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Queues100 per account 1
Maximum message size128 KB
Maximum message retries100
Maximum batch size100 messages
Maximum batch wait time30 seconds
Maximum message throughput 2100 messages per second
Maximum retention period4 days (96 hours)

1 Request adjustments to limits that conflict with your project goals by contacting Cloudflare. To increase a limit, complete the Limit Increase Request Form. 2 This is a limit that we will increase, and aspire to effectively eliminate in the future.


  • 1 KB is measured as 1000 bytes. Messages can include up to ~100 bytes of internal metadata that counts towards total message limits.
  • Messages in a queue that have not been consumed after four days are deleted from the queue. Queues does not delete messages in the same queue that have not reached this limit.