AWS Database Blog
Author: Joe Ellis
How Monzo Bank reduced cost of TTL from time series index tables in Amazon Keyspaces
At Monzo, we use Amazon Keyspaces (for Apache Cassandra) as our main operational database. Today, we store over 350 TB of data across more than 2,000 tables in Amazon Keyspaces, handling over 2,000,000 reads and 100,000 writes per second at peak. In this post, we share how we used a different mechanism for row expiry than the Time to Live setting in Amazon Keyspaces to reduce our operating costs for an index while preserving its semantics.