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Distributed Message Service (DMS)

Communication between applications

The Distributed Message Service (DMS) enables communication between different applications, for example in order to synchronize data and processes. The DMS works like a postal service within the cloud: Senders and receivers do not need to be active at the same time. Applications that send messages in the form of JSON objects do not need to wait for acknowledgment of receipt from other applications – the DMS creates a processing queue and sends the message at a later point. This enables coordination between individual components of a cloud application, for instance in order to synchronize the status of data. This is a sensible solution for large, distributed application landscapes.

Distributed Message Service in the Open Telekom Cloud

Because the DMS works in distributed computing clusters, it is highly scalable. It offers a RESTful API, which is used to access the generated messages. The queued messages are stored on different partitions, with each partition containing three copies of the messages.

The cloud-native software can be used without any additional hardware or software resources. The DMS is available via the web console. The generated message queues are processed in sequence in accordance with the first-in-first-out principle. In addition, the DMS supports dead letter queues (in which messages that could not be delivered are stored). The costs for the DMS depend on the number of triggered API calls and queues.

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