Staged Event Driven Architecture (SEDA)

[npathai]

Description

The Staged Event-Driven Architecture (SEDA) is a design pattern used to manage the complexity of highly concurrent systems. It divides the processing of events into a series of stages connected by queues, allowing for more manageable concurrency and better isolation of different parts of the system. Each stage can be thought of as a pipeline segment that processes events and then hands them off to the next stage. This pattern improves scalability, fault tolerance, and performance.

Main Elements of the Pattern:

1. Stages: Individual units of processing that handle specific tasks. Each stage is isolated from others and communicates through events.
2. Event Queues: Buffers that connect stages, allowing asynchronous communication between them. These queues help decouple the stages, improving system resilience.
3. Thread Pools: Each stage can have its own thread pool to process events concurrently, providing fine-grained control over resource allocation.
4. Event Flow Control: Mechanisms to regulate the flow of events through the stages, preventing bottlenecks and ensuring smooth operation.

References

• Staged Event-Driven Architecture (SEDA) - Wikipedia
• What is SEDA (Staged Event Driven Architecture)?

Acceptance Criteria

1. Implement the basic structure of the SEDA pattern, including stages, event queues, and thread pools.
2. Demonstrate a simple use case that showcases how events flow through multiple stages.
3. Ensure the implementation adheres to the project contribution guidelines, including proper documentation and unit tests.

[david415]

SEDA is totally different from other event driven models. i recommend reading the SEDA paper.

[iluwatar]

Updated task description