Public vs. Private Channel Use Cases with Twilio Programmable Chat

Whether you use private or public messaging will depend on your use case. However, logic around channels might provide some guidance. A private channel can not be seen or joined by non-members, only via REST. Members of private channel can add non-members.

A public channel is seen and can be joined by non-members. Additionally, the public channel, along with its members and messages, is visible to every client endpoint in a given service SID. This means that synchronizing channels lists on client start may take more time when you have a large number of public channels. Because of this, we recommend creating private channels, as they are visible only to participants, and will decrease channel synchronization time at client start.

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