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Furthermore, links can be created with an alternative name to topics, allowing topic renaming in virtual clusters, but also linking topics between virtual clusters in order to achieve more complex use cases, like sharing topics between virtual clusters to provide readable views, or implement aggregation use-cases.

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Creating Topics in Virtual Clusters

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• Create a topic with a user that isn’t part of a virtual cluster: everything stays the same as it is currently.
• Create a topic with a user that is already assigned to a virtual cluster: topics that are created within a virtual cluster would have generated names, where one part continues to be the user-given name while another part is unique. This would be implemented by prefixing the topic name with the UUID of the topic to the topic. This way we would form topic names in the UUID.topicname form, for instance e58ed763-928c-4155-bee9-fdbaaadc15f3.mytopic. While the UUID takes a few characters and leaves less for users to spend, this is needed to avoid conflicting names between virtual clusters. Links would also have names with the user-given topic name being the default, to be able to identify them in a user-friendly way. This somewhat compensates the loss on available characters for topic names but also links having names would accommodate use-cases when users share topics between virtual clusters as they can opt to use a different name if they conflict in different virtual clusters.

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