af0c9ac01d
Summary: This enables configurable Envs without recompiling. For example, my next diff will make env_test test an Env created by NewEnvFromUri(). Then, users can determine which Env is tested simply by providing the URI for NewEnvFromUri() (e.g., through a CLI argument or environment variable). The registration process allows us to register any Env that is linked with the RocksDB library, so we can register our internal Envs as well. The registration code is inspired by our internal InitRegistry. Test Plan: new unit test Reviewers: IslamAbdelRahman, lightmark, ldemailly, sdong Reviewed By: sdong Subscribers: leveldb, dhruba, andrewkr Differential Revision: https://reviews.facebook.net/D58449
RocksDB: A Persistent Key-Value Store for Flash and RAM Storage
RocksDB is developed and maintained by Facebook Database Engineering Team. It is built on earlier work on LevelDB by Sanjay Ghemawat (sanjay@google.com) and Jeff Dean (jeff@google.com)
This code is a library that forms the core building block for a fast key value server, especially suited for storing data on flash drives. It has a Log-Structured-Merge-Database (LSM) design with flexible tradeoffs between Write-Amplification-Factor (WAF), Read-Amplification-Factor (RAF) and Space-Amplification-Factor (SAF). It has multi-threaded compactions, making it specially suitable for storing multiple terabytes of data in a single database.
Start with example usage here: https://github.com/facebook/rocksdb/tree/master/examples
See the github wiki for more explanation.
The public interface is in include/. Callers should not include or
rely on the details of any other header files in this package. Those
internal APIs may be changed without warning.
Design discussions are conducted in https://www.facebook.com/groups/rocksdb.dev/