Systems · Week 4
Week 4: Storage primitives and agents
Bitcask dictionaries, object stores, RAG grounding, and research agent budgets.
Week 4: Storage primitives and agents
Bitcask dictionaries, object stores, RAG grounding, and research agent budgets.
Outcomes
- Explain the failure drill for each lesson in this week without notes.
- Complete linked labs where present and keep a short metric log.
- Tag each system with the pattern cards you actually used.
- Dictionary without a DB Append-only log + sparse index (Bitcask-style) for durable point lookups.
- Mini object store Immutable content-addressed objects on local disk as a teaching model.
- Deep research agent loops Planner/critic loops with budgets, memory ranking, and stop conditions.
- RAG grounding Retrieval that constrains generation — failure modes when context is wrong or empty.