Raft Consensus Protocol (dRaft)

Poster from Unsplash

This program is a simple simulation of the Raft Consensus Protocol. The program is implemented in golang.

How to Run 🚀

As first node (automatically become leader)

go run server/server.go <ip server> <port server>

As follower node

go run server/server.go <ip server> <port server> <ip leader server> <port leader server>

go run web-client/web_client.go <ip server> <port server>

go run client/client.go <ip server> <port server>

Notes: Make sure the leader server address is an active leader node, if not the terminal will prompt the correct leader address

Ping
Checking the server connection.
```
ping
```
The server will response with:
```
Pong!
```

Get
Get a value with a key.
```
get <key>
```
The server will response with:
```
<value>
```
If the key doesn’t exist, it will return empty string.

Set
Set new value for specific key.
```
set <key> <value>
```
The server will response with:
```
OK
```
If the key doesn’t exist, new pair will be created. This command only available for leader node, if not it will return error message and a correct leader address. This command will be logged.

Strln
Get the length of a value with a key.
```
strln <key>
```
The server will response with:
```
<value length>
```
If the key doesn’t exist, it will return -1.

Del
Delete value for specific key.
```
del <key>
```
The server will response with:
```
<deleted value>
```
If the key doesn’t exist, it will return empty string. This command only available for leader node, if not it will return error message and a correct leader address. This command will be logged.

Append
Append value for specific key.
```
append <key> <value>
```
The server will response with:
```
OK
```
If the key doesn’t exist, new pair will be created. This command only available for leader node, if not it will return error message and a correct leader address. This command will be logged.

Switch
Switch server port.
```
switch <ip server> <port server>
```
The server will response with:
```
OK
```

Request Log
Get server’s log.
```
request_log
```
The server will response with:
```
<server log>
```

Made by Team dRaft