nslookup -type=any stanford.edu :
The -type=any parameter allows us to get all
the DNS records for that domain,
including the mail servers, etc.
$ nslookup -type=any stanford.edu
;; Truncated, retrying in TCP mode.
Server: 10.168.243.90
Address: 10.168.243.90#53
Non-authoritative answer:
stanford.edu mail exchanger = 10 mxa-
00000d03.gslb.pphosted.com.
stanford.edu mail exchanger = 10 mxb-
00000d03.gslb.pphosted.com.
stanford.edu nameserver = ns5.dnsmadeeasy.com.
stanford.edu nameserver = ns6.dnsmadeeasy.com.
stanford.edu nameserver = ns7.dnsmadeeasy.com.
stanford.edu nameserver = argus.stanford.edu.
stanford.edu nameserver =
atalante.stanford.edu.
stanford.edu nameserver =
avallone.stanford.edu.
stanford.edu
origin = argus.stanford.edu
mail addr = hostmaster.stanford.edu
serial = 2019138199
refresh = 1200
retry = 600
expire = 1296000
minimum = 1800Load Balancing
Load balancing is the process of distributing user
requests across multiple servers. The goal is to ensure
that no single server bears too much demand. In essence,
load balancers are like virtual servers, receiving all user
requests and forwarding these requests based on the load
balancer’s policy to one of the servers that host the
website. The load balancer attempts to ensure that each
server receives a similar number of requests. Many load
balancers are capable of monitoring servers and
compensating for any servers that become unavailable.
By spreading the work evenly, load balancing improves
application responsiveness.