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I am using Redis key-value pair for storing the data. The data against a particular key can change at any point of time, so after every retrieval request I asynchronously update the data stored against the requested key so that the next request can be served with updated data. I have done quite a bit of testing but still I am wondering if there could be any case where this approach might have some negative consequences?

PS: The data is consolidated from multiple servers.

Thanks in advance for any help/suggestions.

viks1010
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1 Answers1

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If you already know the value to be stored, you can use GETSET (or a transaction if it is not a simple string type). If the new value is some manipulation on the value i.e. f(value), you should do it in a LUA script.

Otherwise some other client might read the old value before you update it.

Ofir Luzon
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