14
Efficiency and Performance
Every story has a villain. For developers, that villain is usually time. They must write code in a given time frame and ideally, the code must run as fast as possible. Most of the errors and bugs are a result of fighting with time constraints, both realistic and imaginary ones! So, this chapter is here to help you fight with the second aspect of time: efficiency and performance. For the first aspect of time, you need a good manager with technical skills.
The first part of the chapter is about benchmarking Go code using benchmark functions that measure the performance of a function or an entire program. Thinking that the implementation of a function is faster than a different implementation is not enough. We need ...
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