Well, I'd say that for double-post and spam control, it's not a big problem if sometime it doesn't work. I mean, with this kind of algorithm he already accept one spamming message, so two is not a problem.
2009/7/28 Josef Finsel <carpd...@gmail.com>: > Another question you might want to ask is how are you going to handle it if > the item has been evicted from the cache? Someone could be spamming you and > you wouldn't catch it. > Granted, that would have to be a cache with a high-eviction rate but it's > still a possibility you might want to consider. > > On Tue, Jul 28, 2009 at 12:04 PM, Beyza <anlamar...@gmail.com> wrote: >> >> Hi, >> >> This is not an important question, but I wonder the answer. >> >> When I develop websites by using memcache, I also use it for spam >> checking. >> >> For example; When someone post a comment, or report something, or >> search something, I create a memcache object and set an expiration >> time, i.e. 5 seconds. It goes something like that >> >> memcache_set($memcache, "comment-check-userid", '1', 0, 5); >> >> I check every time whether this value is set or not. If it's set, I >> consider it as a spam. >> >> My question is that, is it expensive to create this if you compare >> with other options for this purpose? I could not find any information >> about this on the internet. I am just curious :) >> >> Thanks from now on, > > > > -- > "If you see a whole thing - it seems that it's always beautiful. Planets, > lives... But up close a world's all dirt and rocks. And day to day, life's a > hard job, you get tired, you lose the pattern." > Ursula K. Le Guin > > What's different about data in the cloud? http://www.azuredba.com > > http://www.finsel.com/words,-words,-words.aspx (My blog) - > http://www.finsel.com/photo-gallery.aspx (My Photogallery) > -http://www.reluctantdba.com/dbas-and-programmers/blog.aspx (My > Professional Blog) >
