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Dev tools · January 30, 2026

Streaming JSON in Rust

Terabytes of JSON, kilobytes of memory

Streaming JSON in Rust launched on January 30, 2026 with 7 votes, #1,609 of 14,584 launches that month and more than 90% of that year's launches.

What it does

Streaming JSON is a set of Rust libraries for parsing and transforming JSON using a sliding window approach, without loading the full document into memory. It includes: - "RJiter": a streaming JSON parser - "scan_json": trigger actions during parsing by matching keys and nested structures - "id_transform": copy input to output, a base for JSON rewriting - "ddb_convert": convert JSON to/from DynamoDB format, 12× faster than Python and 2× faster than a baseline Rust implementation

Process json while it's being generated. Contribute to olpa/streaming_json development by creating an account on GitHub.

Parse and transform JSON through a sliding window, without waiting for the complete document to load. scan_json is the fastest, 12 times faster than the Python botofrom github.com

Does a similar job

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