24:I[50237,["/_next/static/chunks/0db4v-xi1q-jq.js","/_next/static/chunks/02-tqo9.1..63.js","/_next/static/chunks/0d3shmwh5_nmn.js","/_next/static/chunks/0n75_bb91cczk.js"],"Posts"] 25:T483,libfyaml 1.0.0-alpha7 adds an opt-in transparent parse cache for repeated reads of stable YAML/JSON files.

It is not making the parser itself hundreds of times faster. On a cache hit, libfyaml mmaps the generic arena and directly uses that instead of parsing the file. Due to the design of the generic subsystem it even avoids relocation and in 64bit systems with ASLR.

Benchmark run using the python binding on AllPrintings.json sized 427.5 MB.

- cache off: 16.98 s, +13.4 GB RSS - cold cache: 22.45 s, +13.4 GB RSS - hot cache: 35.9 ms, +1.0 MB RSS

That is about 473x faster on the hot-cache path versus a normal parse, with a much smaller memory delta. Also note how the RSS is essentially zero; the generic data in the arena are not even faulted in.

This is intended for startup/config/data-loading workloads where the same large YAML or JSON file is read repeatedly.

Benchmark commit: https://github.com/pantoniou/libfyaml/commit/f150432b36e409a...26:T475,I've always been interested in little physics sandboxes where you could build things, and was blown away by XKCD's machine a few years ago (https://news.ycombinator.com/item?id=39953514), which is in-turn based on the classic "The Incredible Machine". Building tiny machines is fun, so I decided to build an app that let's you build one. It's less geared around moving balls from point A to point B, but is more of a freeform build; whatever you can dream up.

Essentially, it let's you build simple machines, mechanisms, and simulations, and watch them play out. There's no practical purpose to it, other than it's fun to tinker, explore, and see what's possible.

Try it out, ask questions, and let me know what you think!

Live site: https://scribblerig.josnun.com Repo: https://github.com/JosNun/scribblerig

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