October 2018
Beginner to intermediate
348 pages
10h
English
Understanding how Cassandra handles writes is key to knowing how to build applications on top of it. The following is a high-level diagram of how the Cassandra write path works:

When a write operation reaches a node, it is persisted in two places. There is an in-memory structure known as a memtable, which gets the write. Additionally, the new data is written to the commit log, which is on-disk.