iOS
Rate Limits

Rate Limits

Sendbird applications are rate-limited to ensure the best experience for users. If you exceed a rate limit, Sendbird server will return an error message that includes the encountered rate limit as well as how long you should wait before retrying.

Note : Sendbird organizations created after May 28, 2020, 00:00:00 UTC are automatically rate-limited, while those created before this date will be given sufficient time to adjust their applications before rate limits apply. Go to Settings > Application > General on the Sendbird Dashboard to see which rate limits your organizations are subject to. If you need a higher rate limit for API requests, contact our sales team for further assistance.


Rate-limited methods

Rate limits apply to the SDK methods associated with objects including channel, user, message objects, and more. For example, a user can send up to 5 messages per second to an open or group channel. The following table lists the default rate limits per user.

SDK methodCalls per secondCalls per minute

Listing objects

20

120

Retrieving objects

20

120

Creating objects

10

120

Updating objects

10

120

Deleting objects

10

120

Profile image upload

2

40

File upload

4

60

Updating channel metacounter

20

400

Note : As for open channels, a separate rate limit is applied. They can display only 5 messages per second and excess messages are stored in our database, but not shown in the channel view.


Rate-limited real-time events

Some real-time events taking place on client apps are rate-limited in order to sustain stable operation. The following table lists the default rate limits for those events.

EventCalls per second

Sending a message

5

Marking messages as read

3

Sending typing indicator to other members

0.1

Other events

* These include sending a file message, editing a message, or marking messages as delivered.

3

Note : Limits on sending typing indicator to channel members apply to both users and channels.


Error responses

When a request is rate-limited, a RateLimitExceeded (500910) or TooManyMessages (900200) error will be returned.

Note : See the Error Codes page for more information.