Kafka - Replicas

Kafka Commit Log Messaging Process

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Replicas of a partition among the brokers.

All writes to the partition must go through the partition leader. The replicas are kept in sync by fetching from the leader.




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Kafka Commit Log Messaging Process
Kafka - (Partition|Write) Leader

A leader handles all read and write requests for a partition while the followers passively replicate the leader. Each server acts as a leader for some of its partitions and a follower for others so load...
Kafka Commit Log Messaging Process
Kafka - Broker (Kafka Server)

Manages list of partition Acks the message (Producer doesn't need to resend the data} Commits the message (Consumer can now read it) Replicate data Durability Guarantees (min.insync.replicas &...
Kafka Commit Log Messaging Process
Kafka - Commit

Messages written to the partition leader are not immediately readable by consumers regardless of the producer’s acknowledgement settings. When all in-sync replicas have acknowledged the write, then...
Kafka Commit Log Messaging Process
Kafka - Fault Tolerance

in Kafka Leader data stored in zookeeper In-Sync replicas number (mini.insync.replicas) determine the number of replicas per partition which have to be in sync.
Kafka Commit Log Messaging Process
Kafka - Partition

in Kafka Each partition is an: ordered, immutable sequence of records that is continually appended to—a structured commit log. The records in the partitions are each assigned a sequential...
Kafka Commit Log Messaging Process
Kafka - Producer (Write / Input)

A Kafka producer is an object that consists of: a pool of buffer space that holds records that haven't...
Log Anatomy
Kafka - Topic

The Kafka cluster stores streams of records in categories called topics. A topic is also known as: a category or feed name. A topic can have zero, one, or many consumers that subscribe to the data...
Kafka Commit Log Messaging Process
Kafka - Zookeeper

Zookeeper in Kafka. It is one of the Kafka service. List of broker List of topics List of replicas of topics Consumer offset Leader election algorithm Clean up Zookeeper data folder...



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