Twitter currently runs a couple hundred Cassandra nodes across a half dozen clusters. These span a variety of workloads– from time series to data, to low latency, high throughput key/value. Each workload has led the team to new techniques for operating Cassandra at scale. Chris Goffinet, an engineer at Twitter and Cassandra committer, will be sharing some of the most interesting ones. For those of you interested in Cassandra and operations, this is a must-attend talk.
by Erik Onnen
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.
by Jake Luciani
11th July 2011