Optimizing Ruby’s JSON, Part 1

I was recently made maintainer of the json gem, and aside from fixing some old bugs, I focused quite a bit on its performance, so that it is now the fastest JSON parser and generator for Ruby on most benchmarks. Contrary to what one might think, there wasn’t any black magic or deep knowledge involved. Most of the performance patches I applied were fairly simple optimizations driven by profiling. A

[YassLab]

“I have way more optimizations than these ones to talk about, but I feel like it’s already a pretty packed blog post. So I’ll stop here and work on some followup soon, hopefully I won’t lose my motivation to write :). / Edit: Looks like I didn’t, part two is here.”

[iga_k]

byrootさんによるRuby3.4で入るjson gem 2.9.0の高速化解説