Hi,
I've been doing a lot of reading and I've one thing I'm not entirely
clear on - could someone clarify?
Q: Exactly at what point does indexing stop?
I'm trying to use cassandra to store log information that is both user
& time sensitive.
So I've a basic model like this:
detailed_log: { // supercolumnfamily (?)
username : { // supercolum (?)
uuid { price : 100, min : 10, max : 500 }, // columns
uuid { price : 100, min : 10, max : 500 },
uuid { price : 100, min : 10, max : 500 },
// ... expect 25,440 of these per username, per year
}
}
Defined as:
<ColumnFamily Name="pricelog" ColumnType="Super"
CompareWith="UTF8Type" CompareSubcolumnsWith="TimeUUIDType"/>
I've read
http://wiki.apache.org/cassandra/CassandraLimitations and
http://wiki.apache.org/cassandra/DataModelv2#ColumnFamily_containing_SuperColumns
... and lots else I could find on t'interweb but I'm still unclear if
this is the right way to go about it!?
My query model, in pseudosql is: (( where * is [price, min, max] etc ))
SELECT * FROM detailed_log WHERE username = 'foobar' AND uuid RANGE(
start_UUID -> end_UUID );
So, the question is, can I store my data like this, and retrieve it
efficiently, or do I need to combine my keys?
Hope I'm not being dense or asking an faq - I couldn't find a clear
answer anywhere.
Thanks!
Jim
