I suspect that referred mainly to caching and batching read queries, as opposed to writes, because with writes you'd lose ACID - some of the operations might fail. With reads, your cache may be outdated, but it won't break your data
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You mentioned Redis in the final section, but how come? Should I queue every write operation and feed it to the database in a constant speed?
I suspect that referred mainly to caching and batching read queries, as opposed to writes, because with writes you'd lose ACID - some of the operations might fail. With reads, your cache may be outdated, but it won't break your data