Using Tomcat in Production for Spring Boot apps

As a novice with Spring Boot , I need to know the following as I could not find google results in a straight forward manner.
What application servers do they really use for deploying those Spring Boot applications in real life?
Is Tomcat really used by companies - if so do they achieve it using clustering?

asked Nov 19 '18 at 15:24

Spear A1

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asked Nov 19 '18 at 15:24

Spear A1

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asked Nov 19 '18 at 15:24

Spear A1

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spring spring-boot tomcat microservices

asked Nov 19 '18 at 15:24

Spear A1

9518

asked Nov 19 '18 at 15:24

Spear A1

9518

asked Nov 19 '18 at 15:24

Spear A1

9518

asked Nov 19 '18 at 15:24

Spear A1

9518

asked Nov 19 '18 at 15:24

Spear A1

9518

add a comment |

2 Answers
2

active

oldest

votes

Spring boot has an inbuilt Tomcat server, it's simply run from Java.

The Tomcat is built into the jar, so it's the same in any environment.

Here is a typical spring boot jar, with the tomcat jars shown:

greg@greg-XPS-13-9360:~/work/boot-docker/target$ jar tvf boot-docker-1.0.3.jar | grep tomcat

  2293 Mon Jan 30 19:45:14 GMT 2017 BOOT-INF/lib/spring-boot-starter-tomcat-1.5.1.RELEASE.jar

241640 Tue Jan 10 21:03:52 GMT 2017 BOOT-INF/lib/tomcat-embed-websocket-8.5.11.jar

3015953 Tue Jan 10 21:03:50 GMT 2017 BOOT-INF/lib/tomcat-embed-core-8.5.11.jar

239791 Tue Jan 10 21:03:50 GMT 2017 BOOT-INF/lib/tomcat-embed-el-8.5.11.jar

We run our spring boot applications as docker images (complete virtual Unix server) on Redhat Openshift cloud, which is typical.

BTW Tomcat is used commercially and is very reliable.

edited Nov 19 '18 at 15:52

answered Nov 19 '18 at 15:33

Essex Boy

4,4281815

Pardon my ignorance - I have 2 queries that tag along 1) So the real prod system will be fine with JUST being a *nix server with java installed? 2) So in that case do you just run 100s of instances of your Spring boot projects to handle a service ?
– Spear A1
Nov 19 '18 at 15:38

@Velan yes to point 1, usually they are run in a cloud which will elastically scale, but it would have to be a massive load to require 100s.
– Essex Boy
Nov 19 '18 at 15:44

Thanks for your helpful explanations @EssexBoy
– Spear A1
Nov 19 '18 at 17:34

add a comment |

With Spring Boot application, you can generate an application jar which contains Embedded Tomcat. You can run a web application as a normal Java application.

If you still want to deploy your application with Tomcat Server.

First, you need to package a WAR application instead of a JAR. For this, you need to change pom.xml with the following content:

<profiles>    

         <profile>

            <id>war</id>

            <properties>

                <packaging.type>war</packaging.type>

            </properties>

            <dependencies>

                <dependency>

                    <groupId>org.springframework.boot</groupId>

                    <artifactId>spring-boot-starter-tomcat</artifactId>

                    <scope>provided</scope>

                </dependency>

            </dependencies>

            <build>

                <finalName>ROOT</finalName>

            </build>

        </profile>

</profiles>

Let’s modify the final WAR file name in finalName element. (for my case, output is ROOT.war)

Next, to initialize the Servlet context required by Tomcat by implementing the SpringBootServletInitializer interface:

@SpringBootApplication

public class YourApplication extends SpringBootServletInitializer {

}

Then, execute Maven command package with war profile:

mvn clean package -Pwar

edited Nov 19 '18 at 16:03

answered Nov 19 '18 at 15:46

huytmb

974

Thanks @huytmb.
– Spear A1
Nov 19 '18 at 17:37

add a comment |

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2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

Spring boot has an inbuilt Tomcat server, it's simply run from Java.

The Tomcat is built into the jar, so it's the same in any environment.

