Serde Json vs Rapidjson (Rust vs C++)

• json-benchmark

  12 168 4.8 C++

  nativejson-benchmark in Rust

  

But the code OP posted deserializes JSON without knowing anything about the structure, which is known to be slow in serde-json and doesn't appear to be the focus for the library. The json and json-deserializer crates should perform much better in that scenario.

• pikkr

  1 628 0.0 Rust

  JSON parser which picks up values directly without performing tokenization in Rust

  

Finally, there are parsers specifically tuned to only getting a single key as fast as possible.

• WorkOS

  workos.com sponsored

  The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

  

• json_typegen

  1 235 2.1 Rust

  Tools and libraries to create types for Rust, Kotlin, TypeScript and Python from JSON samples

You can use https://github.com/evestera/json_typegen directly, that’s what the website uses internally

• serde_json_borrow

  2 66 5.1 Rust

  Fast JSON deserialization on borrowed data

The rust version also measures allocation overhead by a lot. The c++ version uses “insitu” parsing which means it prefers “borrowing” over allocating new structures (like for strings). You might wanna add https://github.com/PSeitz/serde_json_borrow to your comparison, iiuc it supports a “Value” which borrows from the input. If that’s too slow for you too, you might wanna take a look at an alternative json parser, eg. https://crates.io/crates/simd-json.

Suggest a related project