Dive into the world of distributed systems with this comprehensive 4-hour 30-minute course. Explore essential concepts such as multiprocessing over TCP connections, concurrent requests, and unique keys in web applications. Learn about distributed transactions in microservices, techniques to prevent double booking and race conditions, and the publish-subscribe architecture. Understand database sharding, Apache Kafka, and various caching techniques. Analyze real-world scenarios like the Amazon Kinesis US East-1 outage and delve into the complexities of distributed transactions, including the two-phase commit protocol.