~/talk

SSE vs WebSockets vs Long Polling

Talkat JS Fest 2018 · on Saturday, 2018-03-31· [web-platform, nodejs]

speaker

name:Martin Chaov

github:mchaov

resources

video:https://youtu.be/n9mRjkQg3VE

slides:https://www.slideshare.net/JSFestUA/js-fest-2018-martin-chaov-sse-vs-websockets-vs-long-polling

summary

Concrete comparison of SSE, Web-Sockets, and Long-Polling with code and a working demo: Node backends behind nginx, HTTP/2 multiplexing pushes many widget streams over single HTTP/2 multiplexed connection, SSE client uses EventSource and an event id resume so reconnects fetch missed messages, proxies drop idle streams (~15s) so demo uses keep-alive padding, gzip moved to nginx, and a test with five node processes yields only three live message sources during the demo, showing practicality and remaining edge cases.

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