从技术架构设计到代码实现

1、从技术架构设计到代码实现Everything as CodeAgenda架构设计(Architecture)微服务架构(MicroServices)领域驱动设计(Domain Driven Design)反应式设计(Reactive)代码生成之脚手架代码智能 + IDE架构设计Client-Server ArchitectureObject-Oriented ArchitectureDomain-driven ArchitectureOnion ArchitectureAspect-Oriented ArchitectureService-Oriented ArchitectureMicros

2、ervices ArchitectureLambda ArchitectureComponent-based ArchitectureEvent-driven Architecture/donnemartin/system-design-primer微服务是什么？有目的地将服务拆小并提供跨语言的通讯能力系统分类Megalith Platform:艾尔斯平台Humongous single codebase resulting in a single applicationMonolith Platform：巨石系统Large single codebase resulting in a sin

3、gle applicationMacro SOA Platform：宏服务系统Classical SOA applications, and platforms consisting of loosely-coupled large services (potentially a series of interconnected monoliths)系统分类Meso Application Platform：中观系统Meso or middle-sized services interconnected to form a single application or platform. Ess

4、entially a monolith and microservices hybridMicroServices Platform：微服务Cloud native loosely-coupled small services focused around DDD-inspired bounded contextsNanoServices Platform：纳米服务Extremely small single-purpose (primarily reactive) serviceMegalith Platform浑然天成上帝之手设计盲人摸象艾尔斯巨石 (AyersRock)软件：“天网”Mo

5、nolith Platform宏伟，壮观倾全国全公司之力不计成本NB的设计师流“芳”百世Macro SOA Platform“杰”作：堆积结构常人难以想象成本巨大架构师的目标Meso Platform内部依赖：卯榫结构不知不觉形成大应用大家都会朝这个方向“努力”系统结构：混合&脆弱经常维修&重构，成本非常高功能：纪念&形象MicroServices职责明确通讯：总线结构简单&成本低稳定&可扩展组合后功能强大NanoServices功能单一结构简单非常稳定: 99.9999%寿命长：100,000小时问题：我系统非常复杂， 不能有这种单一服务如何实现微服务架构？Domain Driven Des

6、ignfrom Problem Spaceto Solution SpaceDDD Crew: /ddd-crewDDD Code StructureStructureDDD SupportCode PackageDomain Event: CloudEventsSomething that happened in the past ID + Timestamp merged: TimestampUUIDpayloadImmutable Broadcast to listenersOthers：type, source, contextSpecification & ValidationWhe

7、re do I put validation?Anywhere? How to fix duplication/conflictVerbs: is, and, not, or etcSpecification assistant layerEvent schema: Apache Avro, JSON Schema etc会员系统一个大应用，多个Module，单个JVM部署AccountProfileTag Bool & KVPaymentProfileBasicProfileSnsProfileXxxProfile标准会员中心Grade Prime membersCredits 积分会员Do

8、mainAccountProfileTag Bool & KVPaymentProfile CreditCard & AlipayBasicProfileSnsProfileXxxProfileWechatProfileFacebookProfile通用稳定经常 变化通用 稳定安全要求技术一致EventEventSpring SecurityRedis: BitsetDDD as CodeDomain & SubdomainContext MapBoundedContextUser Story & Use CaseContextMapperContext MappingDDD & Reacti

9、veAsync vs SyncMessage Driven & Back PressureDuplex: pub/sub, RPC, Data CollectionHigh PerformanceAll-in-OneSync or Async?RSocket通讯模型Request/Response: rpcRequest/Stream: pub/subFire-and-Forget: logging, metrics等数据上报Bi-direction: mobile & IoT Server通讯双方都能进行角色互换: Client ServerRSocket Tech StackRSocket

10、 ProtocolRPC(Request/Response)Pub/Sub (Request/Stream)No Ack (Fire & Forget)Bi-Direction (Channel)HessianProtobufJSONCBOR/Avor/TCPWebSocketUDP/AeronRDMARSocket通讯补充之BrokerClient1RSocket Broker Cluster (Routing/Fil tering)SVC1Client2SVC2client-server client-client server-server service-clientTCPWebSoc

11、ket UDP/AeronToken Based创建连接创建连接Roaring BitmapScaleCube ClusterCloudEventsReactive生态Reactive & CodeDesign Pattern: ObservableOperators: http:/reactivex.io/documentation/operators.htmlPolyglot: RxJava, RxJS, RxPy Async Integration: Promise/Future(async/await), Coroutines Reactive OperatorsCloud Nativ

12、e & ReactiveXxx as a ServiceArchitecture & CodingArchitectural Refactoring for the Cloud (ARC)Reactive IntegrationEAI: Enterprise Application IntegrationGlossary: ESB, Data format/transformation/ integration, Messsage Driven, Adapter/Connector etcReactive Integration: Apache Camel, Spring Integration, AlpakkaConnect everything: Promise, Future, Pub/Sub, EventLoop, Actor, RE