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Mastering ServiceNow

Mastering ServiceNow

By : Wood
4.1 (17)
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Mastering ServiceNow

Mastering ServiceNow

4.1 (17)
By: Wood

Overview of this book

ServiceNow is a SaaS application that provides workflow form-based applications. It is an ideal platform for creating enterprise-level applications giving requesters and fulfillers improved visibility and access to a process. ServiceNow-based applications often replace email by providing a better way to get work done. The book steps through the main aspects of the ServiceNow platform, from the ground up. It starts by exploring the core architecture of ServiceNow, including building the right data structure. To add business logic and control data, and interactivity to user interaction, you will be shown how to code on both server and the client. You will then learn more about the power of tasks, events and notifications. The book will then focus on using web services and other mechanisms to integrate ServiceNow with other systems. Furthermore, you will learn how to secure applications and data, and understand how ServiceNow performs logging and error reporting. You will then be shown how to package your applications and changes, so they can be installed elsewhere and ways to maintain them easily. If you wish to create an alternative simple interface, then explore ways to make ServiceNow beautiful using Service Portal. By the end of the book, you will know the fundamentals of the ServiceNow platform, helping you be a better ServiceNow System Administrator or developer.
Table of Contents (12 chapters)
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Optimizing hardware resources


ServiceNow allocates a pre-determined set of resources for each instance. As discussed in Chapter 1ServiceNow Foundations, an instance is independent, and a high load in one should not impact another instance.

Nonetheless, users do share resources with all those who use the same instance. To ensure that the platform can serve their request, the following strategies are employed by the ServiceNow cloud operations team:

  • Horizontal scaling, which gives busier instances more application nodes. The load balancer distributes users over the nodes. Read replicas are used to help fully loaded databases.

  • Vertical scaling, which includes providing the right level of memory and database connections.

    Note

    These parameters are controlled by the ServiceNow cloud infrastructure team. You can work with your ServiceNow representatives if you feel these are inadequate.

  • Preventing long running transactions and terminating those that exceed a preset time. By default, UI transactions...

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