[Tomcat] 5. Batch - Parallel deployment

Batch - Parallel deployment

1. Hot deploy vs Auto deploy

1_1 Hot deploy

- Server on 

- we can deploy our sources while server is working

- Source is in the webapps folder

- we deploy our sources by using context.xml or manager

- server.xml

- autoDelploy = true/false? 

-> If source is in a webapps, Will you deploy a souce automatically?

1_2 Auto deploy

- JSP

- CATALINA_HOME/conf/web.xml

   <servlet>

        <servlet-name>jsp</servlet-name>

        <servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>

        <init-param>

            <param-name>fork</param-name>

            <param-value>false</param-value>

        </init-param>

        <init-param>

            <param-name>xpoweredBy</param-name>

            <param-value>false</param-value>

        </init-param>

         <init-param>

            <param-name>development</param-name>

            <param-value>false</param-value>

        </init-param>

        <init-param>

            <param-name>checkInterval</param-name>

            <param-value>1</param-value>

        </init-param>

        <load-on-startup>3</load-on-startup>

    </servlet>

- Servlet

- context.xml

<Context reloadable = "true"/>

2. Parallel Deploy

2_1. Parallel?

-  There are two app versions

1. app ver.01 (old)

2. app ver.02 (New)

- If A user is using a old version, User can keep using it until User's session is connected

- New user will be used a app ver.02 When New user connect to the Server 

2_2. How to use

a. Naming

-  webapp##version

sample##01

sample##02

b. deploy

- by webapp

- by context.xml

- sample##01.xml

- sample##02.xml