Public list by ~betterdevlink

Issues #291 Jul 20, 2026

mirrord: give AI coding agents real-world context so they write working code

https://www.vpdae.com/redirect/h427una93hb2dlis5f4iolk2rwk

mirrord: give AI coding agents real-world context so they write working code AI agents write code fast, but they're working blind. They never see real API responses, real database state, or real queue payloads, so bugs surface only after the fact. mirrord connects your AI agents to actual staging conditions as they code. Every change gets tested against real data instantly, so agents catch broken assumptions before you do, not after. monday.com cut dev cycle time by 70% running this way. 5k GitHub stars and growing. Try mirrord free.

30 days ago

The VFS | Internals for Interns

https://internals-for-interns.com/posts/linux-kernel-vfs/

Understanding the Linux Kernel: The VFS what actually happens when a program opens a file? file operations work identically on an ext4 file (the disk filesystem most Linux distributions use by default), a file in /proc that exists only as kernel memory, and a file on an NFS share on another machine. Same calls, same file descriptor semantics, same close() at the end.

#linux #kernel #vfs #filesystems

30 days ago

Text Editor Data Structures

https://cdacamar.github.io/data%20structures/algorithms/benchmarking/text%20editors/c++/editor-data-structures/

Text Editor Data Structures Text editors can be an interesting challenge to program. The types of problems that text editors need to solve can range from trivial to mind-bogglingly difficult. Recently, I have been on something of a spiritual journey to rework some internal data structures in an editor I have been building, specifically the most fundamental data structure to any text editor: the text.

30 days ago

Scaling to 1 million concurrent sandboxes in seconds | Modal Blog

https://modal.com/blog/scaling-to-1-million-concurrent-sandboxes-in-seconds

Scaling to 1 million concurrent sandboxes in seconds modal.com rebuilt their core sandbox platform from ground up to support run millions of sandboxes concurrently and create ten of thoudsands of sandboxes per second.

30 days ago

Making 768 servers look like 1 — PlanetScale

https://planetscale.com/blog/making-768-servers-look-like-1

Making 768 servers look like 1 Database sharding is the best way to scale a Postgres or MySQL database for anything beyond a few terabytes of data. Let’s look at how we go from a small single-node database, to one with a few terabytes spread across four shards, all the way up to one that is sharded across 768 servers and storing a petabyte of data

30 days ago

Measuring input latency on Linux: X11 vs Wayland, VRR, and DXVK - Marco Nett

https://marco-nett.de/blog/measuring-input-latency-on-linux-x11-vs-wayland-vrr-dxvk/

Measuring input latency on Linux: X11 vs Wayland, VRR, and DXVK People kept telling OP that Linux could perform way better than Windows when it comes to FPS, frame pacing and input latency. So he came up with an idea to actuallly measure that.

30 days ago

How to Achieve Pruning When Querying by Non-Partitioned Columns in PostgreSQL

https://hakibenita.com/postgresql-partition-pruning

How to Achieve Pruning When Querying by Non-Partitioned Columns in PostgreSQL One of the most valuable things about partitioned tables is pruning - the database’s ability to eliminate entire partitions based on a query predicate. Under conventional wisdom, pruning can only be achieved when querying by the partition key - this makes choosing the right key extremely difficult. However, if your data follows certain patterns, using some clever tricks you can achieve pruning even when filtering by non-partition key columns.

30 days ago

Let’s Build PlanetScale From Scratch: Infrastructure

https://onatm.dev/2026/07/16/homescale-part-1/

Let's Build PlanetScale From Scratch: Infrastructure This isn’t about building a production system but more about a PoC and learning. The idea is we de-couple storage from compute, leverage the power of storage, especially CoW(Copy on write) to branching and do cool thing with database similar to PlanetScale.

30 days ago

Who's running all those tiny RPKI servers? | APNIC Blog

https://blog.apnic.net/2026/07/15/whos-running-all-those-tiny-rpki-servers/

Who’s running all those tiny RPKI servers? Border Gateway Protocol (BGP) lacks built-in trust. Resource Public Key Infrastructure (RPKI) addresses that problem by letting address space holders cryptographically authorize which Autonomous System (AS) may originate their prefixes, via Route Origin Authorizations (ROAs) published through a chain of trust anchored at the five Regional Internet Registries (RIRs). But there are also independent operators contributes to this RPKI. In this post, we investigate who operates those small servers and why.

#guest post #routing #rpki #security

30 days ago

Branch‑Avoidant Programming

https://easylang.online/blog/branchless

When ‘if’ slows you down, avoid it With modern CPUs, avoiding branch mispredictions is a key method for speeding up programs. One of the most effective ways to reduce mispredictions is to simply avoid branches.

30 days ago

Putting the "You" in CPU

https://cpu.land/

Putting the “You” in CPU Curious exactly what happens when you run a program on your computer? Read this article to learn how multiprocessing works, what system calls really are, how computers manage memory with hardware interrupts, and how Linux loads executables.

#unix #linux #mmu #paging #memory management #cpu

30 days ago

PocketJS — Bare Metal Modern Web

https://pocketjs.dev/

pocketjs: Bare Metal Modern Web High-performance JSX UI outside the browser, with native rendering, standard Vue Vapor and Solid support, a Tailwind design system, and 60 FPS animation under an 8 MB memory budget.

30 days ago

GitHub - Michael-Manning/E-Paper-Climate-Logger

https://github.com/Michael-Manning/E-Paper-Climate-Logger

Weathergotchi - an E-Paper Climate Logger an open-source, battery-powered temperature and humidity data logger with an always-on e-paper display. It records ambient conditions over time, stores readings in non-volatile memory, and displays current data along with a history graph. The device is designed for low power consumption, over 1 week of operation on a small Li‑Po battery.

30 days ago

GitHub - huridocs/pdf-document-layout-analysis: A Docker-powered service for PDF document layout analysis. This service provides a powerful and flexible PDF analysis service. The service allows for the segmentation and classification of different parts of PDF pages, identifying the elements such as texts, titles, pictures, tables and so on.

https://github.com/huridocs/pdf-document-layout-analysis

PDF Document Layout Analysis A Docker-powered microservice for intelligent PDF document layout analysis, OCR, and content extraction

30 days ago