Here is a typical spring boot jar, with the tomcat jars shown:

greg@greg-XPS-13-9360:~/work/boot-docker/target$ jar tvf boot-docker-1.0.3.jar | grep tomcat

  2293 Mon Jan 30 19:45:14 GMT 2017 BOOT-INF/lib/spring-boot-starter-tomcat-1.5.1.RELEASE.jar

241640 Tue Jan 10 21:03:52 GMT 2017 BOOT-INF/lib/tomcat-embed-websocket-8.5.11.jar

3015953 Tue Jan 10 21:03:50 GMT 2017 BOOT-INF/lib/tomcat-embed-core-8.5.11.jar

239791 Tue Jan 10 21:03:50 GMT 2017 BOOT-INF/lib/tomcat-embed-el-8.5.11.jar

We run our spring boot applications as docker images (complete virtual Unix server) on Redhat Openshift cloud, which is typical.

BTW Tomcat is used commercially and is very reliable.

edited Nov 19 '18 at 15:52

answered Nov 19 '18 at 15:33

Essex Boy

4,4281815

Pardon my ignorance - I have 2 queries that tag along 1) So the real prod system will be fine with JUST being a *nix server with java installed? 2) So in that case do you just run 100s of instances of your Spring boot projects to handle a service ?
– Spear A1
Nov 19 '18 at 15:38

@Velan yes to point 1, usually they are run in a cloud which will elastically scale, but it would have to be a massive load to require 100s.
– Essex Boy
Nov 19 '18 at 15:44

Thanks for your helpful explanations @EssexBoy
– Spear A1
Nov 19 '18 at 17:34

add a comment |

Spring boot has an inbuilt Tomcat server, it's simply run from Java.

The Tomcat is built into the jar, so it's the same in any environment.

Here is a typical spring boot jar, with the tomcat jars shown:

greg@greg-XPS-13-9360:~/work/boot-docker/target$ jar tvf boot-docker-1.0.3.jar | grep tomcat

  2293 Mon Jan 30 19:45:14 GMT 2017 BOOT-INF/lib/spring-boot-starter-tomcat-1.5.1.RELEASE.jar

241640 Tue Jan 10 21:03:52 GMT 2017 BOOT-INF/lib/tomcat-embed-websocket-8.5.11.jar

3015953 Tue Jan 10 21:03:50 GMT 2017 BOOT-INF/lib/tomcat-embed-core-8.5.11.jar

239791 Tue Jan 10 21:03:50 GMT 2017 BOOT-INF/lib/tomcat-embed-el-8.5.11.jar

We run our spring boot applications as docker images (complete virtual Unix server) on Redhat Openshift cloud, which is typical.

BTW Tomcat is used commercially and is very reliable.

edited Nov 19 '18 at 15:52

answered Nov 19 '18 at 15:33

Essex Boy

4,4281815

Pardon my ignorance - I have 2 queries that tag along 1) So the real prod system will be fine with JUST being a *nix server with java installed? 2) So in that case do you just run 100s of instances of your Spring boot projects to handle a service ?
– Spear A1
Nov 19 '18 at 15:38

@Velan yes to point 1, usually they are run in a cloud which will elastically scale, but it would have to be a massive load to require 100s.
– Essex Boy
Nov 19 '18 at 15:44

Thanks for your helpful explanations @EssexBoy
– Spear A1
Nov 19 '18 at 17:34

add a comment |

Spring boot has an inbuilt Tomcat server, it's simply run from Java.

The Tomcat is built into the jar, so it's the same in any environment.

Here is a typical spring boot jar, with the tomcat jars shown:

greg@greg-XPS-13-9360:~/work/boot-docker/target$ jar tvf boot-docker-1.0.3.jar | grep tomcat

  2293 Mon Jan 30 19:45:14 GMT 2017 BOOT-INF/lib/spring-boot-starter-tomcat-1.5.1.RELEASE.jar

241640 Tue Jan 10 21:03:52 GMT 2017 BOOT-INF/lib/tomcat-embed-websocket-8.5.11.jar

3015953 Tue Jan 10 21:03:50 GMT 2017 BOOT-INF/lib/tomcat-embed-core-8.5.11.jar

239791 Tue Jan 10 21:03:50 GMT 2017 BOOT-INF/lib/tomcat-embed-el-8.5.11.jar

We run our spring boot applications as docker images (complete virtual Unix server) on Redhat Openshift cloud, which is typical.

