The only reasonable approach in this case - keep all data in memory (or shared memory at least), as there are 20-40 requests per second from users. And if each of these requests will make 10-30 requests to some db - even if this will work, i suppose it will not be very stable or scalable.

I think you'll be surprised. Databases are very good at this sort of think. Benchmark, don't guess ;-)

In reply to Re^3: Saving big blessed hashes to disk by adrianh
in thread Saving big blessed hashes to disk by b888

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