Message queues

• Stored in memory, that supports asynchronous communication
• Serves as a buffer and distributes asynchronous requests

Basic architecture

• Input services, called producers/publishers, create messages and publish them to a message queue
• Other services called consumers/subscribers connect to the queue, and perform actions defined by the messages

Advantage: Decoupling

• The producer can post a message even when the consumer is unavailable.
• Likewise, the consumer can read messages even when the producer is offline

Sources

• (Done) Scale From Zero To Millions Of Users by ByteByteGo

Related Notes