Create readme.md

Author: javaHelper

04.using-client-side-loadbalancing/readme.md

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+# Using Client Side Load Balancing - using Spring Cloud LoadBalancer
+
+Note: Please make sure to start the address-service on 8082 and 8083 ports.
+
+- Eureka: http://localhost:8761/
+
+<img width="1419" alt="Screenshot 2022-12-26 at 1 00 56 PM" src="https://user-images.githubusercontent.com/54174687/209518480-3b2af23c-2fcc-460d-bd26-7fdaa57865d2.png">
+
+-----
+
+HTTP GET: http://localhost:8080/api/student/getById/1
+
+```json
+{
+    "id": 1,
+    "firstName": "Raj",
+    "lastName": "Dave",
+    "email": "raj_dave@yahoo.com",
+    "addressResponse": {
+        "addressId": 1,
+        "street": "Delhi",
+        "city": "Happy Street"
+    }
+}
+```