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Scaling Event-Driven APIs: Real-Time WebSockets and Redis Pub/Sub for High-Concurrency Apps
1+ hour, 8+ min ago (480+ words) From a business perspective, system instability during peak usage events directly damages user retention, degrades brand trust, and triggers SLA violations. For e-commerce, financial platforms, and real-time gaming, a latency spike or dropped connection state can result in direct financial…...
The more aggressive matmul kernel lost to the register budget
2+ hour, 11+ min ago (171+ words) The WebGPU matmul sweep started with a naive kernel, then added 16 by 16 workgroup tiling and a 4 by 4 output block per thread. At a 2048 cubed matrix size, the measured time moved from 47.24 ms for the naive kernel to 17.23 ms for tiling…...
When a Zero-Parameter Cache Overtakes a Transformer
3+ hour, 42+ min ago (574+ words) The question this series exists to answer, put in a form that can be measured: a transformer sees a fixed 64-token window, a count table over the current document sees the whole document, and as documents get longer, how much…...
We Took One App From 12 Users to 100,000. Here’s Every Time It Broke.
3+ min ago (1485+ words) A build log, in order. The app is a prop. The failures are real, and they arrive in a predictable sequence. Most scaling …...
How to Bulk Download Images: From URL Lists to a ZIP File
5+ hour, 7+ min ago (1250+ words) The most useful starting point is a list of direct image URLs. Once you have that list, you can download the files together with a browser tool or a small command-line workflow. This tutorial covers both approaches, plus a JavaScript…...
I Rewrote One Function in Squirrel, Then in C. One Line of Python Was Just as Fast.
8+ hour, 4+ min ago (543+ words) I maintain a 2D game engine in Python called ABS Engine. Last week I decided it needed C. Not because anything was slow. That is the embarrassing part. I wanted to drop a.c file into a folder and call it from Python…...
Designing Frontend Interfaces for Unreliable Networks and Low-End Devices
9+ hour, 8+ min ago (345+ words) This isn't a list of generic performance tips. It's the specific set of decisions that matter once you stop assuming a fast, stable connection and a capable device. The bigger lever is optimistic UI: update the interface as if the…...
How Seed4J Validates Compatibility
10+ hour, 37+ min ago (279+ words) How Seed4J uses Renovate, GitHub Actions, and 25 generated project configurations to validate compatibility across modern technology stacks. Tagged with opensource, githubactions, devops, security....
The database connection pool was configured with 50 connections, so why did the 20th request time…
7+ hour, 20+ min ago (30+ words) The database connection pool was configured with 50 connections, so why did the 20th request time out? Understanding how parallel database queries inside a single HTTP request can exhaust your …...
BPE-Style Tokenizers: The Small Algorithm That Decides What an LLM Can See
11+ hour, 30+ min ago (1289+ words) Hello, I'm Shrijith Venkatramana, and I'm building LiveReview — a blast-radius aware AI code review... Tagged with ai, webdev, programming, productivity....