Topic

提供一串流式的记录。

Topic 就是数据主题，是数据记录发布的地方,可以用来区分业务系统。Kafka中的Topics总是多订阅者模式，一个topic可以拥有一个或者多个消费者来订阅它的数据。

REST – PUT vs POST

It has been observed that many people struggle to choose betweenHTTP PUT vs POSTmethods when designing a system. Though,RFC 2616has been very clear in differentiating between the two – yet complex wordings are a source of confusion for many of us. Let’s try to solve the puzzlewhen to use PUT or POST.

Let’s compare them for better understanding.

OKHttpUtil

VisualVM 是Netbeans的profile子项目，已在JDK6.0 update 7 中自带(java启动时不需要特定参数，监控工具在bin/jvisualvm.exe)。

修改pom.xml

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<properties>
     <project.build.jdk>1.8</project.build.jdk>
</properties>
<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.1</version>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
                <encoding>UTF-8</encoding>
            </configuration>
         </plugin>
     </plugins>
</build>

修改Project Structure

修改idea tomcat jdk