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Mastering Apex Programming

Mastering Apex Programming

By : Paul Battisson
4.9 (12)
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Mastering Apex Programming

Mastering Apex Programming

4.9 (12)
By: Paul Battisson

Overview of this book

As applications built on the Salesforce platform are now a key part of many organizations, developers are shifting focus to Apex, Salesforce’s proprietary programming language. As a Salesforce developer, it is important to understand the range of tools at your disposal, how and when to use them, and best practices for working with Apex. Mastering Apex Programming will help you explore the advanced features of Apex programming and guide you in delivering robust solutions that scale. This book starts by taking you through common Apex mistakes, debugging, exception handling, and testing. You'll then discover different asynchronous Apex programming options and develop custom Apex REST web services. The book shows you how to define and utilize Batch Apex, Queueable Apex, and Scheduled Apex using common scenarios before teaching you how to define, publish, and consume platform events and RESTful endpoints with Apex. Finally, you'll learn how to profile and improve the performance of your Apex application, including architecture trade-offs. With code examples used to facilitate discussion throughout, by the end of the book, you'll have developed the skills needed to build robust and scalable applications in Apex.
Table of Contents (21 chapters)
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1
Section 1 – Triggers, Testing, and Security
8
Section 2 – Asynchronous Apex and Apex REST
15
Section 3 – Apex Performance

When to use Queueable Apex

There are three primary use cases for Queueable Apex, which we will discuss in this section, however, you may notice that some of them overlap with use cases we previously discussed for future methods and Batch Apex. This is because there is typically no one right answer for how you should look to architect and develop a solution—although there are often many wrong ways of doing things. When working on some of these overlapping use cases, the key question to consider is whether you wish to chain the asynchronous process you are building. If the answer is yes, then you are almost always going to get the best results using a Queueable Apex implementation. Let's now look at some common use cases in the following sections.

Extensive or complex processes

The first key use case is for extensive or complex database processes. What do I mean by this? As we know, Salesforce has a series of governor limits that are in place to ensure that resources...

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