JSON Stream
JSON stream parsing incrementally parses JSON as data arrives instead of buffering the whole document, supporting large JSON and real-time processing.
Purpose
To parse JSON incrementally in memory-constrained or real-time scenarios such as SSE event streams, large files, and chunked API responses.
Mechanism
A streaming parser keeps a syntax state machine updated character by character or chunk by chunk, emitting each complete value (object/array element) as soon as it is ready without waiting for the document to end. It is SAX-style or line-by-line NDJSON.
Use cases
- Parsing large JSON files
- SSE/NDJSON streams
- Streaming API responses