Serverless实战：FaaS与Knative对比选型与落地实践

Serverless实战FaaS与Knative对比选型与落地实践大家好我是迪哥。Serverless 是云原生时代的重要方向从 FaaS 到 Knative从函数计算到事件驱动我们经历了多种方案的演进。今天就聊聊 Serverless 的选型和落地经验。Serverless 方案对比方案适用场景特点FaaS云厂商无服务器自动扩缩容KnativeK8s 原生开源标准OpenFaaSK8s 原生简单易用FissionK8s 原生多语言支持FaaS 实战阿里云函数计算# index.py def handler(event, context): return { statusCode: 200, headers: {Content-Type: application/json}, body: Hello, Serverless! }部署配置# serverless.yml service: my-service provider: name: aliyun runtime: python3.9 region: cn-shanghai functions: hello: handler: index.handler events: - http: path: /hello method: getKnative 实战安装配置# 安装 Knative Serving kubectl apply -f https://github.com/knative/serving/releases/download/knative-v1.12.0/serving-crds.yaml kubectl apply -f https://github.com/knative/serving/releases/download/knative-v1.12.0/serving-core.yaml # 安装 Knative Eventing kubectl apply -f https://github.com/knative/eventing/releases/download/knative-v1.12.0/eventing-crds.yaml kubectl apply -f https://github.com/knative/eventing/releases/download/knative-v1.12.0/eventing-core.yaml部署服务apiVersion: serving.knative.dev/v1 kind: Service metadata: name: hello-service spec: template: spec: containers: - image: registry.example.com/hello:latest ports: - containerPort: 8080 autoscaling: minScale: 0 maxScale: 10 target: 100对比选型维度FaaSKnative平台依赖云厂商K8s灵活性受限高成本按需付费自行管理适用场景快速原型生产环境最佳实践清单维度最佳实践选型原型用 FaaS生产用 Knative函数设计无状态幂等冷启动使用预热机制监控集成 Prometheus安全最小权限原则说到 Serverless我家那只叫 Docker 的哈士奇最近学会了无服务器模式——只要我在家它就活跃有服务器我一出门它就睡觉无服务器这按需运行能力比我们的 FaaS 还强 我是迪哥我们下期再见