We’re using a high volume of read operations and getting consistently great performance. On our back-end servers that populate data, we’re using CAS operations and seeing strange peaks followed by degradation in write rate. Our throughput (number of CAS operations / sec) looks like this:
The fact that our throughput peaks and falls in a way that’s centralized seems like there’s something limiting us. We’re looking into datacenter / network issues, but if that were the case I’d expect us to see issues in read-only performance also. Is there something in the way CAS works that would cause performance to degrade periodically?