KeyPoints in Kafka Partitions/Offsets

Once data is written to a partition it cannot be changed(immutability).

Data is kept only for a limited amount of time (default is 1 week -configyurable) then it disappears.

Offset only have a meaning for a specific partition.

Eg: Offset 3 in part 0 doesnt represent the same data as offset 3 in partition1.

Offsets are not reused even if previous message is deleted.

Order is guranteed only within a partition(not across partitions).

Data is assigned randomly to a paprtition unless a key is provided .

You can have as many partitions as you want .

Edit this page on GitHub