// the find
arpitbbhayani/flasksr
Make flask pages load faster and better by streaming partial HTTP Responses :boom:
FlaskSR is a small Flask extension that streams partial HTTP responses to the browser, letting the page start rendering before the server finishes building it. It's for Flask apps where slow backend calls (DB queries, API fetches) are visibly blocking the first paint. The idea is sound — Facebook pioneered this with BigPipe — but the execution here is minimal.
The LayoutSR mode is the interesting part: it lets you send high-priority chunks (nav, above-the-fold content) before slow chunks finish, which is the actual win over naive top-down streaming. Works with Jinja templates and doesn't require client-side JS, so it's transparent to crawlers. The API is simple enough to retrofit into an existing Flask view without restructuring everything.
Last commit was 2022 and the project has 11 forks and no recent activity — this is effectively abandoned. The GitBook docs link is dead. The approach requires you to manually split your page into Dom() chunks, which means you're partially reimplementing your templating layer in Python strings or fragmented Jinja files — messy at scale. More importantly, modern alternatives (HTMX, Turbo Streams, or just fixing your slow queries) solve the perceived-performance problem without restructuring how you render pages. At 240 stars after years of existence, the community didn't bite.