What is the role and purpose of traceId fields in system logs?

The traceId field in logs is used for correlation and tracking the chain of calls or operations in distributed systems. It represents a unique identifier assigned to a request or transaction and passed between services.

Role of traceId:

• Allows linking all logs related to a single request, even if it passes through multiple microservices.
• Simplifies diagnostics and error cause analysis, as the full execution path can be traced.
• Helps analyze performance and identify bottlenecks.

For example, in processing an HTTP request in a microservice architecture, a traceId is created at the entry point and passed along via headers, and all logs related to this request contain this identifier.