How to: ![✔] 5.10. Measure and guard the memory usage
**TL;DR:** Node.js has controversial relationships with memory: the v8 engine has soft limits on memory usage (1.4GB) and there are known paths to leak memory in Node’s code – thus watching Node’s process memory is a must. In small apps, you may gauge memory periodically using shell commands but in medium-large apps consider baking your memory watch into a robust monitoring system

**Otherwise:** Your process memory might leak a hundred megabytes a day like how it happened at [Walmart](https://www.joyent.com/blog/walmart-node-js-memory-leak)

🔗 [**Read More: Measure and guard the memory usage**](./sections/production/measurememory.md)