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Go Programming Cookbook

You're reading from   Go Programming Cookbook Over 85 recipes to build modular, readable, and testable Golang applications across various domains

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Product type Paperback
Published in Jul 2019
Publisher Packt
ISBN-13 9781789800982
Length 434 pages
Edition 2nd Edition
Languages
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Author (1):
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Aaron Torres Aaron Torres
Author Profile Icon Aaron Torres
Aaron Torres
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Toc

Table of Contents (16) Chapters Close

Preface 1. I/O and Filesystems FREE CHAPTER 2. Command-Line Tools 3. Data Conversion and Composition 4. Error Handling in Go 5. Network Programming 6. All about Databases and Storage 7. Web Clients and APIs 8. Microservices for Applications in Go 9. Testing Go Code 10. Parallelism and Concurrency 11. Distributed Systems 12. Reactive Programming and Data Streams 13. Serverless Programming 14. Performance Improvements, Tips, and Tricks 15. Other Books You May Enjoy

Benchmarking and finding bottlenecks

Another method for determining slow parts of code is to use benchmarks. Benchmarks can be used to test functions for average performance and can also run benchmarks in parallel. This can be useful when comparing functions or doing micro-optimizations for certain code, especially to see how a function implementation might perform when using it concurrently. For this recipe, we'll create two structures that both implement an atomic counter. The first will use the sync package, and the other will use sync/atomic. We'll then benchmark both the solutions.

How to do it...

These steps cover writing and running your application:

  1. From your Terminal or console application,createa new directory called~/projects/go-programming-cookbook/chapter14/benchand navigate to this directory.
  2. Run this command:
          $ go mod init github.com/PacktPublishing/Go-Programming-Cookbook-Second-Edition...
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