Have you ever noticed your React application getting slower the longer you use it? This could be a result of memory leaks. Memory leaks are a common performance issue in React applications. They can slow down your application, crash your browser, and...

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Memory leaks in React applications occur when components create resources like event listeners, timers, or subscriptions but fail to clean them up during unmounting. This causes applications to consume increasing amounts of RAM, leading to slowdowns and crashes. The guide demonstrates how to fix common memory leak sources by properly cleaning up event listeners with removeEventListener, clearing timers with clearInterval/clearTimeout, unsubscribing from external data sources, and canceling API requests using AbortController in useEffect cleanup functions.

How to Fix Memory Leaks in React Applications

Common Causes Of Memory Leaks And How To Fix Them

In summary, always clear or close things before component unmounting

Really good, basic article. A pro-tip on a little-known feature of useEffect().

To all those useEffect Nerds out there !