What is spring cloud stream? What can I do? Why should he be introduced?
Spring cloud stream Chinese instruction manual address: m.wang1314.com/doc/webapp/topic/20971999.html
Spring cloud stream uses Binder as the binding layer to achieve isolation:
Common notes on spring cloud stream:
So far, start to write a small Demo, take RabbitMQ as an example:
Producer 8801:
The following consumer 8802: Same as the 8803 code
After 8802 and 8803 are started, there are two problems: 1.8802 and 8803 have received messages at the same time, there is a problem of repeated consumption 2. Message persistence problem;
Two consumers, 8802 and 8803 in the same group are ok. After the producer sends a message, each microservice under the same group reads the message through polling.
After talking about repeated consumption, let's talk about persistence: as long as the 8803 is configured with groupA, when it is turned on again, it will receive the message sent by the producer before, which is persistence.
