Distributed Key-Value Store System

This repository contains the implementation of a simple distributed key-value store system using Java Remote Method Invocation (RMI). The system comprises multiple replica servers and a client that can interact with the store.

Components

The project consists of two main components:

Server: The Server class represents a replica server in the distributed key-value store system. It implements the RemoteInterface for remote method invocation. Each replica server maintains a local key-value store and communicates with other replicas to ensure consistency.
Client: The Client class serves as the client to the distributed key-value store system. It connects to the available replica servers, sends requests to the coordinator replica, and handles PUT, GET, and DELETE operations.

Setup

Compile the code:
```
javac Server.java
javac Client.java
```

Starting the Replica Servers

To start the replica servers, you need to run the Server class with the number of replicas you want to create. The first replica server will become the coordinator.

java Server

You will be prompted to enter the number of replicas. After entering the number, the server will start creating replica instances.

Using the Client

Once the replica servers are running, you can run the Client class to interact with the distributed key-value store system.

java Client

The client will prompt you with options for PUT, GET, DELETE, or exiting the system. You can follow the on-screen instructions to perform the desired operation.

Starting Replica Servers

The main method of the Server class allows you to start multiple replica servers based on the number of replicas you want. The first replica will become the coordinator. The method uses the startServer private method to start each server instance.

Server Working Demo

Enter the number of replicas:
5
-------------------------------------
The Replica 1 is the Coordinator.
Server started on port: 1010
Server started on port: 1011
Server started on port: 1012
Server started on port: 1013
Server started on port: 1014
[Time: 07-22-2023 17:22:21.419] PUT request processed.
[Time: 07-22-2023 17:22:26.033] GET request processed

Client Working Demo

Connected to Server Replica 1
Connected to Server Replica 2
Connected to Server Replica 3
Connected to Server Replica 4
Connected to Server Replica 5
Choose an option:
1. PUT
2. GET
3. DELETE
4. Exit
1
Enter the values as: key=value
Enter key-value pair: 1=a
Choose a replica to connect (1-5 only):
2
<Time: 07-22-2023 17:22:21.450> PUT request processed.
-------------------------------------
Choose an option:
1. PUT
2. GET
3. DELETE
4. Exit
2
Enter key: 1
Choose a replica to connect (1-5 only):
3
<Time: 07-22-2023 17:22:26.035> Response: Value: a
-------------------------------------

arps18/MultiThreadedKV_RPC