[geowebcache-users] Tile Expiration

[David G. S. PE P. <ds...@sy...>]

Hi,

 

I'm a new GeoWebCache user, and I'm looking to find out how to configure and
tweak performance.

 

The dataset I have is relatively static - I anticipate the tiles could
easily remain in the cache for months at a stretch between refreshes.

 

The first question is, how do I (or can I) set how long GeoWebCache will
maintain its serverside set of tiles?  I'm curious about tips on how to
tweak my configuration to best optimize the amount of storage required
versus perception of performance.

 

Second question is, how do I control caching behavior on clients requesting
my tiles?  I notice they come in from GWC set to "Expires Thu 01 Jan 1970
00:00:00" - already expired, and presumably forcing a new request every
time?  When I do set caching in GeoServer, that gets reflected in a
"max-age=nnnnnn" with nnnnnn set to how many seconds I plugged in, but it
still has 01 Jan 1970 for its expiration date.   Is there any way I can set
that expiration date to today or otherwise control it?   In comparison, I
see Virtual Earth to have max-age=31536000 and expires set to Thu 02 Jul
2008 14:15 GMT (today).

 

Thanks,


Dave Smith

 





 <http://www.synergist-tech.com/> Synergist Technology Group, Inc.

A Service Disabled Veteran Owned Small Business

 



David G. Smith PE PLS
VP/Director of Geospatial Information Technology 

Synergist Technology Group, Inc.
 
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