diff --git a/.github/workflows/java.yml b/.github/workflows/java.yml
new file mode 100644
index 0000000..c5298c3
--- /dev/null
+++ b/.github/workflows/java.yml
@@ -0,0 +1,16 @@
+name: Java CI
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up JDK 21
+        uses: actions/setup-java@v2
+        with:
+          java-version: '21'
+          distribution: 'temurin'
+      - name: Build with Maven
+        run: mvn --batch-mode --update-snapshots package
\ No newline at end of file
diff --git a/backend/src/main/java/com/climify/Client/Interfaces/IWeatherApiClient.java b/backend/src/main/java/com/climify/Client/Interfaces/IWeatherApiClient.java
new file mode 100644
index 0000000..05fc25f
--- /dev/null
+++ b/backend/src/main/java/com/climify/Client/Interfaces/IWeatherApiClient.java
@@ -0,0 +1,7 @@
+package com.climify.Client.Interfaces;
+
+import com.climify.Models.DTO.WeatherResponse;
+
+public interface IWeatherApiClient {
+    WeatherResponse fetchWeather(String city);
+}
diff --git a/backend/src/main/java/com/climify/Client/WeatherApiClient.java b/backend/src/main/java/com/climify/Client/WeatherApiClient.java
index 161ec75..4b8bd67 100644
--- a/backend/src/main/java/com/climify/Client/WeatherApiClient.java
+++ b/backend/src/main/java/com/climify/Client/WeatherApiClient.java
@@ -1,5 +1,6 @@
 package com.climify.Client;
 
+import com.climify.Client.Interfaces.IWeatherApiClient;
 import com.climify.Models.DTO.WeatherResponse;
 import com.climify.Models.Exceptions.CityNotFoundException;
 import com.climify.Models.Exceptions.WeatherApiException;
@@ -8,7 +9,7 @@
 import org.springframework.web.client.RestTemplate;
 
 @Service
-public class WeatherApiClient {
+public class WeatherApiClient implements IWeatherApiClient {
 
     private final RestTemplate restTemplate;
     private final String apiKey;
diff --git a/backend/src/main/java/com/climify/Controllers/WeatherController.java b/backend/src/main/java/com/climify/Controllers/WeatherController.java
index f75beea..3dc158b 100644
--- a/backend/src/main/java/com/climify/Controllers/WeatherController.java
+++ b/backend/src/main/java/com/climify/Controllers/WeatherController.java
@@ -1,7 +1,7 @@
 package com.climify.Controllers;
 
 import com.climify.Models.DTO.WeatherResponse;
-import com.climify.Services.WeatherService;
+import com.climify.Services.Interfaces.IWeatherService;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.media.Content;
 import io.swagger.v3.oas.annotations.media.Schema;
@@ -17,10 +17,10 @@
 @RestController
 @RequestMapping("climify/api/weather")
 public class WeatherController {
-    private final WeatherService weatherService;
+    private final IWeatherService weatherService;
 
     @Autowired
-    public WeatherController(WeatherService weatherService) {
+    public WeatherController(IWeatherService weatherService) {
         this.weatherService = weatherService;
     }
 
diff --git a/backend/src/main/java/com/climify/Services/CacheService.java b/backend/src/main/java/com/climify/Services/CacheService.java
index 1ad2098..040856b 100644
--- a/backend/src/main/java/com/climify/Services/CacheService.java
+++ b/backend/src/main/java/com/climify/Services/CacheService.java
@@ -1,6 +1,7 @@
 package com.climify.Services;
 
 import com.climify.Models.DTO.WeatherResponse;
+import com.climify.Services.Interfaces.ICacheService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.redis.core.RedisTemplate;
 import org.springframework.data.redis.core.ValueOperations;
@@ -9,14 +10,12 @@
 import java.time.Duration;
 
 @Service
-public class CacheService {
+public class CacheService implements ICacheService {
 
-    private final RedisTemplate<String, WeatherResponse> redisTemplate;
     private final ValueOperations<String, WeatherResponse> valueOperations;
 
     @Autowired
     public CacheService(RedisTemplate<String, WeatherResponse> redisTemplate) {
-        this.redisTemplate = redisTemplate;
         this.valueOperations = redisTemplate.opsForValue();
     }
 
diff --git a/backend/src/main/java/com/climify/Services/Interfaces/ICacheService.java b/backend/src/main/java/com/climify/Services/Interfaces/ICacheService.java
new file mode 100644
index 0000000..9783f84
--- /dev/null
+++ b/backend/src/main/java/com/climify/Services/Interfaces/ICacheService.java
@@ -0,0 +1,8 @@
+package com.climify.Services.Interfaces;
+
+import com.climify.Models.DTO.WeatherResponse;
+
+public interface ICacheService {
+    WeatherResponse get(String city);
+    void put(String city, WeatherResponse weatherResponse);
+}
diff --git a/backend/src/main/java/com/climify/Services/Interfaces/IWeatherService.java b/backend/src/main/java/com/climify/Services/Interfaces/IWeatherService.java
new file mode 100644
index 0000000..a60b350
--- /dev/null
+++ b/backend/src/main/java/com/climify/Services/Interfaces/IWeatherService.java
@@ -0,0 +1,7 @@
+package com.climify.Services.Interfaces;
+
+import com.climify.Models.DTO.WeatherResponse;
+
+public interface IWeatherService {
+    WeatherResponse getWeather(String city);
+}
diff --git a/backend/src/main/java/com/climify/Services/WeatherService.java b/backend/src/main/java/com/climify/Services/WeatherService.java
index e10b5de..b86124e 100644
--- a/backend/src/main/java/com/climify/Services/WeatherService.java
+++ b/backend/src/main/java/com/climify/Services/WeatherService.java
@@ -1,19 +1,21 @@
 package com.climify.Services;
 
-import com.climify.Client.WeatherApiClient;
+import com.climify.Client.Interfaces.IWeatherApiClient;
 import com.climify.Models.DTO.WeatherResponse;
 import com.climify.Models.Exceptions.WeatherNotFoundException;
+import com.climify.Services.Interfaces.ICacheService;
+import com.climify.Services.Interfaces.IWeatherService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
 @Service
-public class WeatherService {
+public class WeatherService implements IWeatherService {
 
-    private final WeatherApiClient weatherApiClient;
-    private final CacheService cacheService;
+    private final IWeatherApiClient weatherApiClient;
+    private final ICacheService cacheService;
 
     @Autowired
-    public WeatherService(WeatherApiClient weatherApiClient, CacheService cacheService) {
+    public WeatherService(IWeatherApiClient weatherApiClient, ICacheService cacheService) {
         this.weatherApiClient = weatherApiClient;
         this.cacheService = cacheService;
     }
diff --git a/backend/src/main/resources/application.yaml b/backend/src/main/resources/application.yaml
index 6e27d6d..6299c64 100644
--- a/backend/src/main/resources/application.yaml
+++ b/backend/src/main/resources/application.yaml
@@ -33,8 +33,8 @@ springdoc:
 logging:
   level:
     com.climify: DEBUG
-#    root: DEBUG
 #    org.springframework: DEBUG
+#    root: DEBUG
 
 management:
   endpoints: