如果未在缓存中发现这样的项，则会将请求转发到服务提供者，服务提供者将随后返回路由回消息请求者的响应。
If it does not find such items within the cache, it will forward the request to the service provider which will, in turn, return a response that is routed back to the message requester.
由于所有消息都按顺序处理，应用程序流不会被回调和中断分离，因此更容易调试。
Easier to debug because the messages are all handled sequentially and the flow is not disjointed by callbacks and interrupts.
侦听器端口线程使用的会话将在完成消息处理(执行或回滚)后释放。
Sessions used by the listener port thread will be released after they have processed a message (it commits or rolls back).
在回调中，将从消息中提取信息并用于启动WPS工作流，该工作流是运行在WPS服务器上的另一个SCA应用程序的一部分。
In the callback, information is extracted from the message and is used to start the WPS workflow, which is a part of another SCA application running in the WPS server.
都提供了相应的方法来告知发送端点应该在传输回发通道不可用的情况下“缓存”消息。
Both provide a means to tell a sending endpoint that it should "buffer" messages when the transport back channel is not available.
然后构造函数打印出一条警告消息指明没有回调函数，因为列表是不可变的，所以我们没有机会用一个新的值来替代现有的回调函数列表。
The constructor then prints a warning message that there are no callbacks, since lists are immutable and there is no way to replace the callback list val with a new one.
在异步调用过程中，当目标组件发生系统异常时，消息会回滚到传入目的地，并被重新提交。
When a system exception occurs at the target component during an asynchronous invocation, the message is rolled back to the incoming destination and redelivered.
Axis2的早期版本中有一个叫做Callback的类，它可以被用来作为异步式消息的回调机制，或是一种轮询(polling)机制。
In earlier versions of Axis2 a class named, callback, which could be used as the callback mechanism for asynchronous messages or as a polling mechanism.
由于所有消息都在代码内顺序处理，回调没有必要打断应用程序流，因此竞争条件(race condition)更少。
Fewer race conditions because the messages are all handled sequentially in the code with no need for callbacks interrupting the flow.
这就允许此消息的发送方请求仅通过回发通道发送与指定的WS - RMSequence相关的消息。
This allows for the sender of this message to request that only messages related to the WS-RM Sequence specified be sent on the back channel.
然后，设置另一个会话变量（更新消息），并将用户重定向回index.php页面。
Then another session variable is set (the update message), and the user is redirected back to the index.php page.
与wsrm：Address元素不同，此元素限制了可以通过回发通道发送的消息类型。
Unlike the WSRM: Address element, this restricts the types of messages that may flow on the back channel.
原来赵云巡哨方回，听得这个消息，吃了一惊，只带四五骑，旋风般沿江赶来。
He had just returned from patrol, and once he heard the news, although astonished, he dashed down to the river bank like a whirlwind, with only 4 or 5 cavalry followed.
如果试图回滚以查找某个人的消息的内容，这种方式就会显得十分笨拙，特别是当几个人几乎同时在线，并且每个人都在抢时间编写消息的时候，这个问题就更为突出。
It gets to be cumbersome to try to scroll back to find out what a person said, especially when several people are on online almost at the same time, each one competing for time to write a message.
每条消息连同异步回调侦听程序一起被发布到驻留在业务层的消息总线。
Each message is published, along with an asynchronous callback listener, to a message bus residing on the business tier.
样例服务对您给予的消息作出回显，但这种回显是反向的。
The sample service echoes the message that you give it, but backwards.
如果接收其中的某个消息失败，我们会标记全局事务进行回滚，然后等候5秒。
If the receipt of one of the messages fails, we mark the global transaction for rollback and then sleep for 5 seconds.
重播攻击是这样一类攻击：它可以拦截有效的消息，然后再将该消息重播回服务。
A replay attack is where a valid message is intercepted and replayed back to the service.
在另一封邮件中，对气候怀疑者的死亡做了，他似乎做出了“奇怪的是这是一个好消息！”这一回应。
In another email, he appeared to respond to the death of a climate sceptic with the words "in an odd way this is cheering news!".
如果收到的回调表明处理WS1消息时出错，聚合应用程序也可能终止调用。
When a received callback indicates errors processing the WS1 message, the converged application may also tear down the call.
应用程序消息通过一个简单的回调机制异步传递，并且只以字节数组有效负载的格式提供。
Application messages are delivered asynchronously through a simple callback mechanism and are provided only in byte array payload format.
清单1回应一条消息作为脚本的开始，并且设置最小限度的PATH变量。
Listing 1 echoes a message as the script begins and sets a minimal PATH variable.
要处理消息和事件，必须创建一个回调处理程序，并且必须将其注册到MQTT客户机。
To process messages and events a callback handler must be created and registered with the MQTT client.
接收此消息的端点将随后可以使用传输特定的回发通道自由地发送以此URI为目标的任何消息。
The endpoint that receives this message would then be free to use the transport-specific back channel to send any message that is targeted to this URI.
在此场景中，消息直接在响应中回显。
In this scenario the message was simply echoed in the response.
对于MQ服务，当这个事务回滚时，这条消息就不会写入队列中。
For the MQ service, when the transaction was rolled back, the message was not committed to the queue.
在此场景中，消息仅在响应中回显。
In this scenario, the message was simply echoed in the response.
仅DB 2发回所请求的信息时，会将其放入消息队列中。
When the requested information from only DB2 arrives, it's put in a messaging queue.
消息被传递给 WPS上的队列后，MDB的回调方法将被激活。
Upon a message delivery to the queue in WPS, the MDB's callback method is fired.
客户机代码将轮询输出队列以获得响应，或等待响应消息交付时的回调通知。
The client code would either poll the output queue for the response or wait for some kind of call-back notification when the response message has been delivered.
应用推荐