JSONPath VS libnbd

Another great alternative is JSONPath[1] which unfortunately not as widely supported and known despite being brilliant!

It's inspired by XPath so it's very familiar instead of a complete new DSL. The killer feature imo is the recursive key lookup so you can write `people..address` and it'll find all "address" keys that descend from "people" anywhere in the JSON. It's by far my favorite parsing language for JSON and I wrote an introduction blog on how to use it in JSON dataset parsing [2] :)

1 - https://github.com/JSONPath-Plus/JSONPath

2 - https://scrapfly.io/blog/parse-json-jsonpath-python/

Below is the small framework we use to fuzz a network client. It works by creating a Unix socket, forking, then having the client (under test) on one side of the socket and a small loop which reads the input file into the socket on the other side.

https://gitlab.com/nbdkit/libnbd/-/tree/master/fuzzing

We did a bunch of benchmarking around this when writing nbdcopy (https://gitlab.com/nbdkit/libnbd/-/tree/master/copy) which can copy file to file as well as between local files and NBD servers. There was also the goal to avoid polluting the page cache, which depending on if you're going to use the file content immediately afterwards or not matters.

Anyway long story short, the best thing we found (for Linux) was Linus's own advice linked from here: https://stackoverflow.com/a/3756466