From 3f96d150de97592be25af7378332b7d6f72f868a Mon Sep 17 00:00:00 2001 From: Aviv Keller <38299977+RedYetiDev@users.noreply.github.com> Date: Mon, 22 Apr 2024 09:45:19 -0400 Subject: [PATCH 1/4] doc, meta: add troubleshooting guide --- TROUBLESHOOTING.md | 156 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 156 insertions(+) create mode 100644 TROUBLESHOOTING.md diff --git a/TROUBLESHOOTING.md b/TROUBLESHOOTING.md new file mode 100644 index 00000000000000..dfb72114b787e8 --- /dev/null +++ b/TROUBLESHOOTING.md @@ -0,0 +1,156 @@ +# Troubleshooting Node.js + +### 1. Verify Node.js Installation: +- **Problem**: Node.js might not be installed or configured correctly. +- **Solution**: + - Check if Node.js is installed by running `node -v` in your terminal. + - If not installed, download and install Node.js from the [official website][1]. + - Ensure that the installation directory is included in your system's PATH. + +### 2. Check Package Dependencies: +- **Problem**: Missing or outdated dependencies can cause issues. +- **Solution**: + - Navigate to your project directory and run `npm install` to install dependencies defined in `package.json`. + - Check for any errors during the installation process. + +### 3. Debugging JavaScript Code: +- **Problem**: Unexpected behavior or errors in your JavaScript code. +- **Solution**: + - Use `console.log()` statements to debug your code and trace the flow. + - Utilize Node.js debugger by running your script with [`node inspect`or `node --inspect`][2]. + - Consider using a debugger like [VSCode][3] or [Chrome DevTools][4] for more advanced debugging. + +### 4. Handling Errors: +- **Problem**: Uncaught exceptions or errors in Node.js applications. +- **Solution**: + - Implement error handling using try-catch blocks or `.catch()` method for promises. + - Use event listeners for unhandled exceptions and rejections (`process.on('uncaughtException')` and `process.on('unhandledRejection')`) to log errors and gracefully shut down the application. + +### 5. Memory Leaks and Performance Issues: +- **Problem**: Memory leaks or poor performance leading to high memory usage or slow response times. +- **Solution**: + - Use Node.js built-in tools like [`--inspect`][2] or [`--prof`][5] to analyze memory usage and performance. + - Profile your application using tools to identify memory leaks and performance bottlenecks. + - Optimize code by minimizing synchronous operations, using streams for large data, and implementing caching where applicable. + +### 6. Network Issues: +- **Problem**: Issues related to network connectivity or HTTP requests. +- **Solution**: + - Check network configurations and firewall settings. + - Ensure that the correct URLs and ports are used in your application. + - Handle timeouts and retries for network requests to prevent hanging. + +### 7. Deployment and Environment Issues: +- **Problem**: Differences between development and production environments. +- **Solution**: + - Ensure that environment variables are correctly set, especially for sensitive data. + - Use tools like [dotenv][8] to manage environment-specific configurations. + - Verify that production dependencies are properly installed and up-to-date. + +### 8. Module Loading and Paths: +- **Problem**: Issues with module loading or incorrect file paths. +- **Solution**: + - Verify that required modules are installed and accessible. + - Check for relative paths and ensure they are correct. + - Consider using [`require.resolve()`][9] to troubleshoot module loading issues. + +### 9. Version Conflicts and Compatibility: +- **Problem**: Dependency version conflicts or compatibility issues. +- **Solution**: + - Review dependency versions in `package.json` and ensure compatibility. + - Use [`npm audit`][10] to check for security vulnerabilities and outdated dependencies. + - Consider using npm's [`npm ci`][11] command to install dependencies from `package-lock.json` for consistent installs. + +### 10. Monitoring and Logging: +- **Problem**: Insufficient visibility into application behavior. +- **Solution**: + - Implement logging using libraries to track application activity and errors. + - Use monitoring tools to monitor application performance and health. + - Set up alerts for critical errors or performance degradation. + +### 11. Security Vulnerabilities: +- **Problem**: Vulnerabilities in dependencies or insecure coding practices. +- **Solution**: + - Regularly update dependencies to patch security vulnerabilities. + - Use security scanning tools like [npm audit][10] to identify and fix vulnerabilities. + - Follow security best practices such as input validation, proper authentication, and secure data handling. + +### 12. System Resources and Limits: +- **Problem**: Node.js processes consuming too much CPU, memory, or other resources. +- **Solution**: + - Monitor system resources using tools like `top`, `htop`, or your OS's built-in resource monitor. + - Adjust Node.js process settings such as maximum memory usage (`--max-old-space-size`) or CPU affinity if necessary. + - Consider load balancing and scaling your application to distribute resources effectively. + +### 13. Third-Party Modules and Native Add-ons: +- **Problem**: Issues with third-party modules or native add-ons. +- **Solution**: + - Ensure that native dependencies are compatible with your platform and architecture. + - Check documentation and community support for known issues and workarounds. + - Consider alternative modules or implementations if the problem persists. + +### 14. Node.js Version Compatibility: +- **Problem**: Incompatibility between your Node.js version and dependencies. +- **Solution**: + - Ensure that your dependencies support your Node.js version. + - Use version managers like [nvm][12] or [n][13] to manage multiple Node.js installations. + - Consider upgrading