Session Tracking in Web Services
Previous Section described the advantages of using session tracking to maintain client state in-formation so you can personalize the users’ browsing experiences. Now we’ll incorporate session tracking into a web service. Suppose a client application needs to call several meth-ods from the same web service, possibly several times each. In such a case, it can be bene-ficial for the web service to maintain state information for the client, thus eliminating the need for client information to be passed between the client and the web service multiple times. For example, a web service that provides local restaurant reviews could store the cli-ent user’s street address during the initial request, then use it to return personalized, local-ized results in subsequent requests. Storing session information also enables a web service to distinguish between clients.
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