for example, if I have an application that needs to read off a user browsing history, and I model the user ID as the key, and the history data within the row. with current approach, I could model each visit as a column, the possible issue is that *possibly* (I'm still doing a lot of profiling on this to verify) that a lot of time is spent on serialization into the message and out of the message, plus I do not need the full features provided by the column : for example I do not need a timestamp on each visit, etc, so it might be faster to put the entire history in a blob, and each visit only takes up a few bytes in the blob, and my code manipulates the blob.
problem is, I still need to avoid the read-before-write, so I send only the latest visit, and let cassandra do the reconcile, which appends the visit to the blob, so this needs custom reconcile behavior. is there a way to incorporate such custom reconcile under current code framework? (I see custom sorting, but no custom reconcile) thanks yang
