Break the data matrix. Explore what Redis has to offer.
When I say that Redis is a database, I’m only telling a partial truth. Redis is a very fast non-relational database that stores a mapping of keys to five different types of values. Redis supports in-memory persistent storage on disk, replication to scale read performance, and client-side sharding1 to scale write performance. That was a mouthful, but I’ll break it down by parts.
1 Sharding is a method by which you partition your data into different pieces. In this case, you partition your data based on IDs embedded in the keys, based on the hash of keys, or some combination of the two. Through partitioning your data, you can store and fetch the data from multiple machines, which can allow a linear scaling in performance for certain problem domains.
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