Application Server, Spring Boot, WildFly Swarm
Application servers once ruled the world of Java application development, but no more.
- The decline of the Java application server, James Strachan
Huge Monolith Process
Vs
Loosely-Coupled Microservices
应用演变的趋势:
- 大的应用（500万行代码）项目被拆分成小块
- 从开发到部署的时间需要数量级的缩短
微服务设计原则：
- 模块化
- 易部署性
- 独立扩展性
Docker 容器
- 跨平台安装部署软件
- 比虚拟机轻量级
- 运行不同版本号的软件
Containers vs. virtual machines
Docker Engine Architecture
Kubernetes
Kubernetes Basic Concepts
Cluster
Deployment
Pod
Node
Service
Label & Label Selector
Scaling
Updating
Kubernetes Vs WildFly Domain
WildFly Domain
WildFly Domain Underlying
Spring Boot
- Auto Configure(pre-defined, context less)
- Auto Detect(pool, tx, ef, ds)
- Why starter?(quickly get up and running)
- Why Jar?
- Bootstrap - SpringApplication
- Fine-grained control - initializers, listeners, etc
How to Develop
- Consider re-use Configuration(spring-boot-starter, spring-boot-starter-jdbc)
- Develop Configuration
- Develop interceptor, listener, etc
Auto Configure
@Configuration
@ConditionalOnClass({EmbeddedServer.class, ExecutionFactory.class})
@EnableConfigurationProperties(TeiidProperties.class)
@Import({ Registrar.class })
public class TeiidAutoConfiguration implements Ordered {
ApplicationListener
class TeiidPostProcessor implements BeanPostProcessor, Ordered, ApplicationListener{}
class TeiidInitializer implements ApplicationListener {}
Bean
@Primary
@Bean
@ConfigurationProperties(prefix = "spring.datasource")
public DataSource teiidDataSource() {
return DataSourceBuilder.create().build();
}
WildFly Swarm
- WildFly Reconstruction
- JEE in Microservice
- Do similar work as Spring