Annotations

Notes on Discord's migration from Cassandra to ScyllaDB and their data modeling strategy for handling trillions of messages with strict latency requirements.

Notes on how PostgreSQL handles connections, manages memory, and coordinates background processes to provide ACID guarantees.

Notes on how Netflix uses GraphQL Federation to compose a unified API from hundreds of microservices while maintaining team autonomy and independent deployability.

Notes on how GitHub built a search engine that indexes 200 million repositories and returns results in milliseconds using custom indexing and query planning.

Notes on how Meta solved the cache invalidation problem at scale using a system called Polaris that guarantees cache consistency without sacrificing performance.

Notes on how Cloudflare scaled Kafka to handle over 1 trillion messages daily across their analytics and logging infrastructure.

Notes on an IEEE paper that proposes using mutation testing and code coverage analysis to systematically identify gaps in test suites.

Notes on Google's software load balancer that handles traffic for Search, YouTube, and other services using consistent hashing with minimal disruption.

Notes on Google's seminal 2004 paper that introduced a programming model for processing massive datasets across thousands of commodity machines.