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By Sergio Colque Ponce — Software Engineering, Universidad Privada de Tacna. Full source code: github.com/srg-cp/design-principles-go When people s
The Problem Every Node.js rate limiting solution I tried had the same issue — Redis in the hot path. Request comes in → middleware → netwo
Diving into Go has been incredibly refreshing. Coming into it, you might expect a powerful language to come bogged down with complex syntax. Instead,
A retrospective on toykv — a single-node, in-memory key-value store with append-only-file persistence, RESP2-compatible on the wire, three binaries,
3614. Process String with Special Operations II Difficulty: Hard Topics: Senior Staff, String, Simulation, Weekly Contest 458 You are given a strin
Introduction In the world of Go programming, the struct{}—an empty struct—stands out as a curious anomaly. It occupies zero bytes of memo
I recently shipped SnapShelf, a transparent always-on-top "staging shelf" for Windows; you fling files at the right edge of your screen, it slides in,
Learn how context engineering shapes what your AI coding agent sees on every turn, and use four practical strategies to keep your Python projects on t
A while back I ripped a regex out of my SQL parser and replaced it with twenty lines of hand-written string scanning. Then I got nervous. Hand-rolling
A store feels slow. Someone has installed forty extensions over three years. The usual advice is "disable them one at a time and see what helps." That
Build a working framework to manage your AI coding agent's context window using four practical strategies for Python projects.
A founder told me last year: "We need admin features shipped by Friday. Can we just hardcode the roles for now?" That was 7 months ago. They're st
I make a lot of design decisions on gut feeling. Is this the right way to structure MCP tools? Should the transport be remote or local? How much conte
You've built a checkout reactor that reserves inventory, charges a card, generates a shipping label, and sends a confirmation email. It runs through S
Every Rails app that takes Stripe webhooks has some version of this controller: def create payload = request.body.read sig_header = request.
I love Ruby. It is the language that made me happy to write code. But as a Rails developer, I eventually hit a wall. Maybe I needed to process a 2GB C
Learn which Python skills employers value most and how to build them, using a skill roadmap worksheet, weekly practice plan, and interview prep tips.
Every SaaS project I've started begins the same way: wire up Devise, figure out JWT, build Stripe service objects, set up i18n, configure Docker, writ
Every Rails project has at least one of these. A model with an old column that's probably not used anymore. "Probably" is the scary part. If something
Test how well you can turn scattered Python study into a focused plan for landing a developer job, from skill roadmap to interview prep.