Re: middle tier recommendations

From: Param R. (pr_at_nospam.com)
Date: 11/29/04 

Date: Mon, 29 Nov 2004 08:48:32 -0600

All my apps are asp.net. How can I switch from IIS5 Compatibility mode to
full iis6 mode? Is it a registry setting?

thanks!

"Nick Malik" <nickmalik@hotmail.nospam.com> wrote in message
news:jNyqd.683468$8_6.429900@attbi_s04...
> Hi Param
>
>> 1. I forgot to mention I do have a standby database server for failover.
> The
>> only thing is that it is a cold standby. We are running Standard Edition.
>> Currently we cannot afford EE.
>
> Hidden secret: if you can get your hands on the SQL Server SDK from SQL
> Server 6.5, there is a little utility in there for "log shipping." It
> continues to work under Windows 2000, and it will work just fine for
> Standard Edition. This gives you an ability to have a "warm" standby
> (manual effort to restart, but restart within 5 minutes). Log Shipping is
> built in to SQL Server 2000 EE... basically the same stuff but with much
> better U/I... but if you are on the cheap, this will do.
>
>> 2. We use Windows Load Balancing between the 2 webservers. They are
>> single
>> CPU with 1GB RAM. I am planning on adding 1GB more of RAM. Unfortunately
> I
>> do not have a budget for a 3rd box and a load balancer.
>
> Depending on how political your organization is, it is often better to ask
> for hardware and get the request shot down... that way when it turns out
> that your hardware is not sufficient, you can say "not my fault."
> Regardless, the cost of one more web server and a load balancer is not
> that
> high. (under 30K total). You could lose customers if the site isn't fast
> enough, right? What's the value of those customers? Anyway: you probably
> already know the arguments.
>
>> 4. I can get away with realtime modifications after 10, so I can keep it
>> simple for now.
>
> Then you can simply stage a change on your test machine and when it is
> time
> to go live, make the change in the middle of the night. No need for
> pluggable bits (good for you... time is of the essence).
>
>> 5. I know the cost of marshalling is high. I was coming from a "code
>> re-usability" / plug-n-play standpoint. If tomorrow I need to expose an
>> interface to an external partner I can simply write a web service layer
> over
>> the business logic/data layer to exchange data? OR if the growth is
>> tremendous then I can go get servers that will just run the middle tier?
>
> That depends on the amount of use that interface will get. If your design
> is scalable, you can put your app, with DLLs, on any web server without
> regard to other web servers. If so, then there will be no problem with
> putting the same DLLs on another machine with a different interface (web
> services as opposed to ASP.NET). If the interface is not being widely
> used,
> put it on BOTH web servers and balance it, just like a regular web site.
>
>> I come from the good old days of COM/COM+ where MS was pushing the whole
>> n-tier philosophy. Does the same apply to .net 1.1 and the upcoming 2.0?
>
> Still applies, but there will be much more work done in Longhorn to bring
> this to a much tighter reality. For now, you don't gain anything from that
> approach, so simply distribute your DLLs to each machine. You can still
> run
> them in Enterprise Services if you want to manage security more tightly,
> or
> if you want better transactional support for SQL.
>
>> 6. Talking about server 2003, we just recently upgraded a few of our apps
>> from 2000 to 2003 and have begun to see significant slow page load &
>> response times. Most of our sites run over SSL and we cant seem to find
> the
>> problem. Same hardware. Our network guys are working on it but havent
> struck
>> gold as yet. From reading various posts on these NGs it seems 2003 has
> some
>> inherent performance issues with IIS
>>
> Most common reason is running IIS 6 in IIS 5 Compatibility mode. Some of
> your apps will stop working when you switch this off, so be prepared for
> the
> possibility that you may need to rewrite some bits, but when you switch to
> full IIS 6, it should run much faster.
>
> Hope this helps,
> --- Nick
>
>

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