The letter for today in the Networking ABC's is the letter "P".  "P" has a lot of words that relate to networking such as Persistence, Pipelining, Ports, Packets, and PAM but I chose the following word because it had the best picture associated with it.  Today's word is "Pool"

"P" is for Pool

Pool

Pronounced: Pool

In networking terms, a pool refers to a logical group of pool members.  A load balancing system will balance requests to the pool members within a pool based on the load balancing method and persistence method that is chosen as part of the configuration of the virtual server the pool is part of.  Pools form the basis of a scalable network architecture in the fact that when capacity is reached on your current physical resources (ie backend servers), more servers can be added to the pool and virtualized to look the same to the end user.