👉 Buses, in the context of computing and distributed systems, refer to a type of software architecture where multiple instances of a service or application run concurrently across different machines, often interconnected via a network. These instances communicate with each other to provide seamless and scalable services to end-users, mimicking the behavior of a single, unified service. Each bus instance can handle specific tasks or maintain state, and they often share resources like databases or caches to improve efficiency. Communication between buses can occur through various protocols and is typically managed using message queues, shared memory, or other inter-process communication mechanisms. This architecture allows for high availability, fault tolerance, and the ability to scale horizontally by adding more bus instances as demand increases, making it a popular choice for building robust and flexible distributed applications.
