What is this?

A simple Node.js load balancer.

Originally made to balance/cluster legacy applications that cant handle many TCP connections.

Public port e.g. 8000  ---->  basePort
Public port e.g. 8000  ---->  basePort+1
Public port e.g. 8000  ---->  basePort+2

Features

• Ability to kill the listener when slots are full. To avoid TCP SYN packets going out.

• Idle timeout

• MAX connections per server

• As many instances, routing moves to next instance when all slots are down

• Native Node.js

Run

node loadBalancer.js

config.json

Just edit the config.json file to get started and routing

Public facing port of the balancer

"publicPort" 	: "8000",

IP of destination server (that will be balanced)

"DLIP"			: "127.0.0.1",

Base port of clusters/servers that are load balanced. Base port increments per instance. e.g. 3 instances -> 7000, 7001, 7002

"DLbasePort" 	: "7000",

Downloader instances

"instances"	 	: "3",

How many connections does the target take simultaneously

"maxConnections": "2",

When theres no data flowing when to kill the socket. IN Milliseconds

"sockIdleTime"  : "80000",

When slots are full: true - will accept & kill connection | To know when we are getting more calls than we can handle false - will not respond to anything when slots are full

"listenWhenNoSlot":  true

MIT Licence. Marios Georgiou 2014