Summary

In this chapter, we have learned a lot about microservices and how to monitor microservices in Node.js using several principles and tools.

In summary, logging in microservices with Node.js is a crucial aspect of ensuring observability, troubleshooting, and maintaining the health of a distributed system. Here’s a summary of key points:

• Logging libraries: Use logging libraries such as Winston in Node.js for structured and flexible logging.
• Log levels: Utilize different log levels (for example, error, warn, info, debug) to categorize and prioritize logs based on severity.
• Structured logging: Implement structured logging by formatting logs as key-value pairs or JSON objects for better machine readability.
• Context propagation: Propagate contextual information (for example, request IDs) across microservices to correlate logs and trace the flow of requests.
• Error handling: Implement error handling and exception logging to capture detailed information...