I believe that finding the “best” cotnainer in terms of performance is a very difficult task and it is based on your specific use case, that is - how do you use it? Since this is a RESTful API, I think it will be interesting for you to serve a large number of clients using some simple services. Therefore, if I were you, I would look for a server that is stable for a huge number of requests.
Please check out this interesting article to give you more information on the topic of performance.
Personally, I would go with embedded tomcat or jetty .
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