<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">If there are updates, why not either insert a new value, or just do<br>a direct invalidation?</blockquote>
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<div>I'm thinking of situations where the regeration of a cache would be very db intensive.</div>
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<div>For instance, suppose I have voting for comments, and users can filter by votes (like digg/youtube/slashdot). I set a memcache list for every filter. However when there are changes to a particular comment's vote score, the list would be invalidated. Imagine if there is a lot of voting going on, it would mean the filter lists are constantly being reloaded by the database?
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