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• each partition is ordered
• each message with a partition gets an incremental id, called offset.
• offsets are only relevant for a particular partition
• order is guaranteed only in a partition (not across partitions)
• data is assigned to a random partition unless a key is provided
• you can have as many partitions per topic as you want
• specifying a key, ensures that your message is written to the same partition (which ensures order).

Installation on Kubernetes

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