To use in memory storage as the storage type for Reaper, the storageType setting must be set to memory in the Reaper configuration YAML file. Note that the in memory storage is enabled by default. An example of how to configure Reaper with In-Menory storage can be found in the cassandra-reaper-memory.yaml.
storageType: memory
persistenceStoragePath: /var/lib/cassandra-reaper/storage
In-memory storage is volatile and as such all registered cluster, column families and repair information will be lost upon service restart. This storage setting is intended for testing purposes only.
Starting from 3.6.0, persistenceStoragePath is required for memory storage type. This enable lightweight deployments of Reaper, without requiring the use of a Cassandra database. It will store the data locally and reload them consistently upon startup.