You cannot set the the TTL without also setting the column value. Could you keep a record of future deletes in a CF and then action them as a batch process ?
Cheers ----------------- Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 5/04/2012, at 2:00 PM, 金剑 wrote: > Hi, > > We would like to leverage Cassandra's expiration to manage our data's > lifecycle. We need to: Delete data after a period, like: 1 hour , when user > clicked the "Delete" button. > > We need to read and insert the column in order to update the TTL, but this is > unacceptable in our system that might need to readout gigabytes of data. > > Is there a way to do this? > > Best Regards! > > Jian Jin >