System Design Interview - Notification Service

Topics mentioned in the video:
- Functional (create topic, publish message, subscribe to a topic) and non-functional (high scalability, high availability, high performance, durability) requirements.
- High-level architecture of a notification service.
- FrontEnd service host components (reverse proxy, local cache, logs and metrics agents).
- Metadata service, distributed cache, consistent hashing ring, gossip protocol.
- Storage for messages: SQL/NoSQL database, in-memory store, distributed message queue, stream-processing platform.
- Message sender service, thread pool, semaphore.
- Duplicate messages, retry policy, message order, security, monitoring.

Inspired by the following interview questions:
Amazon (https://www.careercup.com/question?id=5167925411446784)
Flipkart (https://www.careercup.com/question?id=5719043099066368)
Microsoft (https://www.careercup.com/question?id=5139053713293312)
Uber (https://www.careercup.com/question?id=5767908358094848)

Видео System Design Interview - Notification Service канала System Design Interview