Centralized vs. Independent Logging in Go: What's the Best Approach?

Global Logging in Go: Best Practice and Implementation

When dealing with application logging in Go, developers sometimes face a dilemma while working with multiple goroutines. Should logging be handled centrally or independently, and how to approach global logging efficiently?

Centralized Logging

One common approach is to create a single log.Logger instance and pass it around the application as a pointer. This allows all goroutines to access and use the same logger, ensuring consistency and avoid potential concurrency issues.

Independent Logging

Alternatively, each goroutine or function could create its own log.Logger. While this approach provides isolation, it can lead to code duplication and potential logging inconsistencies across the application.

Creating a Global Logger

As for creating the logger as a global variable, it depends on the application. If logging needs to be managed consistently across the entire application, then creating a global logger can be beneficial. However, if logging requirements vary based on different components or modules, having separate loggers for each component may be more appropriate.

Recommended Approach

Based on the best practices, the recommended approach is to create a single log.Logger instance for each major component or subsystem within the application. This allows for flexible logging configuration and isolation while maintaining a structured and consistent approach to logging.

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