Spring-Boot with Hazelcast

DemoCacheApplication.java

package com.example.democache;

import com.hazelcast.config.Config;
import com.hazelcast.config.EvictionPolicy;
import com.hazelcast.config.MapConfig;
import com.hazelcast.config.MaxSizeConfig;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cache.annotation.CacheConfig;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.LinkedList;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.IntStream;

@SpringBootApplication
public class DemoCacheApplication {

    public static void main(String[] args) {
        SpringApplication.run(DemoCacheApplication.class, args);
    }

}


@Configuration
@EnableCaching
class CacheConfiguration {

    private static final String HAZELCAST_LOGGING_TYPE = "hazelcast.logging.type";

    @Bean
    public Config hazelcastConfig() {
        return new Config().setInstanceName("cache")
                .addMapConfig(
                        new MapConfig().setName("speciality")
                                .setMaxSizeConfig(new MaxSizeConfig(200, MaxSizeConfig.MaxSizePolicy.FREE_HEAP_SIZE))
                                .setEvictionPolicy(EvictionPolicy.LRU).setTimeToLiveSeconds(100));
    }

}

interface SpecialityService {

    List<SpecialityDTO> findAll();
}

@Service
@CacheConfig(cacheNames = "speciality")
@Slf4j
class SpecialityServiceImpl implements SpecialityService {

    @Override
    @Cacheable
    public List<SpecialityDTO> findAll() {
        log.info("inside findAll method");
        return IntStream.range(0, 10)
                .mapToObj(i -> SpecialityDTO.of(i, i + "-name"))
                .collect(Collectors.toCollection(LinkedList::new));
    }

}

@RestController
@AllArgsConstructor
class SpecialityResource {

    private final SpecialityService specialityService;

    @GetMapping("/specialities")
    public List<SpecialityDTO> getAllSpecialitys() {
        return specialityService.findAll();
    }

}

@Data(staticConstructor = "of")
class SpecialityDTO {
    final int id;
    final String name;
}

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.1.2.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.example</groupId>
	<artifactId>demo-cache</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>demo-cache</name>
	<description>Demo project for Spring Boot</description>

	<properties>
		<java.version>1.8</java.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-cache</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>com.hazelcast</groupId>
			<artifactId>hazelcast</artifactId>
		</dependency>
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
			<version>1.18.4</version>
			<scope>compile</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>

</project>