Fix RabbitMQ High Memory Issues

When RabbitMQ’s memory usage is too high, you can try the following solutions:

1. Check the number of messages in the queue: If there is a large backlog of messages in the queue, consider increasing the number of consumers to speed up message processing, or adjusting the Time To Live (TTL) of the messages to automatically delete expired messages.
2. Check the consumer side’s consumption speed: if the consumer side is processing messages too slowly, consider optimizing the consumer side’s code to increase message processing efficiency, or adding more consumer instances to share the message processing workload.
3. Check the type of Exchange: If the Exchange type is fanout, it will broadcast messages to all bound queues, which may result in high memory usage. Consider using direct or topic type Exchanges, which only send messages to queues that meet specific criteria.
4. Adjust the memory limit parameter of RabbitMQ: You can change the configuration file of RabbitMQ to adjust the memory limit parameter and restrict the memory usage of RabbitMQ.
5. Regularly clean up unused queues and messages: Periodically clean up queues and messages that are no longer in use to free up memory space.
6. Upgrade the RabbitMQ version: If the mentioned methods fail to solve the issue, consider upgrading the RabbitMQ version as the newer version might have fixed the bug causing high memory usage.

If the aforementioned methods are not able to solve the problem, it is recommended to contact RabbitMQ official technical support for assistance.