or downgrading Node.js version if necessary. + +### 15. Community Resources and Documentation: +- **Problem**: Difficulty in troubleshooting specific issues. +- **Solution**: + - Search online resources like [Stack Overflow][14], [GitHub issues][15], or [Node.js forums][16] for similar problems and solutions. + - Consult official Node.js documentation, including [API references][17] and [guides][18]. + - Engage with the Node.js community through forums, chat rooms, or social media for assistance. + +### 16. Performance Optimization: +- **Problem**: Slow application performance or high response times. +- **Solution**: + - Profile your application using tools like `--prof` to identify performance bottlenecks. + - Optimize critical code paths by reducing unnecessary operations and improving algorithms. + - Use caching, asynchronous I/O, and concurrency to improve scalability and responsiveness. + +### 17. Testing and Continuous Integration: +- **Problem**: Undetected issues due to lack of automated testing or CI/CD pipelines. +- **Solution**: + - Implement unit tests, integration tests, and end-to-end tests to catch bugs and regressions early. + - Use CI/CD pipelines to automate testing, building, and deployment processes. + - Utilize toos (Like the `node:test` module) for testing Node.js applications. + +### 18. Containerization and Orchestration: +- **Problem**: Issues with containerized Node.js applications or orchestration platforms. +- **Solution**: + - Ensure that Docker images are properly configured with necessary dependencies and environment variables. + - Use orchestration tools for managing containerized applications. + - Monitor containerized applications for resource usage, performance, and health. + +### 19. File System and Permissions: +- **Problem**: File system-related issues such as file permissions or file not found errors. +- **Solution**: + - Check file permissions to ensure that Node.js has appropriate access to read and write files. + - Verify file paths and ensure that files/directories exist where expected. + - Use appropriate file system APIs and handle errors gracefully. + +### 20. Scalability and Load Balancing: +- **Problem**: Node.js application struggles to handle high traffic or load. +- **Solution**: + - Scale your application horizontally by running multiple instances behind a load balancer. + - Implement clustering to manage multiple Node.js processes. + - Monitor performance and adjust resources dynamically to handle varying loads. + +[1]: https://nodejs.org/ +[2]: https://nodejs.org/en/docs/guides/debugging-getting-started/ +[3]: https://code.visualstudio.com/docs/nodejs/nodejs-debugging/ +[4]: https://developers.google.com/web/tools/chrome-devtools +[5]: https://nodejs.org/en/docs/guides/simple-profiling/ +[8]: https://www.npmjs.com/package/dotenv +[9]: https://nodejs.org/api/modules.html#requireresolverequest-options +[10]: https://docs.npmjs.com/cli/v7/commands/npm-audit +[11]: https://docs.npmjs.com/cli/v7/commands/npm-ci +[12]: https://github.com/nvm-sh/nvm +[13]: https://github.com/tj/n +[14]: https://stackoverflow.com/ +[15]: https://github.com/nodejs/node/issues +[16]: https://github.com/nodejs/node/discussions +[17]: https://nodejs.org/api/ +[18]: https://nodejs.org/en/docs/guides/ From ab396c06c6e867965a7135840c7f64e5ad322922 Mon Sep 17 00:00:00 2001 From: Aviv Keller <38299977+RedYetiDev@users.noreply.github.com> Date: Mon, 22 Apr 2024 09:54:36 -0400 Subject: [PATCH 2/4] Update TROUBLESHOOTING.md --- TROUBLESHOOTING.md | 112 ++++++++++++++++++++++++++++++--------------- 1 file changed, 75 insertions(+), 37 deletions(-) diff --git a/TROUBLESHOOTING.md b/TROUBLESHOOTING.md index dfb72114b787e8..c6934d99e4f041 100644 --- a/TROUBLESHOOTING.md +++ b/TROUBLESHOOTING.md @@ -4,34 +4,45 @@ - **Problem**: Node.js might not be installed or configured correctly. - **Solution**: - Check if Node.js is installed by running `node -v` in your terminal. - - If not installed, download and install Node.js from the [official website][1]. + - If not installed, download and install Node.js from the + [official website][1]. - Ensure that the installation directory is included in your system's PATH. ### 2. Check Package Dependencies: - **Problem**: Missing or outdated dependencies can cause issues. - **Solution**: - - Navigate to your project directory and run `npm install` to install dependencies defined in `package.json`. + - Navigate to your project directory and run `npm install` to install + dependencies defined in `package.json`. - Check for any errors during the installation process. ### 3. Debugging JavaScript Code: - **Problem**: Unexpected behavior or errors in your JavaScript code. - **Solution**: - Use `console.log()` statements to debug your code and trace the flow. - - Utilize Node.js debugger by running your script with [`node inspect`or `node --inspect`][2]. - - Consider using a debugger like [VSCode][3] or [Chrome DevTools][4] for more advanced debugging. + - Utilize Node.js debugger by running your script with + [`node inspect`or `node --inspect`][2]. + - Consider using a debugger like [VSCode][3] or [Chrome DevTools][4] for more + advanced debugging. ### 4. Handling Errors: - **Problem**: Uncaught exceptions or errors in Node.js applications. - **Solution**: - - Implement error handling using try-catch blocks or `.catch()` method for promises. - - Use event listeners for unhandled exceptions and rejections (`process.on('uncaughtException')` and `process.on('unhandledRejection')`) to log errors and gracefully shut down the application. + - Implement error handling using try-catch blocks or `.catch()` method + for promises. + - Use event listeners for unhandled exceptions and rejections + (`process.on('uncaughtException')` and `process.on('unhandledRejection')`) to + log errors and gracefully shut down the