Message Queue for RabbitMQ imposes limits on clusters, calls to interfaces, and characters used to name resources. When you use Message Queue for RabbitMQ, make sure that all the related requirements are met. Otherwise, an exception may occur.

Limits on clusters

Item Professional Edition Platinum Edition
Number of vhosts per instance 16 to 200 (equal to the number of queues) 4,096
Number of connections per instance 1,000 to 5,000 (equal to the number of queues multiplied by 4) 50,000
Number of exchanges per vhost Minimum number: 16 (equal to the number of queues) 8,192
Number of bindings per vhost 4,096 to 20,000 (equal to the number of queues multiplied by 10) Not limited
Number of consumers per queue 50 to 5,000 (equal to the number of queues multiplied by 4) Not limited
Number of channels per connection Minimum number: 64 (equal to the number of queues) 3,000
Message size 64 KB 1 MB
Maximum retention period for a delayed message 24 hours 24 hours
Maximum retention period for a message Three days Three days
Maximum number of times a message can be requeued 16 64

Limits on calls to interfaces

Notice
  • Professional Edition (subscription): The number of calls to a single interface is limited, and the total number of calls to all interfaces is limited by the peak transactions per second (TPS) that you purchase.
  • Platinum Edition (subscription): The number of calls to a single interface is not limited, but the total number of calls to all interfaces is limited by the peak TPS that you purchase.
Item Professional Edition Platinum Edition
Message sending on a single instance 25,000 TPS Not limited
Synchronous message reception on a single instance 25,000 TPS Not limited
Connection enabling on a single instance 500 TPS Not limited
Channel enabling on a single instance 500 TPS Not limited
Queue clearance on a single instance 500 TPS Not limited
Exchange creation on a single instance 500 TPS Not limited
Exchange deletion on a single instance 500 TPS Not limited
Queue creation on a single instance 500 TPS Not limited
Queue deletion on a single instance 500 TPS Not limited
Binding creation on a single instance 500 TPS Not limited
Binding deletion on a single instance 500 TPS Not limited
Message restoration on a single instance 500 TPS Not limited
Message requeuing on a single instance 20 TPS Not limited

Limits on characters used to name resources

Item Description
Queue name The name must be 1 to 255 characters in length, and can contain only letters, digits, hyphens (-), underscores (_), periods (.), and at signs (@).
Exchange name The name must be 1 to 255 characters in length, and can contain only letters, digits, hyphens (-), underscores (_), periods (.), and at signs (@).
vhost name The name must be 1 to 255 characters in length, and can contain only letters, digits, hyphens (-), underscores (_), periods (.), and at signs (@).
Binding key name
  • Common: The name must be 1 to 255 characters in length, and can contain only letters, digits, hyphens (-), underscores (_), periods (.), and at signs (@).
  • Topic: The name must be 1 to 255 characters in length, and can contain only letters, digits, hyphens (-), underscores (_), asterisks (*), periods (.), number signs (#), and at signs (@). If the name contains a number sign (#), it must start with a number sign (#) followed by a period (.) or end with a number sign (#) that follows a period (.).
Consumer tag name The name must be 1 to 255 characters in length, and can contain only letters, digits, hyphens (-), underscores (_), periods (.), and at signs (@).