Real World Applications of Distributed Systems

Messaging Systems - Kafka

Kafka is a distributed event streaming platform used for real-time data pipelines, messaging, and log aggregation.

Producers send messages to topics from where Consumers read messages at their own pace. This can be used in Event-driven microservices or real-time analytics.

Coordination Service - Apache Zookeeper

Apache Zookeeper is a distributed coordination service used for managing configurations, leader election, and synchronization in distributed systems. It maintains a heirarchial key-value store, where clients connect to its nodes for leader election, locking or configuration management. It uses leader-follower model.

Distributed Databases - Apache Cassandra

Apache Cassandra is a highly available, distributed NoSQL database designed for handling massive amounts of data across multiple nodes. It uses peer-to-peer architecture, stores data in columnar format and uses partition and replication as well.