application. ### 5. Memory Leaks and Performance Issues: -- **Problem**: Memory leaks or poor performance leading to high memory usage or slow response times. +- **Problem**: Memory leaks or poor performance leading to high memory usage +or slow response times. - **Solution**: - - Use Node.js built-in tools like [`--inspect`][2] or [`--prof`][5] to analyze memory usage and performance. - - Profile your application using tools to identify memory leaks and performance bottlenecks. - - Optimize code by minimizing synchronous operations, using streams for large data, and implementing caching where applicable. + - Use Node.js built-in tools like [`--inspect`][2] or [`--prof`][5] to + analyze memory usage and performance. + - Profile your application using tools to identify memory leaks and + performance bottlenecks. + - Optimize code by minimizing synchronous operations, using streams for + large data, and implementing caching where applicable. ### 6. Network Issues: - **Problem**: Issues related to network connectivity or HTTP requests. @@ -43,7 +54,8 @@ ### 7. Deployment and Environment Issues: - **Problem**: Differences between development and production environments. - **Solution**: - - Ensure that environment variables are correctly set, especially for sensitive data. + - Ensure that environment variables are correctly set, especially for + sensitive data. - Use tools like [dotenv][8] to manage environment-specific configurations. - Verify that production dependencies are properly installed and up-to-date. @@ -52,14 +64,17 @@ - **Solution**: - Verify that required modules are installed and accessible. - Check for relative paths and ensure they are correct. - - Consider using [`require.resolve()`][9] to troubleshoot module loading issues. + - Consider using [`require.resolve()`][9] to troubleshoot module loading + issues. ### 9. Version Conflicts and Compatibility: - **Problem**: Dependency version conflicts or compatibility issues. - **Solution**: - Review dependency versions in `package.json` and ensure compatibility. - - Use [`npm audit`][10] to check for security vulnerabilities and outdated dependencies. - - Consider using npm's [`npm ci`][11] command to install dependencies from `package-lock.json` for consistent installs. + - Use [`npm audit`][10] to check for security vulnerabilities and outdated + dependencies. + - Consider using npm's [`npm ci`][11] command to install dependencies from + `package-lock.json` for consistent installs. ### 10. Monitoring and Logging: - **Problem**: Insufficient visibility into application behavior. @@ -72,20 +87,27 @@ - **Problem**: Vulnerabilities in dependencies or insecure coding practices. - **Solution**: - Regularly update dependencies to patch security vulnerabilities. - - Use security scanning tools like [npm audit][10] to identify and fix vulnerabilities. - - Follow security best practices such as input validation, proper authentication, and secure data handling. + - Use security scanning tools like [npm audit][10] to identify and fix + vulnerabilities. + - Follow security best practices such as input validation, proper + authentication, and secure data handling. ### 12. System Resources and Limits: -- **Problem**: Node.js processes consuming too much CPU, memory, or other resources. +- **Problem**: Node.js processes consuming too much CPU, memory, or other +resources. - **Solution**: - - Monitor system resources using tools like `top`, `htop`, or your OS's built-in resource monitor. - - Adjust Node.js process settings such as maximum memory usage (`--max-old-space-size`) or CPU affinity if necessary. - - Consider load balancing and scaling your application to distribute resources effectively. + - Monitor system resources using tools like `top`, `htop`, or your OS's + built-in resource monitor. + - Adjust Node.js process settings such as maximum memory usage + (`--max-old-space-size`) or CPU affinity if necessary. + - Consider load balancing and scaling your application to distribute + resources effectively. ### 13. Third-Party Modules and Native Add-ons: - **Problem**: Issues with third-party modules or native add-ons. - **Solution**: - - Ensure that native dependencies are compatible with your platform and architecture. + - Ensure that native dependencies are compatible with your platform and + architecture. - Check documentation and community support for known issues and workarounds. - Consider alternative modules or implementations if the problem persists. @@ -93,50 +115,66 @@ - **Problem**: Incompatibility between your Node.js version and dependencies. - **Solution**: - Ensure that your dependencies support your Node.js version. - - Use version managers like [nvm][12] or [n][13] to manage multiple Node.js installations. + - Use version managers like [nvm][12] or [n][13] to manage multiple Node.js + installations. - Consider upgrading or downgrading Node.js version if necessary. ### 15. Community Resources and Documentation: - **Problem**: Difficulty in troubleshooting specific issues. - **Solution**: - - Search online resources like [Stack Overflow][14], [GitHub issues][15], or [Node.js forums][16] for similar problems and solutions. - - Consult official Node.js documentation, including [API references][17] and [guides][18]. - - Engage with the Node.js community through forums, chat rooms, or social media for assistance. + - Search online resources like [Stack Overflow][14], [GitHub issues][15], + or [Node.js forums][16] for similar problems and solutions. + - Consult official Node.js documentation, including [API references][17] + and [guides][18]. + - Engage with the Node.js community through forums, chat rooms, or social + media for assistance. ### 16. Performance Optimization: - **Problem**: Slow application performance or high response times. - **Solution**: - - Profile your application using tools