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Sliding Sync from a Dart developer perspective

Hej, jeg er

The one with the braid

[matrix] for healthcare, legacy systems and desktops
Unix, Flutter engine and Snapdragons
ask me about night trains

Never

implement

a MSC

apparently the implementations changed while working on this talk

Why this talk ?

I was bored during super-duper important scrum meetings
Let's share the experience
beep-boop <3

Sliding Sync in short

(not the scope of this talk)

Server side state resolution
High-level view-based sync endpoint
Simplified initial sync
Performance boost

[Datrix] mart SDK

Huge credits to my friends from Famedly <3 !

Dart side

SlidingClient based in the SDK
SlidingSyncProxy on Flutter side

Goal

backward compatibility with Sync v2
pure drop in replacement for clients

SlidingClient

listens on sliding windows
syncs sliding windows with API endpoints
provides streams for room states

SlidingClient ⇆ SlidingSyncProxy

SlidingSyncProxy

Flutter sliver delegate
handling scroll position
provides sliding window streams

Great, can I try it ?

No.

Prospect

streamlining with implementations in wild
discussing new Flutter APIs with Famedly
profit !

[matrix]

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By The one with the braid

[matrix]

68

The one with the braid