API PubSub Limits

[Lefteris]

Hi,

We have a Twitch Extension and we would like to use Twitch’s PubSub API.
I’m just checking if there any limits to using the service.

We currently have a 3rd party PubSub integration and we are looking to replace it with the Twitch PubSub API service.
We are broadcasting messages to all Extension users, roughly at a couple of minutes intervals.
The number of messages depend on the number of events we generate on our Extension, but for a 2 hour stream, it would be something around 50 to 250.

Is that Ok, or this kind of usage is considered abusive?

Thank you!

[Dist]

The limits for Extension PubSub are mentioned here: Building Extensions | Twitch Developers

Broadcasting via PubSub

When the EBS wants to transmit real-time messages or state via PubSub, it will use the Send Extension PubSub Message endpoint. Using this endpoint, your EBS can broadcast to all viewers of a given channel or to specific users via a whisper.

Adhere to these limits for Twitch PubSub traffic:

• 1 message per second per channel
• 5 KB message size

These rules ensure the stability and scalability of our systems.

[BarryCarlyon]

The send a pubsub message API also returns headers to help keep within the timing constraints

For a Channels it is

resp.headers[‘ratelimit-ratelimitermessagesbychannel-remaining’], ‘/’, resp.headers[‘ratelimit-ratelimitermessagesbychannel-limit’]

So you can use this to auto rate limit your sending logic

[Lefteris]

Thank you both!