like `--prof` to identify performance bottlenecks. - - Optimize critical code paths by reducing unnecessary operations and improving algorithms. - - Use caching, asynchronous I/O, and concurrency to improve scalability and responsiveness. + - Profile your application using tools like `--prof` to identify performance + bottlenecks. + - Optimize critical code paths by reducing unnecessary operations and + improving algorithms. + - Use caching, asynchronous I/O, and concurrency to improve scalability and + responsiveness. ### 17. Testing and Continuous Integration: -- **Problem**: Undetected issues due to lack of automated testing or CI/CD pipelines. +- **Problem**: Undetected issues due to lack of automated testing or CI/CD +pipelines. - **Solution**: - - Implement unit tests, integration tests, and end-to-end tests to catch bugs and regressions early. + - Implement unit tests, integration tests, and end-to-end tests to catch bugs + and regressions early. - Use CI/CD pipelines to automate testing, building, and deployment processes. - Utilize toos (Like the `node:test` module) for testing Node.js applications. ### 18. Containerization and Orchestration: -- **Problem**: Issues with containerized Node.js applications or orchestration platforms. +- **Problem**: Issues with containerized Node.js applications or orchestration +platforms. - **Solution**: - - Ensure that Docker images are properly configured with necessary dependencies and environment variables. + - Ensure that Docker images are properly configured with necessary + dependencies and environment variables. - Use orchestration tools for managing containerized applications. - - Monitor containerized applications for resource usage, performance, and health. + - Monitor containerized applications for resource usage, performance, and + health. ### 19. File System and Permissions: -- **Problem**: File system-related issues such as file permissions or file not found errors. +- **Problem**: File system-related issues such as file permissions or file not +found errors. - **Solution**: - - Check file permissions to ensure that Node.js has appropriate access to read and write files. + - Check file permissions to ensure that Node.js has appropriate access to + read and write files. - Verify file paths and ensure that files/directories exist where expected. - Use appropriate file system APIs and handle errors gracefully. ### 20. Scalability and Load Balancing: - **Problem**: Node.js application struggles to handle high traffic or load. - **Solution**: - - Scale your application horizontally by running multiple instances behind a load balancer. + - Scale your application horizontally by running multiple instances behind + a load balancer. - Implement clustering to manage multiple Node.js processes. - - Monitor performance and adjust resources dynamically to handle varying loads. + - Monitor performance and adjust resources dynamically to handle varying + loads. [1]: https://nodejs.org/ [2]: https://nodejs.org/en/docs/guides/debugging-getting-started/ From 972d638e41e968b7bd220256f532378d19a5aee5 Mon Sep 17 00:00:00 2001 From: Aviv Keller <38299977+RedYetiDev@users.noreply.github.com> Date: Mon, 22 Apr 2024 10:01:02 -0400 Subject: [PATCH 3/4] Update TROUBLESHOOTING.md --- TROUBLESHOOTING.md | 197 +++++++++++++++++++++++---------------------- 1 file changed, 99 insertions(+), 98 deletions(-) diff --git a/TROUBLESHOOTING.md b/TROUBLESHOOTING.md index c6934d99e4f041..0a0322d53a9bde 100644 --- a/TROUBLESHOOTING.md +++ b/TROUBLESHOOTING.md @@ -1,181 +1,182 @@ # Troubleshooting Node.js ### 1. Verify Node.js Installation: -- **Problem**: Node.js might not be installed or configured correctly. -- **Solution**: - - Check if Node.js is installed by running `node -v` in your terminal. - - If not installed, download and install Node.js from the +* **Problem**: Node.js might not be installed or configured correctly. +* **Solution**: + * Check if Node.js is installed by running `node -v` in your terminal. + * If not installed, download and install Node.js from the [official website][1]. - - Ensure that the installation directory is included in your system's PATH. + * Ensure that the installation directory is included in your system's PATH. ### 2. Check Package Dependencies: -- **Problem**: Missing or outdated dependencies can cause issues. -- **Solution**: - - Navigate to your project directory and run `npm install` to install +* **Problem**: Missing or outdated dependencies can cause issues. +* **Solution**: + * Navigate to your project directory and run `npm install` to install dependencies defined in `package.json`. - - Check for any errors during the installation process. + * Check for any errors during the installation process. ### 3. Debugging JavaScript Code: -- **Problem**: Unexpected behavior or errors in your JavaScript code. -- **Solution**: - - Use `console.log()` statements to debug your code and trace the flow. - - Utilize Node.js debugger by running your script with +* **Problem**: Unexpected behavior or errors in your JavaScript code. +* **Solution**: + * Use `console.log()` statements to debug your code and trace the flow. + * Utilize Node.js debugger by running your script with [`node inspect`or `node --inspect`][2]. - - Consider using a debugger like [VSCode][3] or [Chrome DevTools][4] for more + * Consider using a debugger like [VSCode][3] or [Chrome DevTools][4] for more advanced debugging. ### 4. Handling Errors: -- **Problem**: Uncaught exceptions or errors in Node.js applications. -- **Solution**: - - Implement error handling using try-catch blocks or `.catch()` method +* **Problem**: Uncaught exceptions or errors in Node.js applications. +* **Solution**: + * Implement error handling using try-catch blocks or `.catch()` method for promises. - - Use event listeners for unhandled exceptions and