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Editorial Team
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Asked: 2026-06-04T08:04:33+00:00

I am building a rails app, have a site wide counter variable (counter) that

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I am building a rails app, have a site wide counter variable (counter) that is used (read and write) by different pages, basically many pages can cause the counter increment, what is a multi-thread-safe way to store this variable so that
1) it is thread-safe, I may have many concurrent user access might read and write this variable
2) high performing, I originally thought about persist this variable in DB, but wondering is there a better way given there can be high volume of request and I don’t want to make this DB query the bottleneck of my app…

suggestions?

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  1. Editorial Team

    It depends whether it has to be perfectly accurate. Assuming not, you can store it in memcached and sync to the database occasionally. If memcached crashes, it expires (shouldn’t happen if configured properly), you have to shutdown, etc., reload it from the database on startup.

    You could also look at membase. I haven’t tried it, but to simplify, it’s a distributed memcached server that automatically persists to disk.

    For better performance and accuracy, you could look at a sharded approach.

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