How is message storage organized inside RabbitMQ?

In RabbitMQ, messages are stored inside queues. Each message is placed in a queue and remains there until it is received and acknowledged by a consumer.

Messages can be stored in memory (for quick access) or on disk (for reliability). If a queue is declared as durable, messages are saved to disk, allowing them to be recovered after a server restart.

RabbitMQ uses acknowledgments to ensure that messages are not lost and are processed at least once. If a message is not acknowledged, it can be redelivered.

Thus, message storage is organized through queues with configurable durability and acknowledgment settings, balancing performance and reliability.