rejections + * Use event listeners for unhandled exceptions and rejections (`process.on('uncaughtException')` and `process.on('unhandledRejection')`) to log errors and gracefully shut down the application. ### 5. Memory Leaks and Performance Issues: -- **Problem**: Memory leaks or poor performance leading to high memory usage +* **Problem**: Memory leaks or poor performance leading to high memory usage or slow response times. -- **Solution**: - - Use Node.js built-in tools like [`--inspect`][2] or [`--prof`][5] to +* **Solution**: + * Use Node.js built-in tools like [`--inspect`][2] or [`--prof`][5] to analyze memory usage and performance. - - Profile your application using tools to identify memory leaks and + * Profile your application using tools to identify memory leaks and performance bottlenecks. - - Optimize code by minimizing synchronous operations, using streams for + * Optimize code by minimizing synchronous operations, using streams for large data, and implementing caching where applicable. ### 6. Network Issues: -- **Problem**: Issues related to network connectivity or HTTP requests. -- **Solution**: - - Check network configurations and firewall settings. - - Ensure that the correct URLs and ports are used in your application. - - Handle timeouts and retries for network requests to prevent hanging. +* **Problem**: Issues related to network connectivity or HTTP requests. +* **Solution**: + * Check network configurations and firewall settings. + * Ensure that the correct URLs and ports are used in your application. + * Handle timeouts and retries for network requests to prevent hanging. ### 7. Deployment and Environment Issues: -- **Problem**: Differences between development and production environments. -- **Solution**: - - Ensure that environment variables are correctly set, especially for +* **Problem**: Differences between development and production environments. +* **Solution**: + * Ensure that environment variables are correctly set, especially for sensitive data. - - Use tools like [dotenv][8] to manage environment-specific configurations. - - Verify that production dependencies are properly installed and up-to-date. + * Use tools like [dotenv][8] to manage environment-specific configurations. + * Verify that production dependencies are properly installed and up-to-date. ### 8. Module Loading and Paths: -- **Problem**: Issues with module loading or incorrect file paths. -- **Solution**: - - Verify that required modules are installed and accessible. - - Check for relative paths and ensure they are correct. - - Consider using [`require.resolve()`][9] to troubleshoot module loading +* **Problem**: Issues with module loading or incorrect file paths. +* **Solution**: + * Verify that required modules are installed and accessible. + * Check for relative paths and ensure they are correct. + * Consider using [`require.resolve()`][9] to troubleshoot module loading issues. ### 9. Version Conflicts and Compatibility: -- **Problem**: Dependency version conflicts or compatibility issues. -- **Solution**: - - Review dependency versions in `package.json` and ensure compatibility. - - Use [`npm audit`][10] to check for security vulnerabilities and outdated +* **Problem**: Dependency version conflicts or compatibility issues. +* **Solution**: + * Review dependency versions in `package.json` and ensure compatibility. + * Use [`npm audit`][10] to check for security vulnerabilities and outdated dependencies. - - Consider using npm's [`npm ci`][11] command to install dependencies from + * Consider using npm's [`npm ci`][11] command to install dependencies from `package-lock.json` for consistent installs. ### 10. Monitoring and Logging: -- **Problem**: Insufficient visibility into application behavior. -- **Solution**: - - Implement logging using libraries to track application activity and errors. - - Use monitoring tools to monitor application performance and health. - - Set up alerts for critical errors or performance degradation. +* **Problem**: Insufficient visibility into application behavior. +* **Solution**: + * Implement logging using libraries to track application activity and errors. + * Use monitoring tools to monitor application performance and health. + * Set up alerts for critical errors or performance degradation. ### 11. Security Vulnerabilities: -- **Problem**: Vulnerabilities in dependencies or insecure coding practices. -- **Solution**: - - Regularly update dependencies to patch security vulnerabilities. - - Use security scanning tools like [npm audit][10] to identify and fix +* **Problem**: Vulnerabilities in dependencies or insecure coding practices. +* **Solution**: + * Regularly update dependencies to patch security vulnerabilities. + * Use security scanning tools like [npm audit][10] to identify and fix vulnerabilities. - - Follow security best practices such as input validation, proper + * Follow security best practices such as input validation, proper authentication, and secure data handling. ### 12. System Resources and Limits: -- **Problem**: Node.js processes consuming too much CPU, memory, or other +* **Problem**: Node.js processes consuming too much CPU, memory, or other resources. -- **Solution**: - - Monitor system resources using tools like `top`, `htop`, or your OS's +* **Solution**: + * Monitor system resources using tools like `top`, `htop`, or your OS's built-in resource monitor. - - Adjust Node.js process settings such as maximum memory usage + * Adjust Node.js process settings such as maximum memory usage (`--max-old-space-size`) or CPU affinity if necessary. - - Consider load balancing and scaling your application to distribute + * Consider load balancing and scaling your application to distribute resources effectively. ### 13. Third-Party Modules and Native Add-ons: -- **Problem**: Issues with third-party modules