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This article presents Alibaba Cloud's open‑source big‑data team's enhancements to Flink CEP, covering its core concepts, typical use cases, dynamic multi‑rule loading via FLIP‑200, extended CEP SQL syntax, performance optimizations, and real‑world risk‑control scenarios.
The article presents a pure front‑end Complex Event Processing framework that captures user actions, uses an NFA‑based engine to evaluate dynamic strategies, synchronizes data across pages via local storage, and delivers millisecond‑level real‑time user reach on Mini‑program, Web, and Weex platforms.
The article details Xianyu’s real‑time complex event processing system, which abstracts diverse business scenarios—such as activity coupons, price‑drop alerts, rental suggestions, and promotional offers—into a rule‑driven pipeline comprising log collection, a Blink‑based DSL EPL engine, and configurable result delivery, enabling feature rollout in half a day with ~10‑second latency.