Alibaba Wen Shao came out again to reconstruct fastjson and launch fastjson 2

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fastjson

fastjson As a domestic github star most 、 The most popular json Parsing library , stay 2021 Years later, it will basically no longer be maintained .

You can see the pending issues There are about 1.7k

And the submission of code slowly decreases , Not very active in the end

Slowly, most companies will json Change the parsing library to jackjson.Spring Boot default json So is the parser jackjson.
Even though fastjson There are many advantages , But there are many shortcomings .

fastjson Some small shortcomings of

• Compatibility issues ： With the mainstream jackson、gson atypism
• Security ： There will be some security vulnerabilities (jackjson Also have )
• Jackson Scalability is very good
• Code quality issues , There may be some bug.

You can see that there are still many optimization points , However, due to too many changes and too little temperature, they dare not merge directly , Expect others to participate fastjson2 The open source , So here we can see that Wen Shao is preparing fastjson The refactoring of

Specific about fastjson Some shortcomings of can refer to some discussions on knowledge
https://www.zhihu.com/question/44199956

fastjson2

I've been shopping in recent days github Found fastjson2 Already under open source refactoring

Then look at Wen Shao's vision

You can see that the vision is still very good . It can be seen that the project is still in the development stage . The performance test provided by Wenshao also means a great performance improvement

summary

at present fastjson2 It's just been open source , There are no successful cases for the time being , If you are brave enough, you can try something fresh , However, for the company's projects, we should focus on stability , Looking forward to the follow-up fastjson2 The performance of the , Support domestic , We also encourage you to support open source , Contribute to open source