#26 pharmacy: add redis

road/build.gradle

@@ -28,6 +28,9 @@ dependencies {
     implementation 'org.springframework.boot:spring-boot-starter-web'
     implementation 'org.springframework.retry:spring-retry'
 
+    // redis
+    implementation 'org.springframework.boot:spring-boot-starter-data-redis'
+
     implementation 'io.seruco.encoding:base62:0.1.3'
 
     // handlebars

road/src/main/java/com/example/road/config/RedisConfig.java

@@ -0,0 +1,34 @@
+package com.example.road.config;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+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.StringRedisSerializer;
+
+@Configuration
+public class RedisConfig {
+
+    @Value("${spring.redis.host}")
+    private String redisHost;
+
+    @Value("${spring.redis.port}")
+    private int redisPort;
+
+    @Bean
+    public RedisConnectionFactory redisConnectionFactory() {
+        return new LettuceConnectionFactory(redisHost, redisPort);
+    }
+
+    @Bean
+    public RedisTemplate<String, Object> redisTemplate() {
+        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
+        redisTemplate.setConnectionFactory(redisConnectionFactory());
+        redisTemplate.setKeySerializer(new StringRedisSerializer());
+        redisTemplate.setHashKeySerializer(new StringRedisSerializer());
+        redisTemplate.setHashValueSerializer(new StringRedisSerializer());
+        return redisTemplate;
+    }
+}

road/src/test/groovy/com/example/road/pharmacy/cache/RedisTemplateTest.groovy

@@ -0,0 +1,60 @@
+package com.example.road.pharmacy.cache
+
+import com.example.road.AbstractIntegrationContainerBaseTest
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.data.redis.core.RedisTemplate
+
+class RedisTemplateTest extends AbstractIntegrationContainerBaseTest {
+
+    @Autowired
+    private RedisTemplate redisTemplate;
+
+    def "RedisTemplate String operations"() {
+        given:
+        def valueOps = redisTemplate.opsForValue()
+        def key = "key"
+        def value = "hello"
+
+        when:
+        valueOps.set(key, value)
+
+        then:
+        def result = valueOps.get(key)
+        result == value
+    }
+
+    def "RedisTemplate set operations"() {
+        given:
+        def setOps = redisTemplate.opsForSet()
+        def key = "setKey"
+
+        when:
+        setOps.add(key, "h", "e", "l", "l", "o")
+
+        then:
+        def size = setOps.size(key)
+        size == 4
+    }
+
+    def "RedisTemplate hash operations"() {
+        given:
+        def hashOps = redisTemplate.opsForHash()
+        def key = "hashKey"
+        def subKey = "subKey"
+        def value = "value"
+
+        when:
+        hashOps.put(key, subKey, value)
+
+        then:
+        def result = hashOps.get(key, subKey)
+        result == value
+
+        def entries = hashOps.entries(key)
+        entries.keySet().contains(subKey)
+        entries.values().contains(value)
+
+        def size = hashOps.size(key)
+        size == entries.size()
+    }
+}