Master advanced logger techniques to revolutionize your Go experience. Say goodbye to messy and hard-to-read logs with fmt and log packages. Excessive logging leads to performance issues and log file bloat. Create a custom logger with different logging levels for clarity and precision. Embrace this approach and watch your Go applications flourish. π #LogLikeAPro #CodeWizardry
π Introduction
[Music] welcome fellow coders today we’re diving deep into the world of logging. We’ll unravel the mysteries of fmt prints log package and discuss the common pitfalls developer face. Then brace yourselves for a groundbreaking approach to logging tailored to elevate your Go code to new heights.
π‘ Basic Logging with fmt and log Package
Go provides the fmt and log packages for basic logging, but they come with their limitations. While slightly better, log.printLn still doesn’t offer the control needed in large scale applications. Developers often face issues like log file bloat and unimportant messages in critical logs due to excessive logging and inappropriate log level categorization.
| Method | Description |
|---|---|
| fmt.println | Great for simple messages but lacks the sophistication needed for structured logs |
| log.printLn | Offers more features like date, time, and file path |
βοΈ The nitty-gritty of Log Package
The log package provides more features like setting flags to get more information from the logs, such as date, time, microseconds, and file path.
| Flags | Description |
|---|---|
| Ldate | Puts the date time |
| Lmicroseconds | Prints the time in microseconds |
| Llongfile | Prints the absolute file path |
π¨ Catching Errors with Log Package
The panic method halts the normal execution of a program when an unexpected error occurs while the fatal function halts the program completely.
| Method | Description |
|---|---|
| panic | Halts the normal execution of a program |
| fatal | Completely halts the program |
π Custom Logger Implementation
Implementing a custom logger in a separate package allows for more control and customization, including different logging levels and methods to log at different levels. The key elements of the custom logger include:
- Logging levels for info, warning, and error
- Different log instances for separate settings or flags for various log levels
- Methods to set and control log levels
| Logger Structure | Description |
|---|---|
| Info Logger | Prints logs on standard output with the "info" prefix and standard flags |
| Warning Logger | Separate instance for warning logs |
| Error Logger | Separate instance for error logs |
π Utilizing Custom Logger
In the main function, utilizing the custom logger allows for orchestration of a symphony of logs with clarity and precision, enhancing Go applications with a refined approach to logging.
Conclusion
Go logging is not just a task, it’s an art. With a custom logger, developers can orchestrate a symphony of logs, ensuring nuanced control, precision, and clarity in the application logs.
Key Takeaways:
- Basic logging with fmt and log package
- Utilizing flags for comprehensive log information
- Implementing a custom logger for enhanced control and precision
π Don’t forget to like, subscribe, and click that notification bell for more coding wizardry! Until next time, keep coding and keep logging smartly!
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