Importance of @scope ("prototype") in spring annotations

When we write many methods in an action class (in fact, it is a function of the concept of module programming), each method may not be the same return state,
If the action does not @scope ("prototype"), it is possible to report an error that xxxaction was not found. Writing this means that each request is re-created with an action,
Corresponds to Singalon, commonly known as "multiple cases" (also called prototypes).

Singleton is the creation of an instance, so when the multi-user operation, the thread is not secure, if the locking will cause the client access is very slow!