A vertical feed that picks each next video from what the viewer did seconds ago: labels at the swipe, multi-source retrieval, a multi-task ranker, online training and a fair start for new creators, as three one-hour boards.
Machine-learning engineers designing data, training and model systems.
Your approach: Explain the data, learning or model lifecycle in the brief. Support relevant quality and operating targets with evidence.
Design a Short-Video Feed like TikTok. A vertical feed that picks each next video from what the viewer did seconds ago: labels at the swipe, multi-source retrieval, a multi-task ranker, online training and a fair start for new creators, as three one-hour boards. Work from the scoping questions below. State assumptions for any unspecified load, guarantee or target, then trace your design end to end. Explain one difficult case and a credible alternative; the worked example is a reference, not a required implementation.
Resolve the scoping questions for a Short-Video Feed like TikTok. Separate stated behavior from assumptions, and identify what is outside your design.
Declare relevant volume, latency, freshness, quality or cost targets with units. Show calculations or an evaluation plan that can test them; unspecified targets are your assumptions, not hidden pass criteria.
Explain how your guarantees hold in a difficult case relevant to this subject. Address: Cold start? Rules?
Identify users, required behavior and exclusions. Answer: Which surface? What is success?
Define the information owned by the system and the inputs, outputs and errors at its boundaries. Resolve: Scale? How fast must it react?
Estimate the dominant workload and resource demand with units and explicit assumptions. For a learned system, also state how quality is measured and what data is available.
Draw or describe the responsibilities needed for a Short-Video Feed like TikTok. Trace a representative request, event or job from its input to a visible result; identify durable state owners.
Walk through a difficult case step by step, including detection and recovery. Consider: Latency? Labels? Cold start? Rules?
Compare a credible alternative using your chosen workload and guarantees. Explain a remaining risk, a signal to watch and when you would change the design.