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I'm also interested to know how quickly the blockchain data gets added to the db as I have some apps in the pipeline that need a refresh quicker than SteemDB's 10 minute.

refreshing this in the browser: https://steemdata.com/stats seems to add up blocks every 5-10 seconds which is freaking awesome!

I think, there is queue for block addition it looks (15 blocks behind or so). If @furion can clarify exact numbers or way it is being populated, it would be helpful.

Operations and new Posts are near real time, new accounts will be too in the future. Everything else is delayed. Once work sharding is in place, it should be pretty fast.

Blocks don't always have data/transactions so this is why it isn't a constant x blocks added each x seconds i think, but yea, let's wait for @furion