System Design Technology Deep Dives
How the components you name in a system design interview actually work: the internals, the scaling behavior, when to choose each one, and the trade-offs interviewers probe. Read these after the key concepts, then apply them in the practice questions.
3 deep dives
- 01RedisRedis is the in-memory data structure store that backs caching, rate limiting, leaderboards, and locks in nearly every large system. This guide covers what makes it fast (a single-threaded event loop…Intermediate28 min#redis#caching
- 02Apache Flink: Core ConceptsApache Flink is the stream processing engine behind real-time fraud detection, IoT monitoring, and live analytics. This first half of the guide builds the core model from the ground up: every unit de…Intermediate22 min#flink#stream-processing
- 03Apache Flink in PracticeThe second half of the Flink guide covers what production and interviews actually probe: checkpoints and barrier snapshots, recovery that rewinds Kafka, the real boundaries of exactly-once, savepoint…Intermediate22 min#flink#checkpoints
Keep going
- System Design Interview (HLD) course · the full syllabus these pages belong to
- Key concepts · the vocabulary these deep dives build on
- System design practice questions · apply all of it in graded mock interviews