بشكل داخلي، يتم بناء RabbitMQ على Erlang/OTP (مناسب للأنظمة المتزامنة والموزعة والمرنة)، ويوجه الرسائل عبر exchanges إلى queues، ويدير تخزين الرسائل والذاكرة والتحكم في تدفق البيانات. يعمق فهم الأداء الداخلي من فهم سلوك RabbitMQ.
Built on Erlang/OTP
RabbitMQ is written in ERLANG (on the OTP framework):
→ Erlang is designed for CONCURRENT, DISTRIBUTED, FAULT-TOLERANT systems (telecom origins)
→ lightweight processes, message passing, supervision → suits a message broker well
→ enables RabbitMQ's concurrency, clustering, and reliability
→ the Erlang foundation is why RabbitMQ handles many connections and is fault-tolerant
Message flow and storage
→ a published message → EXCHANGE → (routing via bindings) → QUEUE(S) → consumer
→ STORAGE: messages held in MEMORY for speed; PERSISTENT messages also written to disk
(durable); under memory pressure, messages may be PAGED to disk
→ LAZY QUEUES → keep messages on disk (for large queues, less memory)
→ queues are processes; the broker manages routing, delivery, acks
