如何最小化 jhipster 微服务环境的内存占用？

Question

创建基础微服务环境后：

• 注册表： jhipster-registry
• 用户记账和授权： jhipster-uaa
• 网关： jhipster-gateway
• 微服务： jhipster-microservice

设置环境变量时内存不足：

JAVA_OPTS='-Xmx512m'

和我的电脑自己的8Go（系统使用的2Go）

jhipster-registry 是通过 ./mvnw 启动的

jhipster-{uaa, gateway, microservice, foo} 通过 ./gradlew 启动

感谢您的帮助

注意：在用于生成这些应用程序的 jh 文件下方

# documentation https://www.jhipster.tech/jdl/
application {
  config {
    baseName                uaa,
    packageName             fr.org.foo.uaa,
    applicationType         uaa,
    serverPort              9999,
    buildTool               gradle,
    clientPackageManager    npm,
    nativeLanguage          en,
    languages               [en,fr],
    enableTranslation       true,
    authenticationType      uaa,
    cacheProvider           hazelcast,
    databaseType            mongodb,
    devDatabaseType         mongodb,
    prodDatabaseType        mongodb,
    searchEngine            elasticsearch,
    enableHibernateCache    true,
    serviceDiscoveryType    eureka,
    testFrameworks          [gatling,cucumber],
    skipClient              true
  }
  entities Workflow, Task, Command
}


application {
  config {
    baseName                gateway,
    packageName             fr.org.foo.gateway,
    applicationType         gateway,
    serverPort              8080,
    buildTool               gradle,
    clientPackageManager    npm,
    nativeLanguage          en,
    languages               [en,fr],
    enableTranslation       true,
    authenticationType      uaa,
    uaaBaseName             "uaa",
    cacheProvider           hazelcast,
    websocket               spring-websocket,
    databaseType            mongodb,
    devDatabaseType         mongodb,
    prodDatabaseType        mongodb,
    searchEngine            elasticsearch,
    enableHibernateCache    true,
    serviceDiscoveryType    eureka,
    clientFramework         react,
    testFrameworks          [gatling,cucumber,protractor],
    jhiPrefix               jhi
  }
  entities Workflow, Task, Command
}

application {
  config {
    baseName                foo,
    packageName             fr.org.foo.foo,
    applicationType         microservice,
    serverPort              8081,
    buildTool               gradle,
    clientPackageManager    npm,
    nativeLanguage          en,
    languages               [en,fr],
    enableTranslation       true,
    authenticationType      uaa,
    uaaBaseName             "uaa",
    cacheProvider           hazelcast,
    websocket               spring-websocket,
    databaseType            mongodb,
    devDatabaseType         mongodb,
    prodDatabaseType        mongodb,
    searchEngine            elasticsearch,
    enableHibernateCache    true,
    serviceDiscoveryType    eureka,
    testFrameworks          [gatling,cucumber],
    jhiPrefix               jhi
  }
  entities Workflow, Task, Command
}

entity Workflow {
    id          Long        required,
    name        String      required minlength(3),
    description String
}

entity Task {
    id          Long        required,
    name        String      required minlength(3),
    type        TaskType    required,
    description String
}

# http://www.workflowpatterns.com/patterns/
enum TaskType {
    Sequence,
    Split,
    Synchronization,
    ExclusiveChoice,
    SimpleMerge
}

entity Command {
    id          Long        required,
    command     String      required minlength(3),
    parameters  String,
    version     String      required
}


relationship OneToMany {
    Workflow{task}  to Task,
    Task{command}   to Command
}

relationship ManyToOne {
    Task{previous}  to Task
    Task{next}      to Task
}

microservice Workflow, Task, Command with foo

Answer 1

你确定 JAVA_OPTS 被 mvnw 或 gradlew 使用？

就我个人而言，我在 spring-boot-maven-plugin 配置的 pom.xml 中设置了 JVM args：

    <plugin>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-maven-plugin</artifactId>
      <version>${spring-boot.version}</version>
         ...
      <configuration>
        <executable>true</executable>
        <fork>true</fork>
        <mainClass>${start-class}</mainClass>
        <jvmArguments>-Xms64m -Xmx128m</jvmArguments>
      </configuration>
    </plugin>

gradle也有类似的设置

bootRun {
   jvmArgs = ["-Xms64m", "-Xmx128m"]
}