or native add-ons. -- **Solution**: - - Ensure that native dependencies are compatible with your platform and +* **Problem**: Issues with third-party modules or native add-ons. +* **Solution**: + * Ensure that native dependencies are compatible with your platform and architecture. - - Check documentation and community support for known issues and workarounds. - - Consider alternative modules or implementations if the problem persists. + * Check documentation and community support for known issues and workarounds. + * Consider alternative modules or implementations if the problem persists. ### 14. Node.js Version Compatibility: -- **Problem**: Incompatibility between your Node.js version and dependencies. -- **Solution**: - - Ensure that your dependencies support your Node.js version. - - Use version managers like [nvm][12] or [n][13] to manage multiple Node.js +* **Problem**: Incompatibility between your Node.js version and dependencies. +* **Solution**: + * Ensure that your dependencies support your Node.js version. + * Use version managers like [nvm][12] or [n][13] to manage multiple Node.js installations. - - Consider upgrading or downgrading Node.js version if necessary. + * Consider upgrading or downgrading Node.js version if necessary. ### 15. Community Resources and Documentation: -- **Problem**: Difficulty in troubleshooting specific issues. -- **Solution**: - - Search online resources like [Stack Overflow][14], [GitHub issues][15], +* **Problem**: Difficulty in troubleshooting specific issues. +* **Solution**: + * Search online resources like [Stack Overflow][14], [GitHub issues][15], or [Node.js forums][16] for similar problems and solutions. - - Consult official Node.js documentation, including [API references][17] + * Consult official Node.js documentation, including [API references][17] and [guides][18]. - - Engage with the Node.js community through forums, chat rooms, or social + * Engage with the Node.js community through forums, chat rooms, or social media for assistance. ### 16. Performance Optimization: -- **Problem**: Slow application performance or high response times. -- **Solution**: - - Profile your application using tools like `--prof` to identify performance +* **Problem**: Slow application performance or high response times. +* **Solution**: + * Profile your application using tools like `--prof` to identify performance bottlenecks. - - Optimize critical code paths by reducing unnecessary operations and + * Optimize critical code paths by reducing unnecessary operations and improving algorithms. - - Use caching, asynchronous I/O, and concurrency to improve scalability and + * Use caching, asynchronous I/O, and concurrency to improve scalability and responsiveness. ### 17. Testing and Continuous Integration: -- **Problem**: Undetected issues due to lack of automated testing or CI/CD +* **Problem**: Undetected issues due to lack of automated testing or CI/CD pipelines. -- **Solution**: - - Implement unit tests, integration tests, and end-to-end tests to catch bugs +* **Solution**: + * Implement unit tests, integration tests, and end-to-end tests to catch bugs and regressions early. - - Use CI/CD pipelines to automate testing, building, and deployment processes. - - Utilize toos (Like the `node:test` module) for testing Node.js applications. + * Use CI/CD pipelines to automate testing, building, and deployment processes. + * Utilize toos (Like the `node:test` module) for testing Node.js applications. ### 18. Containerization and Orchestration: -- **Problem**: Issues with containerized Node.js applications or orchestration +* **Problem**: Issues with containerized Node.js applications or orchestration platforms. -- **Solution**: - - Ensure that Docker images are properly configured with necessary +* **Solution**: + * Ensure that Docker images are properly configured with necessary dependencies and environment variables. - - Use orchestration tools for managing containerized applications. - - Monitor containerized applications for resource usage, performance, and + * Use orchestration tools for managing containerized applications. + * Monitor containerized applications for resource usage, performance, and health. ### 19. File System and Permissions: -- **Problem**: File system-related issues such as file permissions or file not +* **Problem**: File system-related issues such as file permissions or file not found errors. -- **Solution**: - - Check file permissions to ensure that Node.js has appropriate access to +* **Solution**: + * Check file permissions to ensure that Node.js has appropriate access to read and write files. - - Verify file paths and ensure that files/directories exist where expected. - - Use appropriate file system APIs and handle errors gracefully. + * Verify file paths and ensure that files/directories exist where expected. + * Use appropriate file system APIs and handle errors gracefully. ### 20. Scalability and Load Balancing: -- **Problem**: Node.js application struggles to handle high traffic or load. -- **Solution**: - - Scale your application horizontally by running multiple instances behind +* **Problem**: Node.js application struggles to handle high traffic or load. +* **Solution**: + * Scale your application horizontally by running multiple instances behind a load balancer. - - Implement clustering to manage multiple Node.js processes. - - Monitor performance and adjust resources dynamically to handle varying + * Implement clustering to manage multiple Node.js processes. + * Monitor performance and adjust resources dynamically to handle varying loads. + [1]: https://nodejs.org/ [2]: https://nodejs.org/en/docs/guides/debugging-getting-started/ [3]: https://code.visualstudio.com/docs/nodejs/nodejs-debugging/ From ce31512c755658956ddaa0dfb776c74b71140bbc Mon Sep 17 00:00:00 2001 From: Aviv Keller <38299977+RedYetiDev@users.noreply.github.com> Date: Sun, 5 May 2024 17:47:49 -0400 Subject: [PATCH 4/4] Update TROUBLESHOOTING.md --- TROUBLESHOOTING.md | 153 +++++++++++++++++++++++++-------------------- 1 file changed, 86 insertions(+), 67 deletions(-) diff --git a/TROUBLESHOOTING.md b/TROUBLESHOOTING.md index 0a0322d53a9bde..b479c8dfa4c3dd 100644 --- a/TROUBLESHOOTING.md +++ b/TROUBLESHOOTING.md @@ -1,50 +1,56 @@ # Troubleshooting Node.js ### 1. Verify Node.js Installation: + * **Problem**: Node.js might not be installed or configured correctly. * **Solution**: * Check if Node.js is installed by running `node -v` in your terminal. * If not installed, download and install Node.js from the - [official website][1]. + [official website][]. * Ensure that the installation directory is included in your system's PATH. ### 2. Check Package Dependencies: + * **Problem**: Missing or outdated dependencies can cause issues. * **Solution**: * Navigate to your project directory and run `npm install` to install - dependencies defined in `package.json`. + dependencies defined in `package.json`. * Check for any errors during the installation process. ### 3. Debugging JavaScript Code: + * **Problem**: Unexpected behavior or errors in your JavaScript code. * **Solution**: * Use `console.log()` statements to debug your code and trace the flow. * Utilize Node.js debugger by running your script with - [`node inspect`or `node --inspect`][2]. - * Consider using a debugger like [VSCode][3] or [Chrome DevTools][4] for more - advanced debugging. + [`node inspect` or `node --inspect`][`--inspect`]. + * Consider using a debugger like [VSCode][] or [Chrome DevTools][] for more + advanced debugging. ### 4. Handling Errors: + * **Problem**: Uncaught exceptions or errors in Node.js applications. * **Solution**: * Implement error handling using try-catch blocks or `.catch()` method - for promises. + for promises. * Use event listeners for unhandled exceptions and rejections - (`process.on('uncaughtException')` and `process.on('unhandledRejection')`) to - log errors and gracefully shut down the application. + (`process.on('uncaughtException')` and `process.on('unhandledRejection')`) to + log errors and gracefully shut down the application. ### 5. Memory Leaks and Performance Issues: + * **Problem**: Memory leaks or poor performance leading to high memory usage -or slow response times. + or slow response times. * **Solution**: - * Use Node.js built-in tools like [`--inspect`][2] or [`--prof`][5] to - analyze memory usage and performance. + * Use Node.js built-in tools like [`--inspect`][] or [`--prof`][] to + analyze memory usage and performance. * Profile your application using tools to identify memory leaks and - performance bottlenecks. + performance bottlenecks. * Optimize code by minimizing synchronous operations, using streams for - large data, and implementing caching where applicable. + large data, and implementing caching where applicable. ### 6. Network Issues: + * **Problem**: Issues related to network connectivity or HTTP requests. * **Solution**: * Check network configurations and firewall settings. @@ -52,31 +58,35 @@ or slow response times. * Handle timeouts and retries for network requests to prevent hanging. ### 7. Deployment and Environment Issues: + * **Problem**: Differences between development and production environments. * **Solution**: * Ensure that environment variables are correctly set, especially for - sensitive data. - * Use tools like [dotenv][8] to manage environment-specific configurations. + sensitive data. + * Use tools like [dotenv][] to manage environment-specific configurations. * Verify that production dependencies are properly installed and up-to-date. ### 8. Module Loading and Paths: + * **Problem**: Issues with module loading or incorrect file paths. * **Solution**: * Verify that required modules are installed and accessible. * Check for relative paths and ensure they are correct. - * Consider using [`require.resolve()`][9] to troubleshoot module loading - issues. + * Consider using [`require.resolve()`][] to troubleshoot module loading + issues. ### 9. Version Conflicts and Compatibility: + * **Problem**: Dependency version conflicts or compatibility issues. * **Solution**: * Review dependency versions in `package.json` and ensure compatibility. - * Use [`npm audit`][10] to check for security vulnerabilities and outdated - dependencies. - * Consider using npm's [`npm ci`][11] command to install dependencies from - `package-lock.json` for consistent installs. + * Use [`npm audit`][] to check for security vulnerabilities and outdated + dependencies. + * Consider using npm's [`npm ci`][] command to install dependencies from + `package-lock.json` for consistent installs. ### 10. Monitoring and Logging: + * **Problem**: Insufficient visibility into application behavior. * **Solution**: * Implement logging using libraries to track application activity and errors. @@ -84,112 +94,121 @@ or slow response times. * Set up alerts for critical errors or performance degradation. ### 11. Security Vulnerabilities: + * **Problem**: Vulnerabilities in dependencies or insecure coding practices. * **Solution**: * Regularly update dependencies to patch security vulnerabilities. - * Use security scanning tools like [npm audit][10] to identify and fix - vulnerabilities. + * Use security scanning tools like [`npm audit`][] to identify and fix + vulnerabilities. * Follow security best practices such as input validation, proper - authentication, and secure data handling. + authentication, and secure data handling. ### 12. System Resources and Limits: + * **Problem**: Node.js processes consuming too much CPU, memory, or other -resources. + resources. * **Solution**: * Monitor system resources using tools like `top`, `htop`, or your OS's - built-in resource monitor. + built-in