The offset is a unique identifier of a record within a partition. It denotes the position of the consumer in the partition. Consumers can read messages starting from a specific offset and can read from any offset point they choose.
* Partition offset has a unique sequence id called as offset.
* Each partition should have a partition offset.
Topic can also have multiple partition logs like the click-topic has in the image to the right. This allows for multiple consumers to read from a topic in parallel.
