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Instagram: Making the Switch to Cassandra from Redis, a 75% 'Insta' Savings
shifting data out of RAM and onto SSDs -- unsurprisingly, big savings.
a 12 node cluster of EC2 hi1.4xlarge instances; we store around 1.2TB of data across this cluster. At peak, we're doing around 20,000 writes per second to that specific cluster and around 15,000 reads per second. We've been really impressed with how well Cassandra has been able to drop into that role.
ram  ssd  cassandra  databases  nosql  redis  instagram  storage  ec2 
june 2013 by jm
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