Kin
Can a bad internet connection cause issues with websockets in Phoenix?
I am new to Phoenix keep but I keep hearing that there is an issue with websockets when you are on a bad internet - mostly mobile phones in cars, subway, trains, remote locations, etc.
Somebody also mention long-polling - is that a default setting?
What is your experience?
Also how does this affect when you want to use Phoenix for mobile iOS, Android apps via the API pipeline. Is it similar?
I am new to Phoenix, so sorry if those questions are dumb.
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christhekeele
These are all good questions!
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Phoenix does not require use of sockets (be it websockets or long-polling backend), so it degrades just like any MVC framework under poor network connectivity.
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If you do choose to use sockets, it degrades just like any other websocket-driven UX under poor network connectivity. Possibly better, because of the long-polling fallback, I don’t remember how that works out of the box.
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LiveView is a framework for building soft-realtime bi-directional UI experiences on top of sockets, so its performance characteristics fall into point 2. Note that LiveView is not required to build a Phoenix app, nor even recommended for the average use-case.
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If you are powering a mobile application via calls to a Phoenix API you are using standard MVC, so see point 1.
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If you’re curious, try running some simulations. Most browsers have good support for simulating network latency, and Phoenix even comes with special tooling for simulating socket latency in particular!
In general, Phoenix is a web framework, so degrades like any web framework when packets can’t get through. LiveView is a realtime UI framework, so degrades like any constant-connection application when packets can’t get through. Nothing unique to Phoenix: bad internet impacts access to web apps.
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