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.

How good is RocksDB?

“RocksDb is one of the best NoSQL databases” I could perform a lot of optimisations in search operations due to that. It’s pretty fast in retrieval of data as well. Review collected by and hosted on G2.com.

Who is using RocksDB?

Who uses RocksDB? 11 companies reportedly use RocksDB in their tech stacks, including Facebook, LinkedIn, and Keevo.

Does Kafka use RocksDB?

Kafka Streams uses the RocksDB Java API.

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.

When should I use LevelDB?

Usage. LevelDB is used as the backend database for Google Chrome’s IndexedDB and is one of the supported backends for Riak. Additionally, Bitcoin Core and go-ethereum store the blockchain metadata using a LevelDB database. Minecraft Bedrock Edition uses a modified version for chunk and entity data storage.

Is RocksDB SQL or 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 a memory?

RocksDB Architecture The basic constructs of RocksDB are: memtable: an in-memory data-structure to ensure very low latency on reads. sorted static table files (SST files): where data is finally persisted.

How does RocksDB store data?

RocksDB is a storage engine library that implements a key-value interface where keys and values are arbitrary bytes. All data is organized in sorted order by the key. RocksDB offers these following operations: Get(key) , NewIterator() , Put(key, val) , Merge(key, val) , Delete(key) , and SingleDelete(key) .

Is RocksDB relational database?

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. Also, it has no direct support for secondary indexes, however a user may build their own internally using Column Families or externally.