所有这一切都依赖于数据库服务器和管理连接池的中间件的可伸缩性。

All this depends on both the scalability of the database server and the middleware managing the connection pool.

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例如，常见的可伸缩性问题，包括同步问题和数据库连接，直到负载测试的时候还没有表露。

For example, common scalability problems, including synchronization issues and database contention, do not surface until load tests.

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例如，我们可以使用通过JMS的SOAP，以实现比通过HTTP的SOAP的异步连接的可伸缩性更好的异步连接。

For instance, we could have used SOAP over JMS, allowing for a more scalable asynchronous connection than that available with SOAP over HTTP.

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