BTW Tomcat is used commercially and is very reliable.

edited Nov 19 '18 at 15:52

answered Nov 19 '18 at 15:33

Essex Boy

4,4281815

Spring boot has an inbuilt Tomcat server, it's simply run from Java.

The Tomcat is built into the jar, so it's the same in any environment.

Here is a typical spring boot jar, with the tomcat jars shown:

greg@greg-XPS-13-9360:~/work/boot-docker/target$ jar tvf boot-docker-1.0.3.jar | grep tomcat

  2293 Mon Jan 30 19:45:14 GMT 2017 BOOT-INF/lib/spring-boot-starter-tomcat-1.5.1.RELEASE.jar

241640 Tue Jan 10 21:03:52 GMT 2017 BOOT-INF/lib/tomcat-embed-websocket-8.5.11.jar

3015953 Tue Jan 10 21:03:50 GMT 2017 BOOT-INF/lib/tomcat-embed-core-8.5.11.jar

239791 Tue Jan 10 21:03:50 GMT 2017 BOOT-INF/lib/tomcat-embed-el-8.5.11.jar

We run our spring boot applications as docker images (complete virtual Unix server) on Redhat Openshift cloud, which is typical.

BTW Tomcat is used commercially and is very reliable.

edited Nov 19 '18 at 15:52

answered Nov 19 '18 at 15:33

Essex Boy

4,4281815

edited Nov 19 '18 at 15:52

answered Nov 19 '18 at 15:33

Essex Boy

4,4281815

answered Nov 19 '18 at 15:33

Essex Boy

4,4281815

answered Nov 19 '18 at 15:33

Essex Boy

4,4281815

Pardon my ignorance - I have 2 queries that tag along 1) So the real prod system will be fine with JUST being a *nix server with java installed? 2) So in that case do you just run 100s of instances of your Spring boot projects to handle a service ?
– Spear A1
Nov 19 '18 at 15:38

@Velan yes to point 1, usually they are run in a cloud which will elastically scale, but it would have to be a massive load to require 100s.
– Essex Boy
Nov 19 '18 at 15:44

Thanks for your helpful explanations @EssexBoy
– Spear A1
Nov 19 '18 at 17:34

add a comment |

Pardon my ignorance - I have 2 queries that tag along 1) So the real prod system will be fine with JUST being a *nix server with java installed? 2) So in that case do you just run 100s of instances of your Spring boot projects to handle a service ?
– Spear A1
Nov 19 '18 at 15:38

@Velan yes to point 1, usually they are run in a cloud which will elastically scale, but it would have to be a massive load to require 100s.
– Essex Boy
Nov 19 '18 at 15:44

Thanks for your helpful explanations @EssexBoy
– Spear A1
Nov 19 '18 at 17:34

Pardon my ignorance - I have 2 queries that tag along 1) So the real prod system will be fine with JUST being a *nix server with java installed? 2) So in that case do you just run 100s of instances of your Spring boot projects to handle a service ?
– Spear A1
Nov 19 '18 at 15:38

@Velan yes to point 1, usually they are run in a cloud which will elastically scale, but it would have to be a massive load to require 100s.
– Essex Boy
Nov 19 '18 at 15:44

Thanks for your helpful explanations @EssexBoy
– Spear A1
Nov 19 '18 at 17:34

add a comment |

With Spring Boot application, you can generate an application jar which contains Embedded Tomcat. You can run a web application as a normal Java application.

If you still want to deploy your application with Tomcat Server.

First, you need to package a WAR application instead of a JAR. For this, you need to change pom.xml with the following content:

<profiles>    

         <profile>

            <id>war</id>

            <properties>

                <packaging.type>war</packaging.type>

            </properties>

            <dependencies>

                <dependency>

                    <groupId>org.springframework.boot</groupId>

                    <artifactId>spring-boot-starter-tomcat</artifactId>

                    <scope>provided</scope>

                </dependency>

            </dependencies>

            <build>

                <finalName>ROOT</finalName>

            </build>

        </profile>

</profiles>

Let’s modify the final WAR file name in finalName element. (for my case, output is ROOT.war)

Next, to initialize the Servlet context required by Tomcat by implementing the SpringBootServletInitializer interface:

@SpringBootApplication

public class YourApplication extends SpringBootServletInitializer {

}

Then, execute Maven command package with war profile:

mvn clean package -Pwar

edited Nov 19 '18 at 16:03

answered Nov 19 '18 at 15:46

huytmb

974

Thanks @huytmb.
– Spear A1
Nov 19 '18 at 17:37

add a comment |

With Spring Boot application, you can generate an application jar which contains Embedded Tomcat. You can run a web application as a normal Java application.

