Federation og shovel er RabbitMQ-funktioner til at forbinde separate brokers — flytning af beskeder mellem RabbitMQ-instanser på tværs af lokationer eller netværk. De muliggør distribueret messaging på tværs af datacentre uden clustering over upålidelige links.
Behovet: at forbinde separate brokers
Clustering connects nodes on a RELIABLE, low-latency network. But sometimes you need to
connect brokers across DATA CENTERS / regions / unreliable networks:
→ clustering is UNSUITABLE for high-latency/unreliable links (it needs tight coupling)
→ FEDERATION and SHOVEL link separate brokers loosely (good for WAN/geo-distribution)
