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Cassandra is mostly known for its I/O scalability, but its shared-nothing, highly available foundation is equally useful for applications requiring multi-datacenter distribution and constant uptime. It’s actually quite easy to build and manage HA services by punting the real HA problems to Cassandra’s battle-tested replication and sharding implementation. In this session, we’ll explore Pantheon’s edge routing layer, including:
Since this is a case study, we’ll also consider how Pantheon manages the DNS/Cassandra layer to maintain full availability (read and write) during deployments and data center interlink failures.
11th July 2011