possible grammatical change
on page https://dev.twitch.tv/docs/pubsub
"These example applications share a common pattern: on application load, the application fetches a complete snapshot of its state and uses a PubSub connection to receive updates to this state. The updates act as “diffs” to the initial state."
Unsure it's stated correctly as PubSub is the model but not the connection. The connection protocol is WebSocket. Should possibly read:
"These example applications share a common pattern: on application load, the application fetches a complete snapshot of its state and uses a WebSocket connection to receive updates to this state. The updates act as “diffs” to the initial state."

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This will be published in this week's scheduled deployment on Feb 26.
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A good call out. The point of this sentence is to mention the initial snapshot of information and then maintaining a connection, so I will update this accordingly. Thanks!