[peterohler]

For some specific cases simdjson might be the fastest but it does fare as well in other cases as seen here: https://github.com/ohler55/compare-go-json or here: https://github.com/ohler55/ojc/blob/master/misc/compete.md. Parsing the JSON file is only part of the solution though. There needs to be an efficient and easy way to extract the data of interest. OjG (https://github.com/ohler55/ojg) has a JSONPath implementation for that. Written in go is a high performer.