Why is LevelDB so fast?
LevelDB writes keys and values at least twice. A single batch of N writes may be significantly faster than N individual writes. LevelDB’s performance improves greatly with more memory, a larger write buffer reduces the need to merge sorted files (since it creates a smaller number of larger sorted files).
Why is RocksDB so fast?
RocksDB builds on LevelDB to be scalable to run on servers with many CPU cores, to efficiently use fast storage, to support IO-bound, in-memory and write-once workloads, and to be flexible to allow for innovation.
Does Kafka use RocksDB?
Kafka Streams uses the RocksDB Java API.
Is RocksDB a NoSQL?
RocksDB is not an SQL database (although MyRocks combines RocksDB with MySQL). Like other NoSQL and dbm stores, it has no relational data model, and it does not support SQL queries.
Is RocksDB fast?
RocksDB is optimized for fast, low latency storage such as flash drives and high-speed disk drives. RocksDB exploits the full potential of high read/write rates offered by flash or RAM.
How good is RocksDB?
How good is RocksDB as a database storage engine? Our engineering team at Facebook firmly believes that RocksDB has great potential as storage engine for databases. It has been proven in production with MongoDB: MongoRocks is the RocksDB based storage engine for MongoDB.
Does Cassandra use RocksDB?
Instagram Supercharges Cassandra with a Pluggable RocksDB Storage Engine. To boost the performance of a mission-critical instance of Cassandra, Instagram engineers replaced the storage engine of this Java-based distributed open source database with a faster C++-based one from another database, RocksDB.
Does Facebook use RocksDB?
RocksDB is used extensively for storing persistent data on SSD at Facebook, and is also used by various services that serve online queries on hard drives.
Is RocksDB SQL or NoSQL?