HTTP
all web browsers communicate through HTTP client -> internet -> server
Server vs WAS(web application server)
- Web Server - HTTP, static content(HTML, CSS, JS, IMAGES, VIDEO), etc….
- in simple terms, it’s a server that hosts and serves content to the client, used for simple tasks like serving static files, managing client connections, and handling basic request-response. ex: NGINX, APACHE
- WAS - Web Server + dynamic content, runs application logic code to provide dynamic HTML, API (JSON), SERVLET, JSP, SPRING MVC
- WAS provides an environment where developers can build, deploy, and run applications that process and generate dynamic content. KEY FEATURES
- middleware services: security, transaction management, messaging, etc..
- Application Deployment: deploying and managing web applications.
- Scalability: load balancing and distributing application load across multiple instances.
- Database Connectivity: connect to databases to fetch and update data ex: Apache Tomcat, Jetty, Undertow, Oracle WebLogic.
- DIFFERENCE
- static (web server) vs dynamic(was)
- terminology is used interchangeably in java, we call something as WAS if it has a servlete container(although some modern exceptions exist)