Re: Apache24 - how to optimize httpd.conf

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



In many cases it will only be a few packets anyway so won't actually make that much difference!

The point is that it is better to stop the request in the first place by setting the appropriate expires/cache control header... than use the etag mechanism...

James

On 09/06/2015 14:56, Frederik Nosi wrote:
Hi James,

On 06/09/2015 02:36 PM, James Smith wrote:
Yes - it is the request over head - the client will still make the request at which point the server has got to decide has it changed before even -   which for most static requests is the heaviest (slowest) part before returning the not-changed response - and then serving the content!

But at this point the server in case of a positive match will send just a 304 reply with no content, thus saving bandwith and time (due to eventual roundtrips) no?


You are better to:

(a) set near future or mid future headers [ expires in a month or in a year]

Sure, the best request is the one that does not even come :-)

(b) alter filenames if you significantly change the file contents [ we use MD5 of content for js/css ]


This only if you're in the posisition to decide the site layout though.

Note this is "hyper-tuning" of Apache... some people may want to enable it - it was originally set up when most users were on 28K/33.6K modems (or slower) and the transfer of data was the slow part of the equation!

James

[...]


Thanks,
Frederik


-- The Wellcome Trust Sanger Institute is operated by Genome Research Limited, a charity registered in England with number 1021457 and a company registered in England with number 2742969, whose registered office is 215 Euston Road, London, NW1 2BE.

[Index of Archives]     [Open SSH Users]     [Linux ACPI]     [Linux Kernel]     [Linux Laptop]     [Kernel Newbies]     [Security]     [Netfilter]     [Bugtraq]     [Squid]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Samba]     [Video 4 Linux]     [Device Mapper]

  Powered by Linux