favorite IDE or text editor, such as VSCode, IntelliJ, or Neovim. An LSP server provides the smarts that power go to definition, code…
282
Making geo joins faster with H3 indexes
Using H3 indexes to greatly speed up geospatial SQL Queries. Orders of magnitude improvements can be gained with the right data structures
283
Edge.js: Run Node apps inside a WebAssembly sandbox
Today we are incredibly excited to open source [Edge\.js](<https://edgejs.org/>), a JavaScript runtime specifically designed to safely run Node.js workl...
284
Fixing Tool-Call Accuracy in vLLM
Tool call accuracy is an important part of serving open-weight AI models. When your tool calls aren’t accurate, the model builds up on nonsensical context. We’ve been carrying our own fork of vLLM to hit 100% in tool call schema accuracy with Kimi and DeepSeek. Fortunately, vLLM 0.31 added support for constrained…
285
People of ACM – Russ Cox
Russ Cox is a Distinguished Engineer at Google. He was a leading figure in the development of the Go programming language and environment working with co-creators Robert Griesemer, Rob Pike, and Ken Thompson, and serving as technical lead for over a decade. Before Go, he created Google Code Search, which provided…
286
Electrobun v1: Build fast, tiny, and cross-platform desktop apps with TypeScript
Two years in the making: Electrobun hits v1 with first-class macOS, Windows, and Ubuntu builds, tiny differential updates, and a framework that finally feels built for modern desktop apps.
287
How we made a text-to-speech model respond in sub-50 ms
10 RPS with p95 TTFA under 50 ms on a single H100: how we optimized Qwen3-TTS serving.
288
Servo 2025 Stats
Some numbers about the evolution of the Servo project and its community during the last years.
289
Footguns with Postgres “at time zone 'UTC'”
And why you may need to repeat AT TIME ZONE 'UTC' twice. SUMMARY * AT TIME ZONE 'UTC' converts the data type from timestamptz to timestamp (example). * Now you are inadvertently using the timestamp without time zone (aka timestamp) data type, which is markedly discouraged. * There are tons of footguns with timestamp…
290
Design and Implementation of Sprites
So that we may educate as well as horrify: the internals of our new Sprites execution platform.
291
Using any C++ library in Godot
How Godot's GDExtension system and the godot-cpp bindings work, and how to use Conan to bring C and C++ libraries into a Godot game, with a flecs example that simulates 100,000 particles.
292
Are you expected to run five Python type-checkers now?
Library maintainers may feel overwhelmed by the plurality of type checkers that exist. We offer some guidance on how to focus their efforts where they matter most.
293
OCaml Onboarding: Introduction to the Dune build system
Welcome to all Camleers We are back with another practical walkthrough for the newcomers of the OCaml ecosystem. We understand from the feedback we have gathered over the years that getting started with the OCaml Distribution can sometimes be perceived as challenging at first. That's why we keep it ...
294
GPT-5.6 Luna vs. GPT-6 Astra: Is a $1.20 Model Good Enough for Code Review?
Run a cheap model on every PR and escalate to a stronger one: on 50 PRs it found 120 verified bugs for $4.13 versus 108 for GPT-5.6 Sol alone.
295
Factorio 2.1 Experimental Release
Hello, we hope your week has been pleasant.
296
Index, Count, Offset, Size
Wherein we make progress towards solving one of the most vexing problems of Computer Science — naming things.
297
Are arrays functions?
A high-performance and high-level purely functional data-parallel array programming language that can execute on the GPU and CPU.
298
There is more to code review than (automatable) detection
The abstract for article “ The End of Code Review: Coding Agents Supersede Human Inspection ” paints this picture for the reader…
299
Video Encoding and Decoding with Vulkan Compute Shaders in FFmpeg
In this blog we explore how FFmpeg uses Vulkan Compute to seamlessly accelerate encoding and decoding of even professional-grade video on consumer GPUs — unlocking GPU compute parallelism at scale, without specialized hardware. This approach complements Vulkan Video's fixed-function codec support, extending…
300
DuckDB 1.5.2 – SQL database that runs on laptop, server, in the browser
We are releasing DuckDB version 1.5.2, a patch release with bugfixes, performance improvements, and support for the DuckLake 1.0 lakehouse format.