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brian.madsen-live - 4/5/2009 6:08:44 PM

User and subscriber limit?

Hi Guys,

A somewhat problematic issue seems to have risen it's head - maximum user and subscriber limits.

First off, are anybody aware of any set limits or does anybody have any idea on how many the Kentico CMS is capable of handling.

I imported all our subscribers (18,500+) at a rate of 1000 at a time (as was suggested by the import feature) and i now have them subscribed.

however, i now need to subscribe them to a particular newsletter so i can send out a notification - unfortunately it does not seem to handle this number very well.

attempts to subscribe the details to the newly created newsletter hangs the system.

I've tried three times now and it simply just doesn't seem to follow through with it and just sits there, doing nothing.

Secondly, this raises the possibility that the system isn't capable of sending out a newsletter to all our subscribers..again, does anybody have any benchmarks or experiences with numbers here?

It is absolutely vital that we are able to communicate with out subscribers as we have event notifications that needs to go out for three upcoming events with some high profile presenters (Greg Low, Brian Harry (MSFT) and Scott Guthrie (MSFT)).

The two latter names are of extreme importance that we can send out these notifications for as #1 Scott Guthrie has never visited a user group before and #2 Brian Harry is in himself a legend from Microsoft.

I tried to write a script to update the subscribernewsletter table, but i can't seem to insert data into it...so, the only option is to go through with the tools available.

Any help would be greatly appreciated.

Regards,
Brian H. Madsen
Microsoft MVP Visual Developer ASP.Net

Group Manager - Linked .Net Users Group (www.lidnug.org)

Kentico Support

kentico_jurajo - 4/7/2009 4:02:13 AM

RE:User and subscriber limit?

Hi Brian,

I have already sent you an e-mail, just for other users I will put it also here.

I have tested the subscription with 5k, 10k, 15k and 20k subscribers and it is working fine. The difference is that I am running it on my local PC and you on hosting - there might be some limitations set by the provider in the execution time out. Subscribing 20 000 subscribers to the newsletter took on my machine 5 minutes 18 seconds.

Therefore I would recommend you to assign the subscribers to certain newsletter already by the import, when you are importing 1000 subscribers at once.

We have tested the newsletter module and sending e-mails with 100 000 subscribers. Everything worked well. However, there are plenty of other settings that may cause and have caused problems - SMTP server settings, spam filters, firewalls, application pool settings.

Best Regards,
Juraj Ondrus

Member

brian.madsen-live - 4/7/2009 6:44:07 PM

RE:User and subscriber limit?

Hey Juraj,

yeah - it seems that the problem is the hosting provider rather than Kentico.

i got past it with a t-sql script instead...7 seconds and it was done :)

I just sent 18000+ emails successfully, however, again we had the blockade from the hosting provider in that the mail server is a shared server too.

seems that we're going to be much better off moving to a VSP solution instead - however, that costs $$$ and as a non-profit organisation and virtual user group we don't have the means for that...

the import was luckily a one-off import (for the time being that is) - regardless, my t-sql script is ready if i should need it again..

cheers and thanks Juraj - your help has, as always, been commendable and expedient!