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Datomic is Free

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Re: Datomic is Free

#362

Earlier quoted context omitted.

Strong agree. there are vast, massive cost savings and performance advantages to be had if the model is that a shard of the dataset is in memory and the data persistence problem is the part that's made external. The only reason we are where we are today is that doing that well is hard.

Is this not the case already? Database drivers (or just your application code) are allowed to cache results if they like. The problem is cache invalidation.

Caches aren't the same. In the shard-in-memory case, the shard is the thing serving the queries, meaning it's not a cache it _is_ the live data.
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