Analyze Distributed Processing options in Ruby: DRb architecture vs modern Redis-backed messaging queues.

DRb (Distributed Ruby) allows objects to communicate over sockets via remote method invocation, while modern architectures prefer decoupled, persistent message queues like Redis or RabbitMQ for scalability.

DRb allows a Ruby process to expose objects over a network socket, enabling other remote Ruby processes to invoke methods on them directly. While powerful, DRb acts as a synchronous, tightly-coupled state architecture that is vulnerable to network latency and lacks built-in resilience. Modern distributed architectures typically choose asynchronous, decoupled pipelines using message queues like Redis (Sidekiq) or RabbitMQ, which offer persistence, retries, and independent horizontal scaling.