What practices can be employed to monitor and optimize the memory usage of a Node.js application hosted in a Docker container?

Consider implementing monitoring tools such as Promethus, Grafana, or the build-in Node.js function "process.memoryUsage()" to collect usage metrics. Then, set memory limits using the Docker Compose or Kubernetes configuration to prevent excessive resource consumption.

Of course, you should regularly review your Node.js code for potential memory leaks, inefficient data structures, or large memory allocations. Lastly, remember to implement health checks within your Docker container to detect and restart instances when memory thresholds are exceeded.