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---
title: "Public Cloud Learning Sessions (OpenText) - Event Driven Architecture - Part 2"
type: source
tags:
- EDA
- Event-Driven
- Architecture
- OpenText
- AWS
date: 2026-04-14
---
## Source File
- [[raw/Cloud & DevOps/Public-Cloud-Learning-Sessions/09_Serverless_AI/public-cloud-learning-sessions-opentext-event-driven-architecture-part-2-2024091.md]]
## Summary
- 核心主题事件驱动架构EDA最佳实践与团队独立性与通用消息模式
- 问题域:事件驱动架构设计、团队协作模式、消息传递模式
- 方法/机制:事件生产者/消费者/代理三角模型、Sparse vs Full State Events、幂等性、事件排序保障、团队独立性
- 结论/价值:去耦应用、实现独立扩展和监控、最小化故障影响
## Key Claims
- 事件驱动架构通过将应用解耦,实现业务功能的逻辑分解,支持进程的独立扩展和监控
- 稀疏事件sparse events体积小适合频繁变化的数据而完整状态事件full state events包含更多细节但受 EventBridge 负载大小限制
- 幂等性确保同一请求多次执行产生相同结果,是处理 AWS Lambda 自动重试的关键
- SQS FIFO 或 Kinesis Data Streams 可以保证事件顺序,对于无序事件可使用 EventBridge 或标准 SQS
- 去中心化团队所有权优于集中式所有权SNS 主题或 EventBridge 规则可实现扇出模式分发事件
## Key Quotes
> "Event is nothing but it's like a change in the state or an update" — 事件即状态变化或更新
> "Everything fails every time means like whatever you have designed and whatever workload you are running it may fail any time" — 任何设计的系统都可能在任何时候失败
## Key Concepts
- [[Event-Driven Architecture]]:事件驱动架构,一种以事件为核心驱动系统行为的架构模式
- [[EventBridge]]AWS 事件路由服务,功能比 SNS 更丰富
- [[SQS]]AWS 简单队列服务,用作事件存储
- [[Step Functions]]AWS 工作流服务,基于状态机编排业务流程
- [[Kinesis]]AWS 数据流服务,用于实时数据流处理
- Idempotency幂等性同一操作多次执行结果相同
- Fan-out Pattern扇出模式一个事件分发多个消费者
- Competing Consumer Pattern竞争消费者模式只有一个消费者可以消费消息
## Key Entities
- [[OpenText]]:云服务提供商,举办本次学习 sessions
- [[AWS]]:云服务平台,提供 EventBridge、SQS、Step Functions、Kinesis 等服务
## Connections
- [[EventBridge]] ← implements ← [[Event-Driven Architecture]]
- [[SQS]] ← implements ← [[Event-Driven Architecture]]
- [[Kinesis]] ← implements ← [[Event-Driven Architecture]]
- [[Step Functions]] ← orchestrates ← [[Event-Driven Architecture]]
- [[Event-Driven Architecture]] ← enables ← Team Independence
- [[Event-Driven Architecture]] ← enables ← Process Isolation