Service Worker 与 Resource Timing 可观测性实践

`title: Service Worker 与 Resource Timing 可观测性实践``categories: Web 开发/前端/数据管理``keywords: Service Worker,Resource Timing,性能,观测,缓存``description: 结合 Resource Timing 收集 SW 缓存命中与网络耗时指标，建立可观测性闭环，优化前端数据管理策略。`采集示例function collectResourceMetrics() { return performance.getEntriesByType('resource').map(e => ({ name: e.name, duration: e.duration, transferSize: e.transferSize })); }