If I'm interested in performance I'll build my data out of offset handles and lay everything down into a block and mmap() it around. That's parsing free, up to

If I'm interested in performance I'll build my data out of offset handles and lay everything down into a block and mmap() it around. That's parsing free, up to an htons() — but that's only a worst case scenario. Everything else is about not inventing something custom & being able to use easily vendored high-trust 3rd party tools. (In this case: a JSON library, LZ4, and/or SQLite.)