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I answered a question that showed up on the main screen. I went back to the main screen. It said "0 Answers". I refreshed. It said "0 Answers". I clicked the question again, refreshed, went back to the main screen again, refreshed, and it said "0 answers". I waited 20 seconds, refreshed, and it said "1 answer".

I've never noticed this behavior before, and since I know some changes were made recently, I wanted to note it in case it's helpful to anyone on the SO team.

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Note: I also noticed this question took about 30 seconds to show up on the feed of the main meta.stackoverflow.com screen. It seems entirely plausible that the delay is intentionally there to manage the volume of HTTP requests by refreshing UI content globally in intervals. –  smartcaveman Sep 17 '12 at 1:09
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Caching. The answer is always caching. –  Michael Petrotta Sep 17 '12 at 1:16
    
@MichaelPetrotta, That's what I figured. The delay just seems more obvious than usual so I wanted to bring it to attention. –  smartcaveman Sep 17 '12 at 1:17
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If you're talking about answer counts shown on the home page, we cache that list for 5 minutes, so all questions and their counts are static for the cache duration. –  Jarrod Dixon Sep 17 '12 at 1:39
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