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Latest in Languages & Runtimes
A Boundary-First Benchmark for Low-Latency Crypto Trading Systems | HackerNoon
1+ hour, 17+ min ago (922+ words) Search "low-latency crypto trading framework," and you will find a lot of microsecond claims. Almost none of them tell you where the stopwatch started and where it stopped. That omission is the whole game. "Sub-100µs" can mean the time from…...
ESLint took 4.4s to lint Vue's core. oxlint took 0.24s. Then I turned on the type-aware rules.
1+ hour, 3+ min ago (515+ words) ESLint took 4.4 seconds to lint 445 TypeScript files. oxlint took 0.24. Turn on the type-aware rules that most projects actually want and ESLint climbs to 12 seconds, while oxlint, doing the type-aware pass too, finishes in under one. I went in expecting to…...
MySQL Overselling: Why SELECT Isn't Enough and How SELECT... FOR UPDATE Solves It
1+ hour, 44+ min ago (431+ words) Imagine you’re running an online store, there’s exactly one item left in stock. Two customers click... Tagged with database, mysql, backend, softwareengineering....
Design YouTube — Video Upload, Transcoding, and CDN Delivery at Scale
8+ min ago (257+ words) Design YouTube” is where two systems live in one product, pulling in opposite directions. The write side is a brutal …...
Why Is Redis So Fast? Understanding the In-Memory Database
8+ min ago (27+ words) Redis can deliver extremely low-latency reads and writes. Here’s how in-memory storage, persistence, data structures, and its mostly …...
Java 27???值得关注的新特???
4+ hour, 37+ min ago (89+ words) Java 开发者们，Java 27 即将在本周二（9 月 15 日）正式发布！ 发布时间：2026 年 9 月 15 日 核心焦点：共计 9 个 JEP（4 个正式特性，5 个预览/孵化特性） Java 27 通过 JEP 523 将 G1 GC 设置为全局默认垃圾回收器，彻底终结了这一行为差异。 紧凑对象头（Compact Object Headers）在 JDK 25 中作为正式功能引入，而在 Java 27 中正式通过 JEP 534 调整为默认启用！ 这一改动显著降低了对象占据的内存空间，从而直接减轻 CPU…...
Design YouTube — Video Upload, Transcoding & CDN Delivery at Scale (with Production.NET Code)
4+ hour, 34+ min ago (420+ words) This is the condensed walkthrough; the full guide (estimates, API, data model, and the full production.NET 9 code) is on my site 👇 The two sides scale very differently: Storage and transcode compute dominate the write side; the CDN is not…...
canvas.toBlob('image/avif') silently returns a PNG. Here's how I shipped AVIF export anyway
5+ hour, 20+ min ago (485+ words) If you have ever written canvas.toBlob(callback, 'image/avif'), there is a good chance your users have been downloading PNG files with an.avif name. That is what happened to me. I build Filewhisk, a set of image tools…...
Quick Sort: Fast Sorting with Divide and Conquer
5+ hour, 36+ min ago (1027+ words) Sorting is everywhere in software. In the previous article, we learned Merge Sort, which can sort an array in O(n log n) time. Quick Sort also uses the Divide and Conquer strategy, but it approaches the problem differently. Instead of…...
The Favorite Button Problem: Why the UI Shouldn’t Wait for the Server
1+ hour, 54+ min ago (219+ words) I was building a favorite/unfavorite feature for a production app: tap a gray star to favorite an item, tap a gold star to …...