VasSonic can request the index html with custom url connection to request resource in advance or parallel to avoid waiting for the view initialization. According to VasSonic Specification obeyed by client and server, VasSonic can cache html cleverly. According to this, VasSonic request fewer data by incremental updating templates and data, the websites are faster and feel more like a native application. It also enhances the user experience and increases click rate, retention rate, and other indicators.