About The Project

This project is a distributed key-value in-memory storage system that offers several core functionalities and ensures consistency and availability within a cluster. The system is implemented using Python, Flask, NodeJS, and React. The system is based on the Raft consensus protocol, which is a consensus algorithm for managing a replicated log. It allows a collection of machines to work as a single coherent group that can survive the failures of some of its members.

Features

Core Services

Service	Description	Command	Response
Ping	Check connection with the server	`ping`	`PONG`
Get	Retrieve value associated with a key	`get <key>`	`"value"`
Set	Set a value for a key	`set <key> <value>`	`OK`
Strln	Retrieve length of value associated with a key	`strln <key>`	`<length>`
Del	Delete entry associated with a key	`del <key>`	`"value"`
Append	Append a value to the existing value of a key	`append <key> <value>`	`OK`
Request Log	Request log entries from node	`request_log`	`log_entries`

Distributed System Features

Feature	Description
Membership Change	Mechanism to add and remove server nodes dynamically
Log Replication	Cluster action logging system to replicate logs across nodes for consistency
Heartbeat	Periodic messages to monitor node health and maintain connections
Leader Election	Mechanism for leader node failover to ensure high availability and fault tolerance

How To Use

Clone the repository

git clone https://github.com/Sister20/if3230-tubes-sistress.git
cd if3230-tubes-sistress

Start Server nodes

# Leader node
python3 server.py <ip> <port>
# Follower node
python3 server.py <ip> <port> <leader_ip> <leader_port>

Start Client
```
python3 Client.py <ip> <port>
```
Start Web Interface
```
cd web
npm install
npm run dev
```
Open http://localhost:3000/ in your browser

Contributors

NIM	Name	Task
13521108	Michael Leon Putra Widhi	KV Store App, gRPC Structure, Response, and Handler, Client, Web Client, Unit Test KV Store App, Transaction
13521131	Jeremya Dharmawan Raharjo	Leader Election, Web Client, Unit Test Voting
13521132	Dhanika Novlisariyanti	Replicate Log, Unit Test Replicate Log
13521155	Kandida Edgina Gunawan	Heartbeat, Unit Test Heartbeat
13521172	Nathan Tenka	Membership, Unit Test Membership