Add REST endpoints: / and /api/health with MySQL and Redis status

src/main/java/com/vrobot/api/config/RedisConfig.java

@@ -0,0 +1,20 @@
+package com.vrobot.api.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.redis.connection.RedisConnectionFactory;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.data.redis.serializer.StringRedisSerializer;
+
+@Configuration
+public class RedisConfig {
+
+    @Bean
+    public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory connectionFactory) {
+        RedisTemplate<String, String> template = new RedisTemplate<>();
+        template.setConnectionFactory(connectionFactory);
+        template.setKeySerializer(new StringRedisSerializer());
+        template.setValueSerializer(new StringRedisSerializer());
+        return template;
+    }
+}

src/main/java/com/vrobot/api/controller/HealthController.java

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+package com.vrobot.api.controller;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import jakarta.persistence.EntityManager;
+import java.time.LocalDateTime;
+import java.util.HashMap;
+import java.util.Map;
+
+@RestController
+public class HealthController {
+
+    @Autowired
+    private EntityManager entityManager;
+
+    @Autowired
+    private RedisTemplate<String, String> redisTemplate;
+
+    @GetMapping("/")
+    public Map<String, Object> home() {
+        Map<String, Object> response = new HashMap<>();
+        response.put("service", "Spring Boot API");
+        response.put("status", "running");
+        response.put("timestamp", LocalDateTime.now());
+        response.put("endpoints", Map.of(
+            "health", "/api/health",
+            "actuator", "/actuator/health"
+        ));
+        return response;
+    }
+
+    @GetMapping("/api/health")
+    public Map<String, Object> health() {
+        Map<String, Object> response = new HashMap<>();
+        
+        boolean mysqlConnected = false;
+        try {
+            entityManager.createNativeQuery("SELECT 1").getSingleResult();
+            mysqlConnected = true;
+        } catch (Exception e) {
+        }
+
+        boolean redisConnected = false;
+        try {
+            redisTemplate.opsForValue().set("health-check", LocalDateTime.now().toString());
+            String value = redisTemplate.opsForValue().get("health-check");
+            redisConnected = value != null;
+        } catch (Exception e) {
+        }
+
+        response.put("status", mysqlConnected && redisConnected ? "UP" : "DOWN");
+        response.put("timestamp", LocalDateTime.now());
+        response.put("mysql", mysqlConnected ? "connected" : "disconnected");
+        response.put("redis", redisConnected ? "connected" : "disconnected");
+        response.put("message", "Spring Boot API for vrobot.shop");
+        
+        return response;
+    }
+}