Design Microservices Architecture with Patterns and Principles - Design Instagram Database Architecture

The video tutorial explains Instagram's database architecture, which utilizes both Post SQL and Cassandra systems. Post SQL is used for relational data, employing a master-slave setup to manage user information and relationships. Cassandra, a NoSQL database, is used for user feeds and messaging, featuring a masterless architecture that allows for efficient data distribution and synchronization. The tutorial highlights the benefits of using both databases in a polygode persistence model, optimizing data management and performance across Instagram's platform.

Describe the masterless architecture of Cassandra used in Instagram.

What is the significance of sharding in Cassandra for Instagram's database architecture?