Book Image

Troubleshooting NetScaler

By : Raghu Varma Tirumalaraju
Book Image

Troubleshooting NetScaler

By: Raghu Varma Tirumalaraju

Overview of this book

NetScaler is a high performance Application Delivery Controller (ADC). Making the most of it requires knowledge that straddles the application and networking worlds. As an ADC owner you will also likely be the first person to be solicited when your business applications fail. You will need to be quick in identifying if the problem is with the application, the server, the network, or NetScaler itself. This book provides you with the vital troubleshooting knowledge needed to act fast when issues happen. It gives you a thorough understanding of the NetScaler layout, how it integrates with the network, and what issues to expect when working with the traffic management, authentication, NetScaler Gateway and application firewall features. We will also look at what information to seek out in the logs, how to use tracing, and explore utilities that exist on NetScaler to help you find the root cause of your issues.
Table of Contents (17 chapters)
Troubleshooting NetScaler
Credits
Notice
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Compression


HTTP Compression, like caching, is a best practice that should be implemented in all Web Application deployments. Even with the fast links of today, there are performance benefits to be had, as compression can reduce size upwards of 70 percent. This size reduction in TCP terms means fewer packets and reduced round trip times.

Let's start by looking at what kind of content should and shouldn't be compressed:

  • Content that should be compressed:

    • Any response that is text based is a good candidate for compression. HTML, CSS, JS, and XML, which are all items that you find on most web pages, fall into this category

    • MS Office documents

  • Content that shouldn't be compressed:

    • Any response that is already compressed should not be compressed; this only adds to the size of the response.

    • Images and other binary data should not be compressed for the same reason. Most image formats on the web are already compressed.

The NetScaler's default compression behavior

Go to the Compression section, click on policies...