Visoka dostupnost u RabbitMQ-u uključuje klasteriranje (više čvorova) i repliciranog redova čekanja (preslikane ili quorum redove) tako da sustav preživi kvar čvorova bez gubitka poruka. Razumijevanje HA-a je važno za pouzdani, produkcijski RabbitMQ.
Klasteriranje
RabbitMQ CLUSTER → multiple RabbitMQ nodes working together as one logical broker:
→ nodes share metadata (queues, exchanges, bindings, users)
→ distributes connections and load across nodes
⚠️ by default, a queue lives on ONE node → if that node fails, the queue is unavailable
(clustering alone doesn't make queues highly available → need replication)
