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+# RATE LIMITER WITH REDIS
+
+<p align="center">
+    <img src="screenshots/spring_boot_rate_limiter_redis.png" alt="Main Information" width="850" height="600">
+</p>
+
+### 📖 Information
+
+<ul style="list-style-type:disc">
+  <li>This application is a <b>Spring Boot application</b> demonstrating rate limiting with Redis for user management operations.</li>
+  <li>
+    <b>Explanation:</b>
+    <ul>
+      <li><b>UserController:</b> The API endpoint for managing user information. It includes methods to handle creating, retrieving, updating, and deleting user data. This controller interacts with the UserService to perform these operations.</li>
+      <li><b>UserService:</b> Contains the business logic for user management. It performs CRUD operations on the User entity and interacts with the RateLimiterService to apply rate limiting rules.</li>
+      <li><b>RateLimiterService:</b> Utilizes Redis to track and enforce rate limiting rules. It ensures that the number of requests made by a user does not exceed the specified limit within a given time window.</li>
+      <li><b>UserRepository:</b> Extends Spring Data JPA's JpaRepository, providing methods for performing database operations on user entities. This layer abstracts the data access operations, making it easier to manage user data.</li>
+      <li><b>Redis Configuration:</b> Redis is configured as a cache to store rate limiting data. This configuration ensures high performance and scalability in tracking and enforcing rate limits.</li>
+      <li><b>Validation:</b> The application uses Hibernate Validator for validating user input. This ensures that the data passed to the API endpoints is in the correct format and adheres to the defined constraints.</li>
+      <li><b>Exception Handling:</b> Custom exception handling mechanisms are implemented to manage various error scenarios, such as user not found, email already exists, and rate limit exceeded.</li>
+    </ul>
+  </li>
+</ul>
+
+### Explore Rest APIs
+
+<table style="width:100%">
+  <tr>
+      <th>Method</th>
+      <th>Url</th>
+      <th>Description</th>
+      <th>Request Body</th>
+      <th>Header</th>
+      <th>Valid Path Variable</th>
+      <th>Request Param</th>
+      <th>No Path Variable</th>
+  </tr>
+  <tr>
+      <td>POST</td>
+      <td>/api/v1/users/save</td>
+      <td>Create a new user</td>
+      <td>CreateUserRequest</td>
+      <td></td>
+      <td></td>
+      <td></td>
+      <td></td>
+  </tr>
+  <tr>
+      <td>GET</td>
+      <td>/api/v1/users/{id}</td>
+      <td>Retrieve a user by ID</td>
+      <td></td>
+      <td></td>
+      <td>{id} - Valid UUID</td>
+      <td></td>
+      <td></td>
+  </tr>
+  <tr>
+      <td>PUT</td>
+      <td>/api/v1/users/{id}</td>
+      <td>Update an existing user</td>
+      <td>UpdateUserRequest</td>
+      <td></td>
+      <td>{id} - Valid UUID</td>
+      <td></td>
+      <td></td>
+  </tr>
+  <tr>
+      <td>DELETE</td>
+      <td>/api/v1/users/{id}</td>
+      <td>Delete a user by ID</td>
+      <td></td>
+      <td></td>
+      <td>{id} - Valid UUID</td>
+      <td></td>
+      <td></td>
+  </tr>
+  <tr>
+      <td>GET</td>
+      <td>/api/v1/users</td>
+      <td>Retrieve a paginated list of users</td>
+      <td>UserPagingRequest</td>
+      <td></td>
+      <td></td>
+      <td></td>
+      <td></td>
+  </tr>
+</table>
+
+
+---
+### Technologies
+
+
+- Java 21
+- Spring Boot 3.0
+- Restful API
+- Lombok
+- Maven
+- Junit5
+- Mockito
+- Integration Tests
+- Docker
+- Docker Compose
+- CI/CD (Github Actions)
+- Postman
+- Spring Bean Validation
+
+---
+### Postman
+
+```
+Import postman collection under postman_collection folder
+```
+
+---
+### Prerequisites
+
+#### Define Variable in .env file
+
+```
+DATABASE_USERNAME={DATABASE_USERNAME}
+DATABASE_PASSWORD={DATABASE_PASSWORD}
+```
+
+---
+- Maven or Docker
+---
+
+
+### Docker Run
+The application can be built and run by the `Docker` engine. The `Dockerfile` has multistage build, so you do not need to build and run separately.
+
+Please follow directions shown below in order to build and run the application with Docker Compose file;
+
+```sh
+$ cd ratelimiter
+$ docker-compose up -d
+```
+
+If you change anything in the project and run it on Docker, you can also use this command shown below
+
+```sh
+$ cd ratelimiter
+$ docker-compose up --build
+```
+
+---
+### Maven Run
+To build and run the application with `Maven`, please follow the directions shown below;
+
+```sh
+$ cd ratelimiter
+$ docker run --name redis -p 6379:6379 -d redis
+$ mvn clean install
+$ mvn spring-boot:run
+```
+
+---
+### Docker Image Location
+
+```
+https://hub.docker.com/repository/docker/noyandocker/ratelimiter/general
+```
+
+---
+### Screenshots
+
+<details>
+<summary>Click here to show the screenshots of project</summary>
+    <p> Figure 1 </p>
+    <img src ="screenshots/docker1.PNG">
+    <p> Figure 2 </p>
+    <img src ="screenshots/1.PNG">
+    <p> Figure 3 </p>
+    <img src ="screenshots/2.PNG">
+    <p> Figure 4 </p>
+    <img src ="screenshots/3.PNG">
+    <p> Figure 5 </p>
+    <img src ="screenshots/4.PNG">
+    <p> Figure 6 </p>
+    <img src ="screenshots/5.PNG">
+    <p> Figure 7 </p>
+    <img src ="screenshots/6.PNG">
+    <p> Figure 8 </p>
+    <img src ="screenshots/docker2.PNG">
+</details>
+
+### Contributors
+
+- [Sercan Noyan Germiyanoğlu](https://github.com/Rapter1990)
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