[GeneralDiscussion] server outage, caching changes

My server has been increasingly melting down due to heavy ill-behaved  
bot traffic and trying to do too much in 1G of ram with not enough  
sysadmin-fu; I had to walk away from it this weekend. Sorry for the  
recent slowness and outages. I have been trying all kinds of  
adjustments, as well as looking into reducing the free hosted zwikis,  
moving zope to a cheaper vps and so on.

This week I have enabled apache's mod_disk_cache for all of joyful.com  
& zwiki.org. Now those slow zope requests are being cached in /var/ 
cache/apache2/mod_disk_cache, and server load is way down. But you may  
not see very fresh results, I think depending on your browser. Eg the  
last edited time at top right of wiki pages may be way wrong. I  
suspect it should update itself after an hour, but maybe not. If in  
doubt, try a shift-reload. Still working on this.

Best - Simon

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