Spring-Boot + Jersey Example with Spring-CLI

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These are the first steps of creating a spring-boot project. However, even compiled into jar files, the cold start time still takes long After about 140,000 requests, the service response time would become stable.

If you are still a spring framework user, be sure to switch to Akka framework and give it a try.

Build Steps

• Generate:

spring init -d=jersey --build=gradle --lang=groovy app

• Create Config

package com.example.app

import org.springframework.context.annotation.Configuration
import org.glassfish.jersey.server.ResourceConfig

@Configuration
class JerseyConfig extends ResourceConfig {
    def JerseyConfig() {
        return register(TestResource.class);
    }
}

• Add Resource

package com.example.app

import javax.ws.rs.GET
import javax.ws.rs.Produces
import javax.ws.rs.Pah

@Path("/")
class TestResource {
    @GET
    @Produces("text/plain")
    def String getMessage() {
        return "Hello World!";
    }
}

• Test Run:

cd app
./gradlew bootRun

• List Built Components:

cd app
./gradlew components

• Build:

cd app
./gradlew bootRepackage
# The result jar resides in build/libs/*
# you could run java -jar on such file directly for execution
# and be easier to deploy to other places