There are many situations where a particular method needs to be executed at a time by just one thread or http request.

For example it’s common that scheduled tasks in our project be executed at most once at the same time. If a task is being executed on one node, it acquires a lock that prevents execution of the that task from another thread or another node in clustering.

Another situation is when we need to lock a particular method with its input or parameters.

for example imagine we have an API that receive userId and foodId and do something…

Amir Shokri

Java Developer

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