İşte müşteri bilgilerini Redis cache'de tutan basit bir Spring Boot uygulamasının örnek senaryosu ve kodları:
### Gereksinimler
- Spring Boot
- Spring Data JPA
- Spring Data Redis
- H2 Database (veya herhangi bir veritabanı)
- Redis Server
### 1. Proje Yapılandırması
#### `pom.xml` veya `build.gradle`
```xml
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
```
### 2. Redis ve JPA Yapılandırması
#### `application.properties`
```properties
# H2 Database Configuration
spring.datasource.url=jdbc:h2:mem:testdb
spring.datasource.driverClassName=org.h2.Driver
spring.datasource.username=sa
spring.datasource.password=password
spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
spring.h2.console.enabled=true
# Redis Configuration
spring.redis.host=localhost
spring.redis.port=6379
```
### 3. Entity Sınıfı
#### `Customer.java`
```java
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import java.io.Serializable;
@Entity
public class Customer implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
private String name;
private String email;
// Getters and Setters
}
```
### 4. Repository
#### `CustomerRepository.java`
```java
import org.springframework.data.jpa.repository.JpaRepository;
public interface CustomerRepository extends JpaRepository<Customer, Long> {
}
```
### 5. Service Sınıfı
#### `CustomerService.java`
```java
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;
import java.util.Optional;
@Service
public class CustomerService {
@Autowired
private CustomerRepository customerRepository;
@Cacheable(value = "customerCache", key = "#id")
public Optional<Customer> getCustomerById(Long id) {
return customerRepository.findById(id);
}
}
```
### 6. Controller
#### `CustomerController.java`
```java
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import java.util.Optional;
@RestController
public class CustomerController {
@Autowired
private CustomerService customerService;
@GetMapping("/customers/{id}")
public Optional<Customer> getCustomer(@PathVariable Long id) {
return customerService.getCustomerById(id);
}
}
```
### 7. Redis Cache Yapılandırması
#### `RedisConfig.java`
```java
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import java.time.Duration;
@Configuration
@EnableCaching
public class RedisConfig {
@Bean
public RedisConnectionFactory redisConnectionFactory() {
return new LettuceConnectionFactory();
}
@Bean
public RedisTemplate<String, Object> redisTemplate() {
RedisTemplate<String, Object> template = new RedisTemplate<>();
template.setConnectionFactory(redisConnectionFactory());
template.setKeySerializer(new StringRedisSerializer());
template.setValueSerializer(new GenericJackson2JsonRedisSerializer());
return template;
}
@Bean
public RedisCacheManager cacheManager() {
RedisCacheConfiguration cacheConfig = RedisCacheConfiguration.defaultCacheConfig()
.entryTtl(Duration.ofMinutes(10))
.disableCachingNullValues();
return RedisCacheManager.builder(redisConnectionFactory())
.cacheDefaults(cacheConfig)
.build();
}
}
```
### 8. Ana Uygulama Sınıfı
#### `Application.java`
```java
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
```
Bu örnek ile müşteri bilgilerini Redis cache'de tutan basit bir Spring Boot uygulaması oluşturabilirsiniz. Uygulama çalıştığında, `/customers/{id}` endpoint'ine yapılan isteklerde müşteri bilgileri önce Redis cache'den kontrol edilecek, eğer cache'de bulunmazsa veritabanından alınacak ve cache'e kaydedilecektir.
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