Hi Ryan.
you wouldn't have your version of cassandra up on github would you??

Colin.. always a pleasure.

On Jun 9, 2011, at 3:44 PM, Ryan King wrote:

> On Thu, Jun 9, 2011 at 12:41 PM, Ian Holsman <had...@holsman.net> wrote:
>> Hi.
>> 
>> I had a brief look at CASSANDRA-2103 (expiring counter columns), and I was 
>> wondering if anyone can help me with my problem.
>> 
>> I want to keep some page-view stats on a URL at different levels of 
>> granularity (page views per hour, page views per day, page views per year 
>> etc etc).
>> 
>> 
>> so my thinking was to create something a counter with a key based on 
>> Year-Month-Day-Hour, and simply increment the counter as I go along.
>> 
>> this work's well and I'm getting my metrics beautifully put into the right 
>> places.
>> 
>> the only problem I have is that I only need the last 48-hours worth of 
>> metrics at the hour level.
>> 
>> how do I get rid of the old counters?
>> do I need to write a archiver that will go through each url (could be 
>> millions) and just delete them?
>> 
>> I'm sure other people have encountered this, and was wondering how they 
>> approached it.
> 
> Here's how we are going to do it at twitter:
> https://issues.apache.org/jira/browse/CASSANDRA-2735
> 
> -ryan

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