I am sure, you must be aware of the concept that, traditionally HTTPSession is container specific i.e the container will create session and provide the session ID to the application. How sticky session works and how the sessions communication happens in traditional web applications.How session management works on application servers?.Also we may need to understand the following additional things. There is a natural question that might arise “ Why Spring Session? What are benefits of Spring Session?” To get answer for these question, we need a basic understanding of how HTTPSession works and how the Session management happens in traditional application. RESTful APIs – Session API allows providing session ids in headers to work with Restful APIs.multiple authenticated accounts similar to Google). Multiple Browser Sessions – Spring Session supports managing multiple users’ sessions in a single browser instance (i.e.Clustered Sessions – API makes it trivial to support clustered sessions without being tied to an application container specific solution.HttpSession – allows replacing the HttpSession in an application container (i.e.Here are benefits of using Spring Session API. JDBC Session – Relation database based session support. ![]() ![]() Session Data Redis – Support for Redis based session management.On a high level, Session API provides following modules. WebSession – Replacing the Spring WebFlux’s WebSession in an application container neutral way.WebSocket – Provides the ability to keep HttpSession alive with WebSocket messages.HttpSession – Session API works by replacing the HttpSession with container neutral way by providing session ID in headers.In the example, we have created four files.Spring Security Authorization – How authorization work The following programs shows how to implement session tracking. Implementation of Session Tracking in Java The method first invalidates the session, then unbinds the object associated with the session. When the client prefers not to join the session or if the client does not know already about the session, then the method returns true otherwise, false. The last time at which the session is accessed is being returned by this method. The method returns the unique id, which is unique. The time at which the session is created is being returned by this method. The method returns a session if the session is already present otherwise, a new session is created then returned. If the session is not present, the method created a new session based on the Boolean value create, which is passed as an argument to the method. The method fetches the session that is associated with the request. Public HttpSession getSession(Boolean create) Methods of HttpSession Interface Method Name The unique id can be stored in a request parameter or in a cookie. The unique id is used to identify a user. The servlet container uses the HttpSession interface to connect to the server by creating a unique id for each request. User A and User B both are requesting to connect to a server. ![]() The following diagram shows the working of the HttpSession interface in a session. Binding objects to the session, hence allowing the information about a user to be persistent across the multiple connections.Manipulate and view the information about any session, such as the creation time, the session identifier, and the last accessed time.The HttpSession interface facilitates the servlets to: In fact, the Java servlets use the HttpSession interface to establish a connection between the HTTP server and the HTTP client. The Java servlets provide the HttpSession Interface that gives a way to spot a particular user among multiple page requests or to keep the information about that user. The size of an individual cookie cannot exceed 4kb. Therefore, if someone on the client-side disables the cookies, then the web application can never make use of the cookies.ģ) An individual cookie cannot contain a lot of information. The disadvantages of the cookies are:ġ) Only the textual information can be kept by cookies.Ģ) Cookies are browser-dependent. However, cookies are not effective for tracking the session. It is saved by the browsers in the client system. ![]() It sent by the server to the client's browser. The cookies have information in the form of key-value pair. To accomplish session tracking in the Java, one of the most commonly used techs is cookies. Session Tracking in Java is used to tackle this problem with the help of servlets. However, the problem is, in HTTP protocol, the state of the communication is not maintained, i.e., HTTP is a stateless protocol. Those two systems can have a peer-to-peer or client-server relationship with each other. In the world of the web, a session is the amount of time in which any two systems interact with each other.
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