# How Rendezvous Messages are Imported

The EMS server connects to the Rendezvous daemon as any other Rendezvous client would. Messages received from the Rendezvous daemon are stored in Rendezvous queues, then are dispatched to callbacks. The EMS server creates JMS message copies of the Rendezvous messages, and begins processing them as EMS messages. Transports determine how messages are imported.

Rendezvous messages that are imported through a transport are held in queues specific to that transport. Each transports is associated with a different Rendezvous queue, which holds as many Rendezvous messages as necessary. The number of pending messages in the queue will grow if the rate of incoming Rendezvous messages is greater than the rate at which the EMS server is able to process the corresponding EMS messages.

Depending on the import delivery mode defined for the transport, the EMS messages will be persisted on disk, which increases the likelihood of backlog in the Rendezvous queues, and which in turn results in a EMS process memory growth. This memory growth is not accounted for in any of the EMS server statistics.

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