djangoloadbalancer 0.0.31

Package enabling to load balance requests to databases in django projects

DjangoLoadBalancer

Package enabling to load balance requests to databases in django projects.

Instalation

pip install djangoloadbalancer

How to use

1. Rather than extending models.Model, your models must extend LoadBalancerModel, example:

from django.db import models
from DjangoLoadBalancer.DjangoLoadBalancer import LoadBalancerModel

class Destination(LoadBalancerModel):
    name = models.CharField(max_length=100)
    desc = models.CharField(max_length=100)

2. Specify load balancer's settings in project's settings.py file, examples:

LOAD_BALANCER={
    'CUD_ALGORITHM': 'MULTITHREADING',
    'R_ALGORITHM': {
        'NAME':'ROUND_ROBIN',
    },
    'DATABASES': ['default','DB1','DB2'],
    'WAIT_TIME': 10,
}

LOAD_BALANCER={
    'CUD_ALGORITHM': 'MULTITHREADING',
    'R_ALGORITHM': {
        'NAME':'INTERVAL_TIME',
        'INTERVAL' : 5
    },
    'DATABASES': ['default','DB1','DB2'],
    'WAIT_TIME': 10,
}

• R_ALGORITHM - algorithm that will determine to which database will be the next READ query sent
  • ROUND_ROBIN - next database for READ query is just the next in list
  • INTERVAL_TIME - regularly sends queries to databases to determine their response time. This response time is later used to choose database for READ query - the database with the smallest response time will be chosen. Queries to determine response time are send every INTERVAL seconds.
• DATABASES - names of databases from settings.py's DATABASES that will be used for loadbalancing
• WAIT_TIME - amount of time that load balancer will wait to check if the database, that went down, is up