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Editorial Team
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Asked: 2026-05-14T03:46:16+00:00

I was working on a project a few months ago, and had the need

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I was working on a project a few months ago, and had the need to implement an award system. Similar to StackOverflow’s badge system. Badges

I might have not implemented it in the best possible way, and I am curious what your say in it would be.

What would a good way to track user activities, needed for badge awarding be?

Stackoverflow’s system needs to know of a lot of information, and I also get the impression that there would be a lot of data processing complicating things.

I would assume that SO calculates badges once or twice every 24, and that maybe logs are stored or a server dedicated to badge calculation.

Thoughts?

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1 Answer

  1. Editorial Team

    I don’t think is as complicated as you think. I highly doubt that SO calculates badges with some kind of user activity log (although technically the entire database is a user activity log). When I look at the lists of badges, I don’t see anything that can’t be implemented by running a SQL select query.

    Some of the queries could be pretty complicated, and there might be some sort of fancy caching mechanism, but I don’t see any reason why you would have to calculate badges in batches.

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