What are memory leaks in async hooks and how can I prevent them?

What are memory leaks in async hooks and how can I prevent them?

Memory leaks in async hooks occur when resources are not properly released after use, leading to increased memory consumption. To prevent them, ensure that you clean up any references in your async functions and use tools like Node.js's built-in memory profiling.

Can you give me an example of a memory leak in an async hook?

Sure! A common example is when you create an async hook that stores data in a closure but forget to clear it after the operation is complete. This can keep the closure alive, preventing garbage collection.

How can I identify if my application has memory leaks?

You can use tools like Node.js's --inspect flag or third-party libraries like clinic.js to monitor memory usage and identify leaks.

What are the best practices to avoid memory leaks in Node.js?

Best practices include using weak references, cleaning up resources in callbacks, and regularly profiling your application to catch leaks early.