Book Image

Learning ServiceNow. - Second Edition

5 (1)
Book Image

Learning ServiceNow. - Second Edition

5 (1)

Overview of this book

This book is an updated version of Learning ServiceNow, that will cover the new and updated features of the ServiceNow platform. It will show you how to put important ServiceNow features to work in the real world, while introducing key concepts via examples of managing and automating IT services. It'll help you build a solid foundation of knowledge, and will demonstrate how to effectively implement and configure modules within ServiceNow. We'll show you how to configure and administer your instance, and then move on to building strong user interfaces and creating powerful workflows. We also cover other key elements of ServiceNow, such as notifications, security, reporting, and custom development. You will learn how to improve and automate your business' workflow and processes. By the end of this book, you will be able to successfully configure and manage ServiceNow like a pro.
Table of Contents (19 chapters)
Learning ServiceNow Second Edition
Contributors
Preface
Index

Build for performance


Client-side performance is just as important as server-side performance, but it's even easier to negatively impact client-side performance, since any server lookups have the potential to lock up the user's browser for a couple of seconds (a lifetime to an end-user!). Even scripted actions which you might not think would result in server lookups, such as updating a reference field value, can result in a synchronous server lookup, which can negatively impact a user's browser performance.

Note

As we learned earlier in this chapter, specifying a third argument (the display value of the record) when setting a reference field, prevents the server lookup, improving performance!

It's important to understand which actions may result in performance-impacting server lookups. It's equally important to understand how (and when) to mitigate that performance impact using asynchronous callback functions, or by combining lookups into one big request and providing all of the information...