Reduce the cache ttl for public donations and total money collected. #572
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The idea of the cache is to help in extreme scenarios when many requests are being fired.
One request every 2 seconds should be easy to handle by the backend.
Motivation and context
Many people want to see their donation immediately after the payment.
With the 30 seconds cache - this was impossible and confusing.
Testing
Fired multiple requests and observed in the log that the actual db search is executed only once every 2 seconds for the public donations.