We do.
We serve about 3 million pages per day lately, with our hourly peaks
usually in the 400-500K range.
About half of these are CF based - ranging from very simple no-query
pages to pages with a dozen queries. The most hit pages have 2-3
queries on them.
Our DB server is a Sun E450 4x400MHz, 4GB RAM, Oracle 8i.
Our CF Servers are 8 Dell 2300/2400 boxes. All are Dual PIII, ranging
from 400 to about 600MHz. 2GB RAM each, 2x9 or 2x18GB 10K drives
mirrored. They run NT4 and IIS4, CF4.51 SP2. No other software.
With this setup, we're capable of about 1 million CF pages per hour, or
a 4x spike over normal peak traffic. Beyond that, we switch over to
more aggressive DB caching, losing freshness in the content as a result
- but its worth it.
These boxes are load balanced with Big/IP boxes.
Most, if not all, CF Pages return in under 50ms on onloaded servers. On
loaded servers (ie, at about 2x our normal peak traffic (or about 500K
pages per hour)), we see 300-600ms response time on many pages. At full
load (1M pages per hour), response times are in the 1-2 second range.
At this point, we implement query caching on previously uncached
queries, and our response time drops back under a second, as we rise to
about 2M pages per hour.
We can't get past 2M pages per hour (or about 70 pages per second per CF
Server). As we load on clients, response time increases, but thruput
remains constant. Treaking CF threads has not helped positively. Think
we're just at the limit of CF for our application mix.
Hope this helps.
Craig Dudley wrote:
>
> Hi,
>
> Anyone have experience of using Coldfusion with very large usage web sites?
> Somewhere in the region of 240k - 250k page impressions an hour.
>
> If so, what sort of hardware would be needed?
>
> I know it's a bit vague, the site would be fairly basic database searches
> through say, 40-50k records, so we'd probably have to go for a seperate db
> server.
>
> Thanks in advance for any help.
>
> Regards, Craig.
>
>
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