Jay Patel (architect at eBay):
Our Cassandra deployment is not huge, but it’s growing at a healthy pace. In the past couple of months, we’ve deployed dozens of nodes across several small clusters spanning multiple data centers. You may ask, why multiple clusters? We isolate clusters by functional area and criticality. Use cases with similar criticality from the same functional area share the same cluster, but reside in different keyspaces.
This first post is focused on two old techniques that have been applied even with relational databases:
- model data around query patterns
- de-normalize and duplicate for read performance.
Original title and link: eBay’s Cassandra Data Modeling Best Practices ( ©myNoSQL)