If your application is crashing, check for uncaught exceptions and promise rejections. Use process managers like PM2 to automatically restart your app and log error details for further investigation.

Frequent crashes in a Node.js application can be frustrating and disruptive, often indicating underlying issues that need immediate attention. The first step in addressing crashes is to examine your code for uncaught exceptions and unhandled promise rejections, as these are common causes of abrupt application termination. Ensure that you use try-catch blocks for synchronous code and attach .catch() handlers to all your promises to handle errors gracefully. Utilizing a process manager like PM2 can also significantly enhance your application's resilience; PM2 automatically restarts your app if it crashes, ensuring minimal downtime. Additionally, leverage PM2’s logging capabilities to capture error details whenever your application crashes, allowing you to analyze the logs for patterns or recurring issues. Another important aspect to consider is memory usage—if your application consumes too much memory, it may crash due to resource exhaustion. Use profiling tools to monitor memory consumption and identify potential leaks or inefficient memory usage patterns. Also, review your dependencies to ensure they are up-to-date and free of known bugs that could affect stability. By systematically investigating these areas, you can uncover the root causes of crashes and implement the necessary fixes to stabilize your application.