Three Knives

Apr 10, 2026 · Backend Development

From Passive Acceptance to Active Defense: smart-mqtt v1.5.5 Introduces Connection Flapping Protection

smart-mqtt v1.5.5 adds a FlappingDetector that uses a sliding‑time‑window, high‑performance concurrent design, and automatic ban logic to identify clients exceeding a configurable connection threshold, automatically ban them for a set period, and thus protect the broker from connection‑storm overloads.