How do nginx and tomcat work together?

The reverse proxy (Reverse Proxy) method refers to using a proxy server to accept connection requests on the Internet, then forwarding the request to the server on the internal network, and returning the results obtained from the server to the person requesting the connection on the Internet. client, at this time the proxy server appears as a server to the outside world.

It’s very straightforward here. The reverse proxy method is actually a proxy server (Nginx) responsible for forwarding. It seems to act as a real server, but in fact it is not. The proxy server only acts as a forwarder, and from the real server ( Tomcat) to get the returned data. In this way, nginx actually completes this kind of work. We let nginx listen to a port, such as port 80, but in fact we forward it to tomcat on port 8080, which handles the real request. When the request is completed, tomcat returns, but the data is not returned directly at this time, but directly Give it to nginx, and nginx will return it. Here, we will think that nginx is processing it, but in fact it is tomcat that is processing it.

Actually, after we configure the Nginx reverse proxy, the physical structure of the system may be as follows. When we access a domain name/IP address, we actually access the Nginx we configured Server, the real identity of Nginx server is just a proxy, it proxies many different real servers.

Although configuring a reverse proxy is troublesome, it is still very useful. On the one hand, it is for security reasons, and on the other hand, it is to provide application access performance. Speaking of the above method, many people may think of it again, so that static files can be processed by nginx. Yes, many places where nginx is used are used as static servers, which can easily cache static files, such as CSS, JS, html, htm and other files.

Next configure Ngin’s reverse proxy Tomcat.

Change the nginx configuration file

Change the nginx.conf file and add proxy_pass http://localhost: under the http/server/location hierarchy: 7080; Just one sentence. Be careful not to leave it out; at the end.

Restart nginx, enter the access address of nginx in the browser, and the access address of Tomcat is displayed.

Now although the nginx reverse proxy is successful, in order to better utilize the performance of nginx. We configure Tomcat's js, html, pictures and other static files to be cached on nginx, so that the access efficiency of the application can be improved.

For more Nginx related technical articles, please visit the Nginx usage tutorial column to learn!

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