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ApsaraMQ for RabbitMQ:Limits

Last Updated:Oct 12, 2024

ApsaraMQ for RabbitMQ imposes limits on clusters, API calls, and string characters. Before you use ApsaraMQ for RabbitMQ, make sure that the limits are not exceeded. Otherwise, exceptions may occur in your program.

Clusters

Item	Serverless Edition	Professional Edition	Enterprise Edition	Enterprise Platinum Edition
Elastic TPS	Maximum value: 50000.	Half of the peak messaging TPS in the computing specification.	Equal to the peak messaging TPS in the computing specification. Maximum value: 50000.	Equal to the peak messaging TPS in the computing specification. Maximum value: 50000.
vhosts per instance	Maximum value: 200.	Valid values: number of queues to 200.	Maximum value: 200.	Maximum value: 4096.
Connections per instance	Maximum value: 10000.	Four times the number of queues. Valid values: 1000 to 5000.	Purchase a connection quota based on the instance specification. A free quota of at least 2,000 connections is provided for an instance. The maximum number of connections per instance is 10,000.	Purchase a connection quota based on the instance specification. A free quota of 50,000 connections is provided for an instance. The maximum number of connections per instance is 100,000.
Exchanges per vhost	Equal to the number of queues.	Equal to the number of queues.	Equal to the number of queues.	None.
Bindings per vhost	10 times the number of queues. Valid values: 4096 to 20000.	10 times the number of queues. Valid values: 4096 to 20000.	10 times the number of queues. Valid values: 4096 to 20000.	None.
Queues per instance	Maximum value: 6000.	Maximum value: 6000.	Maximum value: 6000.	Maximum value: 80000.
Queues bound to an exchange	Maximum value: 256.	Maximum value: 256.	Maximum value: 256.	Maximum value: 256. If you want to increase the quota, contact Alibaba Cloud technical support.
Consumers per queue	Four times the number of queues. Valid values: 800 to 5000.	Four times the number of queues. Valid values: 50 to 5000.	Four times the number of queues. Valid values: 800 to 5000.	None.
Channels per connection	Valid values: number of queues to 2048. If the number of queues is less than 2,048, the maximum number of channels per connection is equal to the number of queues. If the number of queues is greater than or equal to 2,048, the number of channels per connection is 2,048.	Valid values: 64 and number of queues. If the number of queues is less than or equal to 64, the number of channels per connection is 64. If the number of queues is greater than 64, the number of channels per connection is equal to the number of queues.	Valid values: Number of queues to 2048. If the number of queues is less than 2,048, the maximum number of channels per connection is equal to the number of queues. If the number of queues is greater than or equal to 2,048, the number of channels per connection is 2,048.	Maximum value: 3000.
Message size	Maximum value: 1 MB.	Maximum value: 64 KB.	Maximum value: 1 MB. If a message is smaller than 64 KB in size, one API call is counted to process the message data. If a message is larger than 64 KB in size, one API call is counted to process each 4 KB of the excess message data.	Maximum value: 1 MB.
Delay period for delayed messages	Maximum value: 7 days.	Maximum value: 24 hours.	Maximum value: 7 days.	Maximum value: 7 days.
Retention period for messages	Maximum value: 3 days.	Maximum value: 3 days.	Maximum value: 3 days.	Maximum value: 3 days.
Number of times that a message can be requeued	Maximum value: 16.	Maximum value: 16.	Maximum value: 16.	Maximum value: 64
Consumption timeout period	Maximum value: 15 minutes.	Maximum value: 10 minutes.	Maximum value: 15 minutes.	Maximum value: 60 minutes.

API calls

Important

Serverless Edition, Professional Edition, and Enterprise Edition instances: The number of calls to an API operation is limited, and the total number of calls to all API operations is limited by the peak transactions per second (TPS) that you purchase.
Enterprise Platinum Edition instances: The number of calls to an API operation is not limited, but the total number of calls to all API operations is limited by the peak TPS that you purchase.

Item	Operation	Serverless Edition	Professional Edition	Enterprise Edition	Enterprise Platinum Edition
Synchronous message receiving on an instance	`basicGet`	500 TPS	500 TPS	500 TPS	None.
Queue clearance on an instance	`purgeQueue`	500 TPS	500 TPS	500 TPS	None.
Exchange creation on an instance	`exchangeDeclare`	500 TPS	500 TPS	500 TPS	None.
Exchange deletion on an instance	`exchangeDelete`	500 TPS	500 TPS	500 TPS	None.
Queue creation on an instance	`queueDeclare`	500 TPS	500 TPS	500 TPS	None.
Queue deletion on an instance	`queueDelete`	500 TPS	500 TPS	500 TPS	None.
Binding creation on an instance	`queueBind`	500 TPS	500 TPS	500 TPS	None.
Binding deletion on an instance	`queueUnbind`	500 TPS	500 TPS	500 TPS	None.
Message restoration on an instance	`basicRecover`	500 TPS	500 TPS	500 TPS	None.
Message requeuing on an instance	`basicReject(requeue=true)` `basicNack(requeue=true)`	20 TPS	20 TPS	20 TPS	None.

String characters

Item	Limit
Queue name	A queue name can contain only letters, digits, hyphens (-), underscores (_), periods (.), number signs (#), forward slashes (/), and at signs (@). A queue name must be 1 to 255 characters in length.
Exchange name	An exchange name can contain only letters, digits, hyphens (-), underscores (_), periods (.), number signs (#), forward slashes (/), and at signs (@). An exchange name must be 1 to 255 characters in length.
vhost name	A vhost name can contain only letters, digits, hyphens (-), underscores (_), periods (.), number signs (#), forward slashes (/), and at signs (@). A vhost name must be 1 to 255 characters in length.
Binding Key	Normal binding keys A binding key can contain only letters, digits, hyphens (-), underscores (_), periods (.), forward slashes (/), and at signs (@). A binding key must be 1 to 255 characters in length. Topic binding keys A binding key can contain only letters, digits, hyphens (-), underscores (_), asterisks (), periods (.), number signs (#), forward slashes (/), and at signs (@). A binding key must be 1 to 255 characters in length. A binding key cannot start or end with a period (.). If a binding key starts with a number sign (#) or an asterisk (), the number sign (#) or asterisk () must be followed by a period (.). If the binding key ends with a number sign (#) or an asterisk (), the number sign (#) or asterisk () must be preceded by a period (.). If a number sign (#) or an asterisk () is used in the middle of a binding key, the number sign (#) or asterisk (*) must be preceded and followed by a period (.).
Consumer Tag	A consumer tag can contain only letters, digits, hyphens (-), underscores (_), periods (.), number signs (#), forward slashes (/), and at signs (@). A consumer tag must be 1 to 255 characters in length.
Message ID	A message ID can contain only letters, digits, hyphens (-), underscores (_), periods (.), number signs (#), forward slashes (/), and at signs (@). A consumer tag must be 1 to 255 characters in length.