Notes and Constraints

Version

Server version: 3.8.35 and AMQP-0-9-1

AMQP 0-9-1 clients are supported.

Number of connections

The allowed number of connections differs by instance specifications and mode (single-node or cluster). For details, see Specifications.

-

Channels

• RabbitMQ 3.8.35: ≤ 2047
• RabbitMQ AMQP-0-9-1: ≤ 2000

Number of channels that can be created for a single connection.

Message size

≤ 50 MB per message for RabbitMQ 3.8.35; ≤ 4 MB per message for RabbitMQ AMQP-0-9-1.

Do not send a message larger than 50 MB. Otherwise, the message will fail to be created.

Memory high watermark

≤ 40%

If the memory usage exceeds 40%, the high memory watermark may be triggered, blocking publishers.

Available only for RabbitMQ 3.8.35 instances.

Disk high watermark

≥ 5 GB

If the remaining disk space is less than 5 GB, the high disk watermark is triggered, blocking publishers.

Available only for RabbitMQ 3.8.35 instances.

cluster_partition_handling

pause_minority

When a network partition occurs in a cluster, cluster brokers will determine whether they are in a minority, that is, fewer than or equal to the total number of brokers. Minority brokers pause when a partition starts, detect the network status periodically, and start again when the partition ends. If queue mirroring is not enabled, queue replicas in the minority will no longer be available for message creation and retrieval.

This strategy sacrifices availability for data consistency.

RabbitMQ plug-ins

RabbitMQ plug-ins can be used for testing and service migration. Do not use them for production. Reliability issues caused from using plug-ins are not within commitments on SLAs.

RabbitMQ instances provide AMQP 0-9-1 service messaging functions and are compatible with corresponding components such as vhosts and exchanges. Plug-ins of RabbitMQ instances are non-core functions and are not recommended for production.

Available only for RabbitMQ 3.8.35.