Book Image

Implementing NetScaler VPX??? - Second Edition

By : Marius Sandbu
Book Image

Implementing NetScaler VPX??? - Second Edition

By: Marius Sandbu

Overview of this book

With a large demand for responsive websites and availability of services, IT administrators are faced with an ever-rising need for services that are optimized for speed. NetScaler VPX is a software-based virtual appliance that provides users with the comprehensive NetScaler feature set. Implementing apps and cloud-based services is much easier with its increased service performance and integrated security features. This book will give you an insight into all the new features that NetScaler VPX™ has to offer. Starting off with the basics, you will learn how to set NetScaler up and configure it in a virtual environment including the new features available in version 11, such as unified gateway and portal theme customization. Next, the book will cover how to deploy NetScalar on Azure and Amazon, and you will also discover how to integrate it with an existing Citrix infrastructure. Next, you will venture into other topics such as load balancing Microsoft and Citrix solutions, configuring different forms of high availability Global Server Load Balancing (GSLB), and network optimization. You will also learn how to troubleshoot and analyze data using NetScaler's extensive array of features. Finally, you will discover how to protect web services using an application firewall and will get to grips with other features such as HTTP, DOS, and AAA.
Table of Contents (15 chapters)
Implementing NetScaler VPX™ Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Caching


By using caching, we allow NetScaler to store frequently accessed objects in its cache area, which uses the RAM of the appliance as storage. Note that the MPX utilizes the SSD drive as the cache drive. This allows NetScaler to serve clients directly without requiring a trip to the backend servers. This offloads the backend servers and improves the overall performance of the services.

Now, caching is not something new; it is used everywhere. Most of the common web browsers have some sort of a local cache; many of the ISP vendors also have some sort of caching involved for frequently accessed services. Also, it is important to note that this feature requires a license to be in place, either a NetScaler Platinum license, or an add-on to Enterprise. Note that the caching feature is available only when using the HTTP protocol, and it can cache the following two types of data content:

  • Static data: This includes CSS files, JavaScript files, images, static HTML pages, and so on. Static data...