Re: New JSON library from the maker of Beast!

From: Glen Fernandes (glen.fernandes_at_[hidden])
Date: 2019-09-23 10:44:29

On Mon, Sep 23, 2019 at 5:19 AM Dominique Devienne via Boost
<boost_at_[hidden]> wrote:
> Hi,
>
> What about performance?
> Have you heard of https://github.com/lemire/simdjson?
> Where would your library fall in that benchmark at the above link?
> Finally, there are many corner cases in JSON parsing. Is there the
> equivalent
> of Autobabhn for WebSocket, but for JSON parsing? Any plans to integrate
> with such infrastructure, assuming there's one?

There's also https://github.com/miloyip/nativejson-benchmark which
benchmarks both performance and conformance.

> The already mentioned and popular nlohmann/json has a
> convenient API, but fairs poorly in that benchmark for example.
>
> Also, in client/server communications, it's less often a few huge JSON
> documents, but rather lots of small documents, so the constant "startup"
> time of the parser matters too, and in that same vein, a PULL-parser that
> allows to build the native data-structures directly, rather than the
> DOM-like
> approach of fully converting the document to a built-in JSON object, and
> then convert that to the native-structure, avoids the temp document, which
> is especially useful for large documents.
>

It looks like nlohmann/json now has this kind of API too:
1. https://tinyurl.com/nl-json-parse
2. https://tinyurl.com/nl-json-parse-callback

Glen