Reactive Systems are designed to handle modern application demands by being highly responsive, resilient, elastic, and message-driven. Here are some key characteristics of Reactive Systems:
1. Responsive
Timely Responses: Reactive Systems respond in a timely manner, ensuring that problems are detected quickly and dealt with effectively. This is crucial for maintaining usability and utility.
Consistent Quality of Service: They provide rapid and consistent response times, establishing reliable upper bounds to deliver a consistent quality of service, which simplifies error handling and builds user confidence[1][2].
2. Resilient
Failure Handling: These systems stay responsive even in the face of failure. Resilience is achieved through replication, containment, isolation, and delegation of failures.
Fault Tolerance: Failures are contained within each component, isolating them from each other to ensure that parts of the system can fail and recover without compromising the whole system. Recovery is often delegated to external components, and high availability is ensured through replication[1][2][3].
3. Elastic
Scalability: Reactive Systems can stay responsive under varying workloads by dynamically increasing or decreasing resources allocated to service requests. This elasticity allows them to handle peak loads efficiently without incurring excessive costs.
Cost-Effective: They achieve elasticity in a cost-effective manner, often using commodity hardware and software platforms[1][2][3].
4. Message-Driven
Asynchronous Communication: Reactive Systems rely on asynchronous message-passing to establish boundaries between components, ensuring loose coupling and location transparency.
