← CatZep/Engineering Guides/System Design
Video, cloud storage, and collaborative editing.
Learn the reason behind each component
3 independent guides. Each includes local concept explanations, a correctness contract, a worked failure trace, and a runnable Python learning model.
Read in this order: requirements → concepts → data flow → concurrency and failure behavior → sizing → worked example. Explain what can fail before choosing a technology.
3 guides
Explain how concurrent edits converge while separating a two-operation demo from a complete collaboration protocol.
Operational Transformation · Conflict-free Replicated Data Types · Sequence numbers and replay cursors · Idempotency keys · Presence and failure detection · TombstonesSynchronize immutable file versions while keeping metadata publication, blob lifetime, and conflicts correct.
Resumable and multipart uploads · Content-defined chunking · Content addressing and garbage collection · Optimistic concurrency and compare-and-set · Cache-aside and invalidation · Transactional outboxTurn a validated upload into compatible streaming renditions through a recoverable dependency graph.
Resumable and multipart uploads · DAG scheduling · Adaptive bitrate streaming · Content addressing and garbage collection · Transactional outbox · Backpressure and load sheddingNo guide matches. Try a broader concept such as replication or retries.
Download the Python concept models · Python 3.10+, no packages required.
Student clarity and correctness review · 19 October 2026