Currently RocksDB supports two types of tables: plain table and block-based table. Instances of this classes can assigned to :pyrocksdb.Options.table_factory
- Block-based table: This is the default table type that RocksDB inherited from LevelDB. It was designed for storing data in hard disk or flash device.
- Plain table: It is one of RocksDB's SST file format optimized for low query latency on pure-memory or really low-latency media.
Tutorial of rocksdb table formats is available here: https://github.com/facebook/rocksdb/wiki/A-Tutorial-of-RocksDB-SST-formats
RocksDB has different classes to represent the in-memory buffer for the current operations. You have to assing instances of the following classes to :pyrocksdb.Options.memtable_factory. This page has a comparison the most popular ones. https://github.com/facebook/rocksdb/wiki/Hash-based-memtable-implementations