If you still want to deploy your application with Tomcat Server.

First, you need to package a WAR application instead of a JAR. For this, you need to change pom.xml with the following content:

<profiles>    

         <profile>

            <id>war</id>

            <properties>

                <packaging.type>war</packaging.type>

            </properties>

            <dependencies>

                <dependency>

                    <groupId>org.springframework.boot</groupId>

                    <artifactId>spring-boot-starter-tomcat</artifactId>

                    <scope>provided</scope>

                </dependency>

            </dependencies>

            <build>

                <finalName>ROOT</finalName>

            </build>

        </profile>

</profiles>

Let’s modify the final WAR file name in finalName element. (for my case, output is ROOT.war)

Next, to initialize the Servlet context required by Tomcat by implementing the SpringBootServletInitializer interface:

@SpringBootApplication

public class YourApplication extends SpringBootServletInitializer {

}

Then, execute Maven command package with war profile:

mvn clean package -Pwar

edited Nov 19 '18 at 16:03

answered Nov 19 '18 at 15:46

huytmb

974

Thanks @huytmb.
– Spear A1
Nov 19 '18 at 17:37

add a comment |

With Spring Boot application, you can generate an application jar which contains Embedded Tomcat. You can run a web application as a normal Java application.

If you still want to deploy your application with Tomcat Server.

First, you need to package a WAR application instead of a JAR. For this, you need to change pom.xml with the following content:

<profiles>    

         <profile>

            <id>war</id>

            <properties>

                <packaging.type>war</packaging.type>

            </properties>

            <dependencies>

                <dependency>

                    <groupId>org.springframework.boot</groupId>

                    <artifactId>spring-boot-starter-tomcat</artifactId>

                    <scope>provided</scope>

                </dependency>

            </dependencies>

            <build>

                <finalName>ROOT</finalName>

            </build>

        </profile>

</profiles>

Let’s modify the final WAR file name in finalName element. (for my case, output is ROOT.war)

Next, to initialize the Servlet context required by Tomcat by implementing the SpringBootServletInitializer interface:

@SpringBootApplication

public class YourApplication extends SpringBootServletInitializer {

}

Then, execute Maven command package with war profile:

mvn clean package -Pwar

edited Nov 19 '18 at 16:03

answered Nov 19 '18 at 15:46

huytmb

974

With Spring Boot application, you can generate an application jar which contains Embedded Tomcat. You can run a web application as a normal Java application.

If you still want to deploy your application with Tomcat Server.

First, you need to package a WAR application instead of a JAR. For this, you need to change pom.xml with the following content:

<profiles>    

         <profile>

            <id>war</id>

            <properties>

                <packaging.type>war</packaging.type>

            </properties>

            <dependencies>

                <dependency>

                    <groupId>org.springframework.boot</groupId>

                    <artifactId>spring-boot-starter-tomcat</artifactId>

                    <scope>provided</scope>

                </dependency>

            </dependencies>

            <build>

                <finalName>ROOT</finalName>

            </build>

        </profile>

</profiles>

Let’s modify the final WAR file name in finalName element. (for my case, output is ROOT.war)

Next, to initialize the Servlet context required by Tomcat by implementing the SpringBootServletInitializer interface:

@SpringBootApplication

public class YourApplication extends SpringBootServletInitializer {

}

Then, execute Maven command package with war profile:

mvn clean package -Pwar

edited Nov 19 '18 at 16:03

answered Nov 19 '18 at 15:46

huytmb

974

edited Nov 19 '18 at 16:03

answered Nov 19 '18 at 15:46

huytmb

974

answered Nov 19 '18 at 15:46

huytmb

974

answered Nov 19 '18 at 15:46

huytmb

974

Thanks @huytmb.
– Spear A1
Nov 19 '18 at 17:37

add a comment |

Thanks @huytmb.
– Spear A1
Nov 19 '18 at 17:37

Thanks @huytmb.
– Spear A1
Nov 19 '18 at 17:37

add a comment |

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