It's kind of a holdover from when server RAM memory was constrained and
servers more multi-purposed/less specialized, remembering that EZproxy is
not terribly different in 2022 than it was in 2002. To be honest, I'd just
set it to a high value like 30000 and not worry much about it. At the Univ
of Minnesota we run 3 EZproxy servers with a huge number of stanzas
(11k-12k lines of config) and only once every couple of years does one
exceed the MaxVirtualHosts 20000 we set, requiring a trip to the
maintenance screen to clear them.

On Wed, Nov 30, 2022 at 8:16 AM Steven Marsden <[log in to unmask]>
wrote:

> I currently have the MaxVirtualHosts set to 30000, and I haven't
> encountered any sort of performance issues. My take would be to just for
> for it, set it to something that gives you a comfortable cushion above your
> current usage (if 4200 requires you to keep deleting unused hosts, try
> setting it to 7000 perhaps?). If for whatever reason it causes issues, it's
> very simple to set it back to 4200.
>
> -Steven
>
> On Mon, Nov 28, 2022 at 3:50 PM Hammer, Erich F <[log in to unmask]> wrote:
>
> > I'm relatively new to managing (self-hosted) EZProxy, and I have a
> > question that I'm hoping someone here can help answer...
> >
> > Every few days/weeks, I have to manually go into Host Maintenance and
> > remove hosts that have not been used in over 30 days.  That is a PITA for
> > something that otherwise is fairly pain-free.  The documentation explains
> > how to set the MaxVirtualHosts value and that Proxy by Port (depreciated)
> > has some limitations, but we have been using Proxy by HostName for a long
> > time.  What the documentation doesn't touch on is twofold...
> >
> > 1. How does increasing the MaxVirtualHosts number to something really
> > large effect performance?
> > 2. Is there some way to automate the removal of stale hosts?
> >
> > Our current MV is 4200.  What is appropriate for a sizeable ARL?
> >
> > The latter is the more frustrating one.  I'm not opposed to writing a
> > scheduled script to remove stale hosts to automate this, but I have yet
> to
> > find any documentation on how to do this from a command/terminal line.
> >
> > Thanks for any insight in advance.
> > Erich
> >
> >
> > --
> > Erich Hammer            Head of Library Systems
> > [log in to unmask]         University Libraries
> > 518-442-3891              University @ Albany
> >
> > Power corrupts; Absolute power corrupts absolutely;
> > God is all-powerful. Draw your own conclusions.
> >
>
>
> --
> Steven Marsden
> Library Systems Analyst, Toronto Metropolitan University Libraries
> Toronto Metropolitan University (Formerly Ryerson University)
> [log in to unmask]
> 416-979-5000 x 554636
>


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Michael Berkowski
Application Development Manager
University of Minnesota Libraries
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