Introduction

Topic

Topics are like table, provides scalability
Each topic has 1 or more than 1 partition
Each partition is an ordered, immuatable sequence of records
Each record is assigned a sequential number called offset
Each partition is independent of each other
Ordering is guaranteed only at the partition level
Partition continously grows as new records are produced
All the records are persisted in a distributed commit log in the file system where Kafka is installed