Are Spring Controllers Thread-Safe

Question

I came upon this Controller example, and am wondering if it is thread-safe? I am wondering specifically about the gson instance variable.

import org.springframe         


        

Answer 1

Just like servlets controller request handler methods are also not thread safe. Ie a multiple request to /test may make many threads execute test method.

In your example you dont have to worry about thread safety as gson.toJson(results) is the only operation on gson and seems like it wont alter the state of that object.