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Track Function Call Count with a Decorator

Explore how to implement a withCallCount decorator to monitor and log the number of times a function is called. This lesson guides you in wrapping both synchronous and asynchronous functions while preserving their original behavior and name, enabling effective monitoring without modifying existing code.

Problem statement

You’re debugging a utility function that’s being overused in production. You want to track how many times it’s called—without modifying the function itself. We’ll use a decorator to wrap it, maintain an internal counter, and log the count of each ...