HTML has always supported streaming. The server doesn't need to build an entire page in memory before sending it to the browser. It can send the initial HTML first, then send more chunks as each chunk is ready. The browser parses those chunks and displays the page in order. This is one reason why HTML seems fast. But traditional HTML streaming has a strict rule. The HTML comes in the order of the document. If the browser gets the header first, then the sidebar, and finally the main content, it parses those chunks in that order. If a slow database query blocks a chunk of the page early on, the next chunk often has to wait until it's ready on the server. JavaScript frameworks have been solving this problem for years. Server-rendering frameworks handle shell, suspense boundaries, loading state, and late content streaming. Some frameworks use inline script to patch the existing DOM. Libraries like HTMX allow developers to update parts of a page with server-generated HTML.…