Article URL: https://www.bbc.com/news/articles/cjwyzrr9d3dko Comments URL: https://news.ycombinator.com/item?id=49724141 Points: 54 # Comments: 12
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A backend engineer reported a 340% spike in database write latency after their table passed 50 million rows, with CPU usage normal and storage I/O saturated. The cause was using random UUIDv4 values as primary keys, which were chosen to avoid enumeration attacks and simplify distributed ID generation. Relational databases store primary keys in sorted B-Tree indexes, so random keys land in arbitrary positions, forcing cold page reads, frequent page splits, and bloated, half-empty index pages. The problem is worse in MySQL's InnoDB, where the primary key also determines physical row order, fragmenting the entire table. The author benchmarks UUIDv4 against the time-ordered UUIDv7 standard, which places a timestamp first so new keys append near the end of the index.
A common problem arises when clients send low-resolution JPGs with white backgrounds that look poor on dark or high-density screens and in large-format print. The article argues that most logo issues stem from missing file types rather than design flaws. It recommends requesting a vector master file such as AI or SVG, print-ready PDF or EPS files, and transparent PNGs in several sizes. It also suggests color variants, multiple layouts, and color codes in HEX, RGB, CMYK, and Pantone. The core advice is that every other format can be exported from a vector source, while small raster images cannot be scaled up well.
Blender 5.3 has been released, according to the official Blender website. The update adds support for Gaussian Splats, a technique for representing and rendering 3D scenes. The announcement drew attention on Hacker News, where it received 16 points and one comment. The source material provides only the release announcement and discussion metadata, so further details about the feature's capabilities are not available here.
Google has made Gemini 4 Carbon available, according to a post on its official blog. The item was shared on Hacker News, where it drew 55 points and 22 comments. The source material does not include further details about the model's capabilities, pricing, or intended uses.
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