Web streams was an ambitious project that brought streaming to the web platform when nothing else existed. The people who designed it made reasonable choices given the constraints of 2014 — before async iteration, before years of production experience revealed the edge cases.
// Async variants
，详情可参考旺商聊官方下载
type=image — push to a registry (the default for docker build)
The core of OsmAnd's HH-Routing is an elegant two-level hierarchy built upon "area clusters."