Which one is better to query from - loopback-ip or interface-ip?

Question

I have memcache server listing on 0.0.0.0:11211. I have to query the memcached server from the same box. Which one do you think is better: querying from 127.0.0.1:11211 or from interface-ip:11211. Please explain why also ?

See [What's the difference between ip address 0.0.0.0 and 127.0.0.1?](http://serverfault.com/q/78048/126632) — Michael Hampton, Mar 11 '13 at 08:20
I know the difference . What i meant is which one better , querying 127.0.0.1 or interface-ip ? — pradeepchhetri, Mar 11 '13 at 08:33

score 1 · Answer 1 · edited Sep 05 '18 at 15:45

1

I have to query the memcached server from the same box.

Why not use Unix socket to avoid TCP/IP overhead:

$ memcached -h
memcached 1.2.8
repcached 2.2
-p <num>      TCP port number to listen on (default: 11211)
-U <num>      UDP port number to listen on (default: 11211, 0 is off)
-s <file>     unix socket path to listen on (disables network support)

See also: Unix domain sockets vs TCP Sockets

edited Sep 05 '18 at 15:45

Anthony Geoghegan

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answered Mar 11 '13 at 08:39

quanta

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The thing is that i am configuring graphite to use memcached.. which can only use tcp/ip sockets. – pradeepchhetri Mar 11 '13 at 09:07

score -1 · Answer 2 · answered Mar 11 '13 at 08:33

-1

querying to 127.0.0.1:11211 is better as compared to querying memcached on interface ip.

answered Mar 11 '13 at 08:33

Abhishek Anand Amralkar

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Please justify your answer with proper reasons – pradeepchhetri Mar 11 '13 at 08:36
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Not a complete answer - the question specifically asks "please explain why also". – Jenny D Mar 11 '13 at 10:20

Which one is better to query from - loopback-ip or interface-ip?

2 Answers2