I do realize it orders them differently. Is the first one listed
always the one that it used? i.e.
log_format main '$upstream_addr - $upstream_response_time -
$upstream_status
I looked to see if there was a variable that had the value of the
server that replied…
On a successful request, it shows a simple one line.
10.13.5.14:80 - 0.001 - 200
On a non-successful request (i.e. a 404) I see:
10.13.5.12:80, 10.13.5.14:80 - 0.000, 0.001 - 404, 404
Or, does it try each backend one at a time, and it just happens so
fast it looks like it’s done in parallel? and is it safe to say the
first one listed is the best option?
I plan to use this frontend nginx server for:
ssl (if i need it) - client<->frontend nginx (SSL). frontend nginx
<-> backend (non-SSL)
I am doing maybe 5 or 6 million requests per day right now. All of
them would be proxied through this frontend nginx server. nginx will
be running on a quad-core xeon 3220 w/ 2 gigs of ram available for
this. Would it be a problem?
On Sat, Apr 19, 2008 at 07:51:39PM -0700, mike wrote:
$upstream_status
10.13.5.14:80 - 0.001 - 200
On a non-successful request (i.e. a 404) I see:
10.13.5.12:80, 10.13.5.14:80 - 0.000, 0.001 - 404, 404
Or, does it try each backend one at a time, and it just happens so
fast it looks like it’s done in parallel? and is it safe to say the
first one listed is the best option?
nginx tries them sequentially. As to 404, it seemd that you set
proxy_next_upstream ... http_404 ...;
The $upstream_… variables show all tries.
I plan to use this frontend nginx server for:
ssl (if i need it) - client<->frontend nginx (SSL). frontend nginx
↔ backend (non-SSL)
I am doing maybe 5 or 6 million requests per day right now. All of
them would be proxied through this frontend nginx server. nginx will
be running on a quad-core xeon 3220 w/ 2 gigs of ram available for
this. Would it be a problem?
SSL and gzip are CPU hogs. I can not say about SSL.
Cluster that runs www.rambler.ru/images.rambler.ru/etc serves about
500-900 millions requests per day. Most of them are static files,
but about 22 millions are proxied and some of them are gzipped.
Cluster has several computers, but 2 computers with Athlon 64 X2 Dual
Core 4200+ / 4G are enough.
When computer handles about 7000 request/s, then network interrupt
handler
becames one of the CPU hog, but this is not your case.