DatabaseBalancer
A wrapper Utility that randomizes database server selection based on the supplied instances server load and cpu usage [ABANDONED]*
WHY CHECK IT OUT?
- A beginner's guide to Load balancing Database instances.
- How to read server information remotely - [ I actually used this with Arduino to create Alerts via LED's and Speakers for an AWS instance ]
HOW TO USE
from src import balancer
from src.logger import Logger
from src.db_instances import DBInstance
# enable debugging
Logger.debug = True
# create our balancers object
myBalancer = balancer.Balancer( )
# create our database instances
instance1 = DBInstance('127.0.0.1', 'root', '' )
instance2 = DBInstance('192.168.1.27', 'boni', '', 'store')
# Add our instances to the balancer
myBalancer.add_db_instance( instance1 )
myBalancer.add_db_instance( instance2 )
# Connect to all instances
# NB: ->>>>Fails if one of them cannot be connected to ->>> Not implemented for now
myBalancer.connect_all()
# Get any failed connections
print myBalancer.get_total_failed_connections()
# Go ahead and select one instance to use in the next connection (selects less busy one)
# NB: Returns instance object->
instance = myBalancer.choose_instance( )
print instance.to_string()
# close all connections
myBalancer.disconnect_all()Thats it