It's an average of 8GB per database, I guess he serves multiple clients and decided to "segregate" each client on its instance. If it's acceptable for the business it's nothing wrong with his setup.

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_el1s7 5 hours ago | parent [-]

> Several live mobile apps serving hundreds of thousands of users

It seems like he's having a database for each app.

	▲	vb-8448 4 hours ago \| parent [-]
		Could be, but this doesn't change my statement: if it's acceptable from the business standpoint there is nothing wrong with this setup.