How can we cache the result of gethostbyname?

Question

My proxy server is spending a lot of time resolving the domain names,is there a way to make gethostbyname cache the result?

Slightly tangential, but `gethostbyname` is an obsolete function you should not be using. `man getaddrinfo`. — R.. GitHub STOP HELPING ICE, May 23 '11 at 21:01

score 2 · Accepted Answer · answered May 23 '11 at 08:28

2

answered May 23 '11 at 08:28

Gunther Piez

do you mean that after this service is up,subsequent calls by `gethostbyname` will automatically be cached? – DriverBoy May 23 '11 at 08:34
This is exactly what it does. Just have a look at the man page. Caching of negative and positive results can be configured separatley, AFAIK – Gunther Piez May 23 '11 at 09:23
Sounds like a silly system-specific approach to doing something that could just as easily be accomplished with a caching/proxy nameserver on localhost... – R.. GitHub STOP HELPING ICE May 23 '11 at 21:00
Wrong point of view. A caching name server is the heavyweight approach to do something which can be easily accomplished by nscd :-) nscd does does have a slightly different scope, as it does cache `getpwnam()` and `getgrpnam()`. Very effective in avoiding heavy brain damage if you are on a network with a lagging NIS server. – Gunther Piez May 23 '11 at 22:00

1 Answers1