Book Image

Mastering NGINX - Second Edition

By : Dimitri Aivaliotis
Book Image

Mastering NGINX - Second Edition

By: Dimitri Aivaliotis

Overview of this book

NGINX is a high-performance HTTP server and mail proxy designed to use very few system resources. But despite its power it is often a challenge to properly configure NGINX to meet your expectations. Mastering Nginx is the solution – an insider’s guide that will clarify the murky waters of NGINX’s configuration. Tune NGINX for various situations, improve your NGINX experience with some of the more obscure configuration directives, and discover how to design and personalize a configuration to match your needs. To begin with, quickly brush up on installing and setting up the NGINX server on the OS and its integration with third-party modules. From here, move on to explain NGINX's mail proxy module and its authentication, and reverse proxy to solve scaling issues. Then see how to integrate NGINX with your applications to perform tasks. The latter part of the book focuses on working through techniques to solve common web issues and the know-hows using NGINX modules. Finally, we will also explore different configurations that will help you troubleshoot NGINX server and assist with performance tuning.
Table of Contents (20 chapters)
Mastering NGINX - Second Edition
About the Author
About the Reviewer
Directive Reference
Persisting Solaris Network Tunings

Combining with memcached

Depending on the frequency of clients accessing the e-mail services on your proxy and how many resources are available to the authentication service, you may want to introduce a caching layer into the setup. To this end, we will integrate memcached as an in-memory store for authentication information.

NGINX can look up a key in memcached, but only in the context of a location in the http module. Therefore, we will have to implement our own caching layer outside of NGINX.

As the flowchart shows, we will first check whether or not this username/password combination is already in the cache. If not, we will query our authentication store for the information and place the key/value pair into the cache. If it is, we can retrieve this information directly from the cache.


Zimbra has created a memcache module for NGINX that takes care of this directly within the context of NGINX. To date, though, this code has not been integrated into the official NGINX sources.

The following...