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.
通常有必要在组织的内部和外连接到现有的中间件或旧的企业系统。
Often there is a necessity to connect to existing middleware or legacy enterprise system within an organization or outside.
作为中间件，MOMs可以连接旧有系统以及新系统。
As middleware, MOMs can connect legacy systems as well as newer ones.
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