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// to you under the Apache License, Version 2.0 (the
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// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
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package org.openqa.selenium.grid;
/**
* The Selenium Grid is composed of a number of moving pieces, all of which are designed to be used
* either locally or across an HTTP boundary.
*
* Sitting at the front of the system is the {@link org.openqa.selenium.grid.router.Router}. This
* is responsible for looking at incoming requests and routing them to the correct location. In the
* case of a New Session command, it
* will be sent to the {@link org.openqa.selenium.grid.distributor.Distributor}.
*
*
The {@code Distributor} has a number of {@link org.openqa.selenium.grid.node.Node}s associated
* with it, each of which is capable of running one or more {@link
* org.openqa.selenium.grid.data.Session}s which may or may not be running in memory. Each {@code
* Node} should register with a single {@code Distributor}.
*
*
When a new session is started, the {@code Node} tells the {@link
* org.openqa.selenium.grid.sessionmap.SessionMap} where the {@code Session} (identified by its
* {@link org.openqa.selenium.remote.SessionId} can be located (typically the URL of the server on
* which the {@code Node} is running. Conversely, when the session comes to an end, the {@code Node}
* is responsible for ensuring that the session is removed from the {@code SessionMap}.
*/