Single thread model

Question

If a servlet implements interference for a single-thread model, how does the servlet container ensure that servlets only process one request at a time? Even the single-thread model interface also has no methods. Thanks.

Answer 1

The servlet container creates a pool of servlet instances and keeps track of which instances are currently "in use". If all instances are “used” when a new request arrives, the container can either wait for the existing one to become free or create a new instance to process the request.

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Answer 2

, SingleThreadModel, . singlethreadmodel, .

Answer 3

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http://java.sun.com/j2ee/1.4/docs/api/javax/servlet/SingleThreadModel.html