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7 Cards in this Set

  • Front
  • Back
What is a load balancing predictor?
an algorithm that determines how traffic is distributed among the application servers (real servers)
This predictor sends the request to the real server that currently has the fewest active connections with clients
Least connections
This predictor directs the service request to the next server, and treats all servers equally regardless of the number of connections
Round robin
This predictor makes its server selections exactly like the Weighted Round Robin predictor but distributes the load to available barrel processors (BPs) within the ServerIron ADX.
Static Weighted Round Robin
This predictor assigns a performance weight to each server. Similar to least connections, except that servers with a higher weight value receive a larger percentage of connections at a time
Weighted and Enhanced load balancing
With this predictor, the real server with the greatest weight is allocated a connection first, but then the next connection is allocated to the real server with the next greatest weight, and then to the server with the next greatest weight on-down-the-line, until all servers have received their first connection. The process repeats with each real server getting a connection in sequence until each real server has connections equal to its assigned weight
enhanced weighted load-balancing
TrafficWorks provides this predictor that enables ServerIron to make load balancing decisions using real time server resource usage information, such as CPU utilization and memory consumption. The ServerIron retrieves this information (through the SNMP protocol) from MIBs available on the application servers.
dynamic weighted load-balancing