Book Image

Mastering Apex Programming

By : Paul Battisson
5 (1)
Book Image

Mastering Apex Programming

5 (1)
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)
1
Section 1 – Triggers, Testing, and Security
8
Section 2 – Asynchronous Apex and Apex REST
15
Section 3 – Apex Performance

Summary

In this chapter, we discussed how we can best work to debug our Apex code when we have a bug or issue. We started by noting some of the differences between debugging Apex compared to other languages and platforms due to its cloud-centric execution model.

We then discussed the standard debugging life cycle for most developers, which involves a lot of switching between windows to get static debug logs to inspect. We looked at how we can improve this debug cycle, by first reproducing the bug in a test to (a) reduce our replication time and (b) provide us with a concrete way of ensuring that the bug has been fixed.

Following this, we discussed how we can aid ourselves by improving the way in which we configure the debug log filters within Salesforce to get access to the most relevant information. We then discussed the use of the SFDX CLI to stream these logs to the terminal and then further filter them using the tools provided by the command line. This provided us with a...