Cache Expensive Function Calls via Proxy
Understand how to apply the Proxy pattern in Node.js to cache expensive function calls transparently. Learn to intercept function calls using the apply trap, store results based on arguments, and serve cached data for repeated inputs without changing the original function logic.
We'll cover the following...
We'll cover the following...
Problem statement
Your analytics module runs expensive computations on input data. Repeated calls with the same arguments waste CPU time because the function recalculates the same result repeatedly.
You want to use a Proxy to automatically cache results for identical arguments, so repeated calls are served instantly from memory. This will simulate how memoization ...