How to use the HTTP/2 protocol to improve page resource loading efficiency?

When it is necessary to improve page resource loading efficiency, the HTTP/2 protocol achieves optimization through core features such as multiplexing and header compression. Based on the binary framing layer, it allows parallel transmission of multiple resources over a single TCP connection, reducing the overhead of connection establishment and maintenance.

Specific optimization methods include: - Multiplexing: Simultaneously transmitting resources such as HTML, CSS, and JS within the same connection, avoiding the head-of-line blocking problem of traditional HTTP/1.x and improving parallel loading capability. - Header compression: Compressing request header fields through the HPACK algorithm to reduce the transmission volume of repeated header information, especially suitable for frequent request scenarios. - Server push: The server can actively push critical resources (such as CSS) to the client cache without waiting for the browser to request after parsing HTML, shortening the first load time. - Priority control: Allowing setting loading priorities for different resources to ensure that critical resources (such as above-the-fold content) are transmitted first, optimizing user experience.

In practical applications, it is recommended to ensure that the server supports HTTP/2 and enables TLS (since most browsers only support HTTP/2 over HTTPS), while reasonably configuring resource priorities and server push rules, combining strategies such as resource compression and lazy loading, and continuously monitoring loading performance to maximize efficiency.