jiti-meet/react/features/base/redux/readme.md

Jitsi Meet - redux state persistency

Jitsi Meet has a persistency layer that persist a subtree (or specific subtrees) into window.localStorage (on web) or AsyncStorage (on mobile).

Usage

If a subtree of the redux store should be persisted (e.g. 'features/base/participants'), then persistency for that subtree should be enabled in the config file by creating a key in

react/features/base/redux/persisterconfig.json

and defining all the fields of the subtree that has to be persisted, e.g.:

{
    "features/base/participants": {
        "avatarID": true,
        "avatarURL": true,
        "name": true
    },
    "another/subtree": {
        "someField": true
    }
}

When it's done, Jitsi Meet will persist these subtrees/fields and rehidrate them on startup.

Throttling

To avoid too frequent write operations in the storage, we utilise throttling in the persistency layer, meaning that the storage gets persisted only once in every 2 seconds, even if multiple redux state changes occur during this period. This throttling timeout can be configured in

react/features/base/redux/middleware.js#PERSIST_DELAY