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Go Cookbook

You're reading from Go Cookbook Build modular, readable, and testable applications in Go

Product type Paperback

Published in Jun 2017

Publisher Packt

ISBN-13 9781783286836

Length 400 pages

Edition 1st Edition

Languages

Go

Concepts

Programming Language

Author (1):

Torres

View More author details

Table of Contents (20) Chapters

Title Page

Credits

About the Author

About the Reviewer

www.PacktPub.com

Customer Feedback

Preface

1. I/O and File Systems FREE CHAPTER

2. Command-Line Tools

3. Data Conversion and Composition

4. Error Handling in Go

5. All about Databases and Storage

6. Web Clients and APIs

7. Microservices for Applications in Go

8. Testing

9. Parallelism and Concurrency

10. Distributed Systems

11. Reactive Programming and Data Streams

12. Serverless Programming

13. Performance Improvements, Tips, and Tricks

Using the pprof tool

The pprof tools allows Go applications to collect and export runtime profiling data. It also provides web hooks to access the tool from a web interface. This recipe will create a basic application that verifies a bcrypt hashed password against a plaintext one, then it will profile the application.

You might expect the pprof tool to be in the Chapter 10, Distributed Systems,with other metrics and monitoring recipes. It was instead put in this chapter because it will be used to analyze and improve a program much in the same way benchmarking can be used. As a result, this recipe will largely focus on pprof for analyzing and improving the memory usage of an application.

Getting ready

Configure your environment by performing these steps:

Refer to the Getting ready section of the Speeding up compilation and testing cycles recipe in this chapter.
Optionally, install Graphviz from http://www.graphviz.org/Home.php.

How to do it...

These steps cover writing and running your application...

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Authors (1)

Torres

Torres

Aaron Torres received his master's degree in computer science from the New Mexico Institute of Mining and Technology. He has worked on distributed systems in high-performance computing and in large-scale web and microservices applications. He currently leads a team of Go developers that refines and focuses on Go best practices with an emphasis on continuous delivery and automated testing. Aaron has published a number of papers and has several patents in the area of storage and I/O. He is passionate about sharing his knowledge and ideas with others. He is also a huge fan of the Go language and open source for backend systems and development.

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