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Apex Design Patterns

You're reading from  Apex Design Patterns

Product type Book
Published in Apr 2016
Publisher
ISBN-13 9781782173656
Pages 256 pages
Edition 1st Edition
Languages
Concepts
Authors (2):
Anshul Verma Anshul Verma
Profile icon Anshul Verma
LinkedIn
Anshul Verma has been working on the Salesforce platform since 2006. Prior to that, he has done extensive development using MS technologies on web, desktop, and mobile applications. He possesses a tremendous understanding of enterprise-scale systems and has worked in designing intricate systems with high scalability, performance, and robustness. He has been a Dreamforce speaker and is a regular contributor to Stack Exchange and other developer communities. He has four Salesforce certifications and is currently working as a project manager and technical architect where he is responsible for managing customer success and delivering high-quality solutions to his clients. He has conducted various training sessions in his current organization and trained over 50 new hires. He is very popular with his training batches and can be often found sharing his knowledge with his team and peers. He owns and maintains his blog (http://mightycoder.blogspot.com/), and you can follow him on Twitter at @toanshulverma.
See other products by Anshul Verma
Jitendra Zaa Jitendra Zaa
Profile icon Jitendra Zaa
LinkedIn
Jitendra Zaa has been working on the Salesforce platform since 2008. He has extensively worked on Java and .NET-based enterprise applications. He also has experience in working with multiple JavaScript libraries, web frameworks, ETL tools, and databases. He is an expert in designing and implementing integrations of Salesforce with external systems. He is a regular speaker at the worlds biggest developer event, Dreamforce, mostly in developer track. Because of his contributions to the Salesforce community, he has also been awarded the Salesforce MVP title. He has more than eight Salesforce certifications and works as a Salesforce technical architect. He owns one of the most viewed Salesforce developer blogs (http://www.JitendraZaa.com), formerly, http://Shivasoft.in. You can follow him on Twitter at @JitendraZaa.
See other products by Jitendra Zaa
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Table of Contents (12) Chapters

Apex Design Patterns
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Preface
1. An Introduction to Apex Design Pattern 2. Creational Patterns 3. Structural Patterns 4. Behavioral Patterns 5. Handling Concurrency in Apex 6. Anti-patterns and Best Practices

Reproducing concurrency problems in Apex

Let's try to understand and reproduce a concurrency issue in Salesforce. In this chapter, we will take an example of a nonprofit firm, which is funded by many corporates. The fund information is saved in a custom object named fund account. This nonprofit company is in the process of going online and currently does not support a fund transfer using online payment gateways. Interested volunteers of different companies need to call the organization's contact number to provide information about their contributions. The custom object fund account stores the aggregated contributions of all the employees of a company. Now, the foundation has been set up; let's look at a simple case of a concurrency issue.

The following figure shows the schema of the custom object fund account:

Two employees of the company ABC call the customer service of this nonprofit organization at the same time. The already available fund of the company ABC is $10,000 and both the...

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Authors (2)

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Profile icon Anshul Verma
LinkedIn
Anshul Verma has been working on the Salesforce platform since 2006. Prior to that, he has done extensive development using MS technologies on web, desktop, and mobile applications. He possesses a tremendous understanding of enterprise-scale systems and has worked in designing intricate systems with high scalability, performance, and robustness. He has been a Dreamforce speaker and is a regular contributor to Stack Exchange and other developer communities. He has four Salesforce certifications and is currently working as a project manager and technical architect where he is responsible for managing customer success and delivering high-quality solutions to his clients. He has conducted various training sessions in his current organization and trained over 50 new hires. He is very popular with his training batches and can be often found sharing his knowledge with his team and peers. He owns and maintains his blog (http://mightycoder.blogspot.com/), and you can follow him on Twitter at @toanshulverma.
Read more
See other products by Anshul Verma
Profile icon Jitendra Zaa
LinkedIn
Jitendra Zaa has been working on the Salesforce platform since 2008. He has extensively worked on Java and .NET-based enterprise applications. He also has experience in working with multiple JavaScript libraries, web frameworks, ETL tools, and databases. He is an expert in designing and implementing integrations of Salesforce with external systems. He is a regular speaker at the worlds biggest developer event, Dreamforce, mostly in developer track. Because of his contributions to the Salesforce community, he has also been awarded the Salesforce MVP title. He has more than eight Salesforce certifications and works as a Salesforce technical architect. He owns one of the most viewed Salesforce developer blogs (http://www.JitendraZaa.com), formerly, http://Shivasoft.in. You can follow him on Twitter at @JitendraZaa.
Read more
See other products by Jitendra Zaa
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