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11.4 Summary

Over the course of the last three sections, we've introduced how to handle errors in Go, first looking at good error handling practices and design, then learning how to use the GDB debugger effectively. We saw that with GDB, we can perform single-step debugging, view and modify our program variables during execution, and print out the relevant process information. Finally, we described how to use Go's built-in testing framework to write unit and stress tests. Properly using this framework allows us to easily make any future changes to our code and perform the necessary regression testing. Good web applications must have good error handling, and part of that is having readable errors and error handling mechanisms which can scale in a predictable manner. Using the tools mentioned above as well as writing high quality and thorough unit and stress tests, we can have peace of mind knowing that once our applications are live, they can maintain optimal performance and run as expected.

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