Load Balancing (LB)

Help scale horizontally across an ever-increasing number of servers.

LB locations

Between user and web server
Between web servers and an internal platform layer (application servers, cache servers)
Between internal platform layer and database

Algorithms

Least connection
Least response time
Least bandwidth
Round robin
Weighted round robin
IP hash

Implementation

Smart clients
Hardware load balancers
Software load balancers