The Apache HTTP server is one of the most successful and common web servers used in IT industries. The reason being that it is supported by open source communities. In IT industries, the Apache HTTP server is heavily used as a frontend web server for the following reasons:
- Efficiently serves static content: Static content such as images, JS, CSS, and HTML files are more efficiently served by the HTTP server in a heavy user environment. Tomcat is also capable, but it increases the response time.
- Increase the speed by 10 percent: As compared to Tomcat, Apache serves static content 10 percent more efficiently. Integration of Apache is very helpful in the scenario of a high user load.
- Clustering: Apache is one of the most cost-effective and stable solutions to connect multiple instances of Tomcat. The biggest advantage of this feature is that the application will be online in case one of the instances goes down. Also, during deployment, we can deploy the code on one instance while the other instance is still online, serving requests to users. In simple terms, there is no downtime for the application.
- Security: Apache can enable user and host-based security. It can be done on Tomcat too. We have to decide where security needs to be enabled, either on Apache or Tomcat, based on the application's requirement
- Multiple website hosting: One of the best features of the Apache HTTP server is the capability of hosting multiple websites. This feature is also introduced for the first time in Tomcat 7. We can create 32 virtual hosts using
httpd.conf. In case you want to configure more than 32 virtual hosts, then we have to create a separatevirtual.conffile and include it inhttpd.conf(httpd.confandvirtual.confare the configuration files of the Apache HTTP server). - Modules: Apache is very flexible with reference to modules. We can compile and decompile any module based on the application's requirement. This feature is very useful in terms of application scalability and integration with third-party tools.
- Decorator: This can be defined as the application URL (Redirects and Rewrites) rule designed to serve the user request based on the application's content. The Apache web server supports both, Redirects and Rewrites rules very effectively.
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