If the credentials of the users are valid, the front end will receive a session id that can be used to track the users through the site or retrieve other account information.

如果用户的凭证有效，前端将收到一个会话id，可以用它在站点中跟踪用户或检索其他的账号信息。

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We can track the cached state of the client session by using a client cookie. Listing 1 puts it together

通过使用一个客户机 cookie，我们可以跟踪客户机会话的缓存状态。

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Whenever a user logs into an administrative client (either the admin console or wsadmin), a different workspace session is used to track the changes.

每当有用户登录到一个管理员客户端(admin控制台或wsadmin)时，就会用一个不同的工作空间会话来跟踪变化。

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For the track Vegetables, session musicians harmonised on various foods of the earth, including a carrot munched on by a passing Paul McCartney.

BBC: Brian Wilson

For example, during a session of track and field, instead of viewing only a single feed that moves from event to event, a user can choose to watch a stream dedicated to a specific event, such as the long jump or javelin.

ENGADGET: NBC's 2012 London Olympics second screen and streaming apps for Android and iOS launch today

As the track dried in the second session, Brawn opted not to put their drivers on intermediate tyres, and while Barrichello just made the cut for the top-10 shootout, Button missed out.

BBC: Button fears title blow in Brazil