Composable Event Recommendation Campaign Engine (Flexible Filters + Ranking + Fallback)
Asked at StubHub · Coding Questions · Difficulty: Hard
Implement a **flexible event recommendation framework** to support different marketing campaigns by **reusing and composing** behaviors. Do not hardcode each campaign with ad-hoc if/else logic. Design extensible components (e.g., Filters, Rankers, Scorers, Pipeline/Strategy).
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