865a25101d
Summary: Marked the Ribbon filter and optimize_filters_for_memory features as production-ready, each enabling memory savings for Bloom-like filters. Use `NewRibbonFilterPolicy` in place of `NewBloomFilterPolicy` to use Ribbon filters instead of Bloom, or `ribbonfilter` in place of `bloomfilter` in configuration string. Some small refactoring in db_stress. Removed/refactored unused code in db_bench, in part preparing for future default possibly being different from "disabled." Pull Request resolved: https://github.com/facebook/rocksdb/pull/8408 Test Plan: Lots of prior automated, ad-hoc, and "real world" testing. Updated tests for new API names. Quick db_bench test: bloom fillrandom 77730 ops/sec rocksdb.block.cache.filter.bytes.insert COUNT : 89929384 ribbon fillrandom 71492 ops/sec rocksdb.block.cache.filter.bytes.insert COUNT : 64531384 Reviewed By: mrambacher Differential Revision: D29140805 Pulled By: pdillinger fbshipit-source-id: d742c922722421678f95ad85eeb0aaebc9f5e49a
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 especially 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/ and https://rocksdb.slack.com/
License
RocksDB is dual-licensed under both the GPLv2 (found in the COPYING file in the root directory) and Apache 2.0 License (found in the LICENSE.Apache file in the root directory). You may select, at your option, one of the above-listed licenses.