For example, the implementer could retrieve the requestor's user id from the security context on each request and use that to identify the target calculator total.
例如，实现人员可以从每个请求中的安全性上下文里检索请求者的用户ID，使用它来确定目标计算器总数。
Security role references (represented by org.apache.pluto.om.common.SecurityRoleRef instances) determine whether a user is mapped to a specified role for each portlet request.
安全角色引用（由 org.apache.pluto.om.common.SecurityRoleRef 实例表示）将决定是否为每个 portlet 请求把用户映射为指定角色。
Of course, if you use per-user and per-instance SSH keys, then Pageant can only provide the key for the second and subsequent connections to each instance - but that's the cost of tighter security.
当然，如果对于每个用户和每个实例使用不同的ssh密钥，Pageant只能为对每个实例的第二次和后续连接提供密钥，但这是实现更高的安全性要付出的代价。
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