Re: UsageLimit - tips?

Hi Ranti, Laszlo,

We used to have more of a problem before moving to two factor authentication.

We put our resources under one of the following limits.  When we got a complaint (in the old days) from a vendor, we'd tighten the limits (or create a new one). When we saw on the audit events admin page that a lot of people were hitting the limits, we'd loosen them.  I think we started with just two, and ran them unenforced for a while to get an idea where they should be.  I suppose if you really want to be scientific about it, you could mine your logs, to see how may hits and mb per session/vender/hour you get for each vendor, to see what vendors seem to require the same kind of limts.

UsageLimit -enforce -expires=20 -interval=30 -transfers=1100 -MB=900 Stingy
  {bunch of stanzas}
UsageLimit -end Stingy
UsageLimit -enforce -interval=30 -expires=20  -transfers=2000 Average
  {bunch of stanzas}
UsageLimit -end Average
UsageLimit -enforce -expires=20 -interval=30 -transfers=4500 Generous
  {bunch of stanzas}
UsageLimit -end Generous
UsageLimit -enforce -expires=20 -interval=30 -transfers=10000 Magnanimous
  {bunch of stanzas}
UsageLimit -end Magnanimous

But you do have to monitor the events. Not only is there variability between vendors,  over time what constitutes acceptable usage can vary for a single vendor as they add more journals, or larger files (pictures, video)

- Mike

Mike Barrett
Systems Administrator
Health Sciences Library
Pronouns: he, him, his

NYU Langone Health
577 1st Avenue
New York, NY 10016

T 212-263-6691
[email protected]


From: EZproxy List <[email protected]> On Behalf Of Laszlo Gercsov
Sent: Thursday, October 31, 2019 7:08 PM
To: [email protected]
Subject: Re: [EZPROXY-L] UsageLimit - tips?

Hi Ranti.

I have not been able to find a suitable method to limit access by number or volume of downloads. This is due to the highly variable nature of vendor web sites. Usage which would be excessive on one site us normal for another site.

Good luck ! And let us know if you find a solution !

Best,

Laszlo.

Laszlo Gercsov

Senior Systems Analyst Library Systems

Library  |  Level 4
16 Macquarie Drive
Macquarie University, NSW 2109, Australia

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________________________________
From: EZproxy List <[email protected]<mailto:[email protected]>> on behalf of Ranti Junus <[email protected]<mailto:[email protected]>>
Sent: Friday, 1 November 2019 4:03 AM
To: [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>>
Subject: [EZPROXY-L] UsageLimit - tips?

Hello,

We're looking at reasonable way to utilize UsageLimit. I understand we need
to monitor usage before setting the limit. I'm wondering where do you get
the sweet number: based on the highest? Average number?

Do you put it as global usage limit or do you enforce it selectively?

If you have any documentation or conference/workshop presentation that
you're willing to share, please feel free.

Thank you.


ranti.

--
Ranti Junus
Systems/Electronic Resources Librarian
Library Science selector and Museum Studies liaison
Michigan State University Libraries
366 West Circle Dr., East Lansing, MI 48824, USA
+1.517.884.0878 | @ranti

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