I don't think that KDB does, either? MY understanding of this in KDB, and I could be wrong (I'm not an expert) is that in KDB you can write to the tickerplant

I don't think that KDB does, either? MY understanding of this in KDB, and I could be wrong (I'm not an expert) is that in KDB you can write to the tickerplant database. Those clients subscribing to the realtime will see this in realtime, and then eventually it will get asynchronously written to another DB which allows querying. I guess you'd think of it as eventual consistency. (Please correct me if I'm incorrect/misunderstood the above)