[Animats]

Ad.

Some years ago, Microsoft was working on that. The idea was that you'd submit a query, and when the results of it changed, you'd get a notification. The goal was to have a large system where millions of such outstanding queries could be pending.

What this really means is a database of queries, which is queried when there's a data update to see who needs to be informed.

Anyone know how that Microsoft project came out?

[tlogan]

The streaming queries and flash back queries techology is at least 10 years old: https://docs.oracle.com/en/database/oracle/oracle-database/1...

As far as I remember oracle 10 introduced that. In Oracle 11 it actually started working good.

[clusterhacks]

Aurora was developed in 2002 so pushing 20 years (publications at http://cs.brown.edu/research/aurora/).

[sam_lowry_]

I used Lucene percolator queries 8 years ago, and it probably wasn't that new at that time.