Kafka - Partitions đī¸
Description đ
Topics are split into partitions. Messages in each partition are ordered, and immutable. Each message within a partition is assigned a sequential id called the offset. Offsets are used to identify the position of a message within a partition. Data is only kept for a limited time (default is 1 week) and is automatically deleted to prevent data from growing indefinitely. Offsets are never reused, even if data is deleted. Order is guaranteed within a partition, but not across partitions. Data is assigned randomly to a partition unless a key is provided. If a key is provided, the same key will always be assigned to the same partition. This allows for ordering of related messages. You can have as many partitions per topic as you want.