How Does Understanding and Debugging Memory Leaks in Your Node.js Applications [I] Work?

Imagine you're playing with building blocks, and every time you finish a tower, you leave all the blocks on the floor instead of putting them back in the box, soon, the room gets cluttered, and you can't build new towers anymore. That's like a memory leak in your Node. js app.

A memory leak happens when your program keeps using more and more memory, even though it doesn’t need to. It’s like leaving toys scattered around the room, you still have all the toys, but you can't see them clearly anymore because there's just too much stuff everywhere.

Debugging a memory leak is like cleaning up after yourself, you look at where the clutter started and figure out why it keeps happening. You might use tools that show you which parts of your app are using the most memory. Then, you check if those parts are holding onto things they don’t need anymore.

Sometimes, a block (or a piece of data) is used once but never let go, like a toy that stays on the floor even after you're done playing with it. Finding and fixing these hidden clutter spots helps your app run smoothly again.