HTTP/2 Server Push
HTTP/2 Server Push is a performance optimization feature of the HTTP/2 protocol that allows a server to proactively send resources (e.g., CSS, JavaScript, images) to a client before the client explicitly requests them. This reduces latency by eliminating the need for additional round-trip requests, as the server can predict which resources will be needed based on the initial request. It is commonly used to speed up web page loading by pushing critical assets alongside the HTML response.
Developers should use HTTP/2 Server Push when building high-performance web applications where reducing page load times is critical, such as e-commerce sites, media-rich pages, or single-page applications. It is particularly effective for pushing static assets like stylesheets, scripts, or fonts that are essential for rendering, as it minimizes the number of sequential requests and leverages the multiplexing capabilities of HTTP/2. However, it should be implemented carefully to avoid over-pushing resources, which can waste bandwidth and degrade performance.