Port 8080 is an alternative to port 80 and is used primarily for http traffic. It is named 8080 for its correlation to 80.
Port 8080 is commonly used as proxy and caching port. It is also above the service port range. Port 8080 also can run a Web server as a nonroot user. Other assignments for port 8080 include Apache Tomcat, an M2MLogger and a Web GUI. If port 8080 is used in a Web address, it requires a default port override to be able to connect to port 8080 in place of the typical port 80.