Reflection-based JSON in C++ at Gigabytes per Second
Daniel Lemire's blog highlights advancements in JSON processing in C++, particularly with the upcoming C++26 standard introducing reflection, which simplifies serialization and boosts performance to 1900 MB/s.
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Daniel Lemire's blog discusses the challenges and advancements in handling JSON data in C++. JSON is widely used for data representation, but its processing can be slow, particularly in C++. Existing libraries like simdjson have improved speed, allowing for gigabytes per second processing. However, developers still face hurdles in mapping JSON to C++ structures efficiently. The upcoming C++26 standard introduces powerful reflection capabilities, which will enable automatic serialization and deserialization of data structures, significantly simplifying the process for programmers. This feature will allow C++ to match the ease of use found in other languages that already support reflection. Lemire's prototype demonstrates the potential of this new feature, achieving impressive benchmark results, with speeds reaching up to 1900 MB/s compared to 100 MB/s with traditional libraries. This advancement is expected to enhance performance and safety in JSON processing, making C++ more competitive in data handling tasks.
- JSON processing in C++ has traditionally been slow and cumbersome.
- The upcoming C++26 standard will introduce powerful reflection, simplifying JSON serialization and deserialization.
- A prototype using C++26 reflection shows significant performance improvements over existing libraries.
- Benchmark tests indicate speeds of up to 1900 MB/s with the new approach.
- This development positions C++ to better compete with other programming languages in data handling efficiency.
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