Examples#

Ready-to-run applications in examples/ to try Verbatime on. Each one runs in Docker Compose and builds the agent from the repository.

You need Docker with Compose v2, and JDK Mission Control with the Verbatime plugin.

Try one#

Start an example.

cd examples/spring-boot-mvc
docker compose up --build

Within 60 seconds, connect JDK Mission Control to localhost:7091 and press Start recording. The roots are already set, and startup is recorded too.

Send load for 30 seconds.

docker compose --profile load run --rm load

Press Stop recording, then shut the example down.
```
docker compose down -v
```

Run one example at a time. They all use port 8080 for HTTP and port 7091 for JMX.

Every example runs the same small order workload, so their recordings are easy to compare.

Example	What it shows
`plain-httpserver`	The JDK's built-in HTTP server, with no framework
`spring-boot-mvc`	Spring Boot MVC on embedded Tomcat
`thymeleaf`	Spring Boot MVC rendering HTML with Thymeleaf
`scheduled-task`	Spring Boot running the work from `@Scheduled`
`undertow`	Embedded Undertow with a blocking handler
`helidon-se`	Helidon SE on virtual threads
`micronaut`	Micronaut on Netty
`quarkus`	Quarkus REST in JVM mode

Example	What it shows
`tomcat-war`	A WAR of plain servlets on Tomcat
`jetty-war`	The same WAR on Jetty
`wildfly-war`	The same WAR on WildFly, which loads classes through JBoss Modules
`open-liberty-war`	The same WAR on Open Liberty, an OSGi runtime on OpenJ9

Each of these starts PostgreSQL in its own container.

Example	What it shows
`jdbc-hibernate`	Spring Data JPA with Hibernate and HikariCP
`mybatis`	A MyBatis mapper
`r2dbc`	Reactive database access with Spring Data R2DBC

Example	What it shows
`spring-boot-webflux`	Spring Boot WebFlux on Reactor Netty
`virtual-threads`	`spring-boot-mvc` on virtual threads
`ktor-coroutines`	A Kotlin suspend handler in Ktor that switches dispatchers
`kafka-consumer`	Spring Boot sending to and consuming from Kafka
`grpc`	A grpc-java unary service

These record from startup to exit and write the recording to their recordings/ directory. See Agent alone.

Example	What it shows
`junit-maven`	JUnit tests run by Maven Surefire
`junit-gradle`	JUnit tests run by Gradle
`spring-batch`	A Spring Batch job that runs and exits

Set these when you run docker compose up.

Variable	What it does
`VERBATIME_EXTRA`	Adds agent arguments
`JMX_HOST`	The host name JDK Mission Control connects to, instead of `localhost`
`VERBATIME_JVM_EXTRA`	Adds JVM options. Only in `open-liberty-war`

Set the same values for the load command too. Otherwise Compose restarts the application, and the recording with it.