resource monitor. * Adjust Node.js process settings such as maximum memory usage - (`--max-old-space-size`) or CPU affinity if necessary. + (`--max-old-space-size`) or CPU affinity if necessary. * Consider load balancing and scaling your application to distribute - resources effectively. + resources effectively. ### 13. Third-Party Modules and Native Add-ons: + * **Problem**: Issues with third-party modules or native add-ons. * **Solution**: * Ensure that native dependencies are compatible with your platform and - architecture. + architecture. * Check documentation and community support for known issues and workarounds. * Consider alternative modules or implementations if the problem persists. ### 14. Node.js Version Compatibility: + * **Problem**: Incompatibility between your Node.js version and dependencies. * **Solution**: * Ensure that your dependencies support your Node.js version. - * Use version managers like [nvm][12] or [n][13] to manage multiple Node.js - installations. + * Use version managers like [nvm][] or [n][] to manage multiple Node.js + installations. * Consider upgrading or downgrading Node.js version if necessary. ### 15. Community Resources and Documentation: + * **Problem**: Difficulty in troubleshooting specific issues. * **Solution**: - * Search online resources like [Stack Overflow][14], [GitHub issues][15], - or [Node.js forums][16] for similar problems and solutions. - * Consult official Node.js documentation, including [API references][17] - and [guides][18]. + * Search online resources like [StackOverflow][], [GitHub issues][], + or [Node.js Discussions][] for similar problems and solutions. + * Consult official Node.js documentation, including the [API reference][] + and [guides][]. * Engage with the Node.js community through forums, chat rooms, or social - media for assistance. + media for assistance. ### 16. Performance Optimization: + * **Problem**: Slow application performance or high response times. * **Solution**: - * Profile your application using tools like `--prof` to identify performance - bottlenecks. + * Profile your application using tools like [`--prof`][] to identify performance + bottlenecks. * Optimize critical code paths by reducing unnecessary operations and - improving algorithms. + improving algorithms. * Use caching, asynchronous I/O, and concurrency to improve scalability and - responsiveness. + responsiveness. ### 17. Testing and Continuous Integration: + * **Problem**: Undetected issues due to lack of automated testing or CI/CD -pipelines. + pipelines. * **Solution**: * Implement unit tests, integration tests, and end-to-end tests to catch bugs - and regressions early. + and regressions early. * Use CI/CD pipelines to automate testing, building, and deployment processes. * Utilize toos (Like the `node:test` module) for testing Node.js applications. ### 18. Containerization and Orchestration: + * **Problem**: Issues with containerized Node.js applications or orchestration -platforms. + platforms. * **Solution**: * Ensure that Docker images are properly configured with necessary - dependencies and environment variables. + dependencies and environment variables. * Use orchestration tools for managing containerized applications. * Monitor containerized applications for resource usage, performance, and - health. + health. ### 19. File System and Permissions: + * **Problem**: File system-related issues such as file permissions or file not -found errors. + found errors. * **Solution**: * Check file permissions to ensure that Node.js has appropriate access to - read and write files. + read and write files. * Verify file paths and ensure that files/directories exist where expected. * Use appropriate file system APIs and handle errors gracefully. ### 20. Scalability and Load Balancing: + * **Problem**: Node.js application struggles to handle high traffic or load. * **Solution**: * Scale your application horizontally by running multiple instances behind - a load balancer. + a load balancer. * Implement clustering to manage multiple Node.js processes. * Monitor performance and adjust resources dynamically to handle varying - loads. - - -[1]: https://nodejs.org/ -[2]: https://nodejs.org/en/docs/guides/debugging-getting-started/ -[3]: https://code.visualstudio.com/docs/nodejs/nodejs-debugging/ -[4]: https://developers.google.com/web/tools/chrome-devtools -[5]: https://nodejs.org/en/docs/guides/simple-profiling/ -[8]: https://www.npmjs.com/package/dotenv -[9]: https://nodejs.org/api/modules.html#requireresolverequest-options -[10]: https://docs.npmjs.com/cli/v7/commands/npm-audit -[11]: https://docs.npmjs.com/cli/v7/commands/npm-ci -[12]: https://github.com/nvm-sh/nvm -[13]: https://github.com/tj/n -[14]: https://stackoverflow.com/ -[15]: https://github.com/nodejs/node/issues -[16]: https://github.com/nodejs/node/discussions -[17]: https://nodejs.org/api/ -[18]: https://nodejs.org/en/docs/guides/ + loads. + +[API reference]: https://nodejs.org/api/ +[Chrome DevTools]: https://developers.google.com/web/tools/chrome-devtools +[GitHub Issues]: https://github.com/nodejs/node/issues +[Node.js Discussions]: https://github.com/nodejs/node/discussions +[StackOverflow]: https://stackoverflow.com/ +[VSCode]: https://code.visualstudio.com/docs/nodejs/nodejs-debugging/ +[`--inspect`]: https://nodejs.org/en/docs/guides/debugging-getting-started/ +[`--prof`]: https://nodejs.org/en/docs/guides/simple-profiling/ +[`npm audit`]: https://docs.npmjs.com/cli/v7/commands/npm-audit +[`npm ci`]: https://docs.npmjs.com/cli/v7/commands/npm-ci +[`require.resolve()`]: https://nodejs.org/api/modules.html#requireresolverequest-options +[dotenv]: https://www.npmjs.com/package/dotenv +[guides]: https://nodejs.org/en/docs/guides/ +[n]: https://github.com/tj/n +[nvm]: https://github.com/nvm-sh/nvm +[official website]: https://nodejs.org/