topic is a category or feed name to which messages are published by producers and from which messages are consumed by consumers.
a broker is a server that hosts and manages Kafka topics, storing and distributing data partitions across multiple brokers in a Kafka cluster.
partitions are horizontal slices of topics that allow data to be distributed across multiple brokers for scalability and parallel processing of messages by consumers.
+---------------+
| Broker 1 |
| |
| - Topic A |
| - Partition 0
| - Partition 1
| - Partition 2
+---------------+
|
|
v
+---------------+
| Broker 2 |
| |
| - Topic A |
| - Partition 3
| - Partition 4
| - Partition 5
+---------------+
|
|
v
+---------------+
| Broker 3 |
| |
| - Topic B |
| - Partition 0
| - Partition 1
+---------------+
- There are three brokers (Broker 1, Broker 2, Broker 3), each hosting one or more topics.
- Each topic (Topic A, Topic B) consists of one or more partitions, distributed across multiple brokers.
- Partitions within a topic allow for parallel processing and fault tolerance, with each partition being hosted on a single broker.
This diagram illustrates the distributed nature of Kafka topics and partitions across multiple brokers, allowing for scalability, fault tolerance, and efficient data processing.