Multithreaded Key-Value Store with RPC and Paxos

Overview

The Multithreaded Key-Value Store is a Java-based distributed application designed to provide a reliable and fault-tolerant solution for managing key-value data across multiple nodes. The system uses Remote Procedure Calls (RPC) for communication between clients and servers and employs the Paxos consensus algorithm to ensure consistency in a distributed environment. This project demonstrates the principles of distributed computing, focusing on achieving consistency, fault tolerance, and efficient handling of concurrent requests.

Technologies Used

• Java: The primary programming language used for implementing the application, chosen for its robustness, object-oriented capabilities, and extensive libraries for networking and multithreading.
• Remote Procedure Call (RPC): Enables remote communication between the client and server components, simulating real-world distributed systems.
• Paxos Consensus Algorithm: A distributed consensus protocol that ensures agreement on a single value among a group of nodes, providing consistency even in the presence of network failures.
• Multithreading: Allows concurrent processing of multiple client requests, enhancing the performance and responsiveness of the server.
• Java Archive (JAR) Files: Used for packaging compiled Java classes and associated metadata into a single file, simplifying deployment and execution.

Features

• Distributed Key-Value Storage: Provides a scalable and reliable key-value store that can manage data across multiple distributed nodes.
• Paxos-Based Consensus: Ensures that all nodes in the system agree on the order of operations, maintaining consistency even in a distributed environment.
• Multithreaded Server Operations: Supports concurrent client connections and operations, improving system throughput and responsiveness.
• RPC Communication: Facilitates seamless communication between clients and servers, allowing for dynamic and flexible interactions in a distributed setup.
• Fault Tolerance and High Availability: Designed to handle server failures gracefully, ensuring continuous operation and data integrity through the Paxos protocol.
• Modular and Extensible Design: The codebase is structured to allow easy extension and modification, supporting future enhancements and scalability.

Project Structure

The project is organized into several key directories, each containing specific components of the application:

• Client: Contains the client-side code responsible for interacting with the server.
• ProcessRequest: Manages the processing of client requests on the server side.
• Server: Contains the server-side implementation, including classes related to the Paxos protocol and key-value store management.
• jar: Contains compiled JAR files for easy execution.
• out: Holds compiled classes or outputs generated during the build process.
• META-INF: Stores metadata related to the Java archive files (JAR).
• Documentation and Diagrams: Provides visual representations and summaries to aid understanding of the system's architecture and operations.

Steps to Execute

1. Navigate to the JAR Directory: Go to the /jar folder in your terminal. This folder contains the compiled JAR files for both the client and server.

2. Start the Server: Open a terminal and execute the following command to start the server:

   java -jar Server.jar <port> <remoteObject>