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This article presents jsongrep, a tool for querying JSON documents efficiently using a DFA-based approach. It explains the tool's features, how it processes queries, and benchmarks its performance against other JSON querying tools.
- jsongrep compiles queries into a DFA upfront instead of interpreting them, giving single-pass, constant-time-per-symbol matching versus tools that backtrack or revisit nodes
- It benchmarks faster than jq, jmespath, jsonpath-rust, and jql
- It's a focused search tool (paths, wildcards, recursive descent, filtering), not a transformation tool like jq, and still lacks some of jq's broader functionality