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A library that provides an embeddable, persistent key-value store for fast storage.
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Dmitri Smirnov b010116d82 Eliminate some redundant block reads. 
Summary:
Re-use metadata for reading Compression Dictionary on BlockBased
  table open, this saves two reads from disk.
  This helps to our 999 percentile in 5.6.1 where prefetch buffer is  not present.
Closes https://github.com/facebook/rocksdb/pull/3354

Differential Revision: D6695753

Pulled By: ajkr

fbshipit-source-id: bb8acd9e9e66e65b89c548ab8940570ae360333c
2018-01-10 17:11:58 -08:00
buckifier Remove import use from TARGETS 2017-11-30 15:27:34 -08:00
build_tools Remove GCC parameter "-march=native" for ARM 2018-01-09 18:27:03 -08:00
cache fix gflags namespace 2017-12-01 10:42:05 -08:00
cmake add missing config checks to CMakeLists.txt 2017-11-30 22:57:00 -08:00
coverage Fix /bin/bash shebangs 2017-08-03 15:56:46 -07:00
db Fix directory name for db_basic_test 2018-01-10 15:41:46 -08:00
docs Blog post for WritePrepared Txn 2017-12-20 11:42:15 -08:00
env Suppress valgrind "unimplemented functionality" error 2017-11-15 14:28:34 -08:00
examples Pinnableslice examples and blog post 2017-08-24 12:26:07 -07:00
hdfs Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
include/rocksdb Add a BlockBasedTableOption to turn off index block compression. 2018-01-10 15:11:59 -08:00
java Fix Travis build failures in CMake RocksJava 2018-01-09 16:42:15 -08:00
memtable fix gflags namespace 2017-12-01 10:42:05 -08:00
monitoring fix ThreadStatus for bottom-pri compaction threads 2017-12-14 14:57:49 -08:00
options Add a BlockBasedTableOption to turn off index block compression. 2018-01-10 15:11:59 -08:00
port Speed up BlockTest.BlockReadAmpBitmap 2018-01-02 10:41:28 -08:00
table Eliminate some redundant block reads. 2018-01-10 17:11:58 -08:00
third-party Enable MSVC W4 with a few exceptions. Fix warnings and bugs 2017-10-19 10:57:12 -07:00
tools Add a BlockBasedTableOption to turn off index block compression. 2018-01-10 15:11:59 -08:00
util FIXED: string buffers potentially too small to fit formatted write 2017-12-20 08:12:22 -08:00
utilities Fix checkpoint_test directory setup/cleanup 2018-01-10 12:26:49 -08:00
.clang-format A script that automatically reformat affected lines 2014-01-14 12:21:24 -08:00
.gitignore Remove leftover references to phutil_module_cache 2017-08-23 12:12:21 -07:00
.travis.yml CMake cross platform Java support and add JNI to travis 2017-11-28 12:27:53 -08:00
appveyor.yml Make Windows dep switches compatible with other builds 2018-01-05 14:56:54 -08:00
AUTHORS Update RocksDB Authors File 2017-10-18 14:42:10 -07:00
CMakeLists.txt Make Windows dep switches compatible with other builds 2018-01-05 14:56:54 -08:00
CODE_OF_CONDUCT.md Add Code of Conduct 2017-12-05 18:42:35 -08:00
CONTRIBUTING.md Add Code of Conduct 2017-12-05 18:42:35 -08:00
COPYING Add GPLv2 as an alternative license. 2017-04-27 18:06:12 -07:00
DEFAULT_OPTIONS_HISTORY.md options.delayed_write_rate use the rate of rate_limiter by default. 2017-05-24 09:58:24 -07:00
DUMP_FORMAT.md First version of rocksdb_dump and rocksdb_undump. 2015-06-19 16:24:36 -07:00
HISTORY.md Port 3 way SSE4.2 crc32c implementation from Folly 2017-12-19 18:26:49 -08:00
INSTALL.md Default one to rocksdb:x64-windows 2017-09-28 16:12:24 -07:00
issue_template.md Add a template for issues 2017-09-29 11:41:28 -07:00
LANGUAGE-BINDINGS.md Add Elixir to the list of language bindings 2017-11-21 10:13:14 -08:00
LICENSE.Apache Change RocksDB License 2017-07-15 16:11:23 -07:00
LICENSE.leveldb Add back the LevelDB license file 2017-07-16 18:42:18 -07:00
Makefile Fix zstd/zdict include path for java static build 2018-01-05 15:41:46 -08:00
README.md Appveyor badge to show master branch 2016-07-26 13:54:08 -07:00
ROCKSDB_LITE.md Optimistic Transactions 2015-05-29 14:36:35 -07:00
src.mk Refactor ReadBlockContents() 2017-12-11 15:27:32 -08:00
TARGETS WritePrepared Txn: make buck tests parallel 2017-12-18 14:42:09 -08:00
thirdparty.inc Make Windows dep switches compatible with other builds 2018-01-05 14:56:54 -08:00
USERS.md Added ProfaneDB 2017-11-19 10:11:44 -08:00
Vagrantfile Update Vagrant file (test internal phabricator workflow) 2016-10-28 15:39:19 -07:00
WINDOWS_PORT.md Commit both PR and internal code review changes 2015-07-07 16:58:20 -07:00

README.md

RocksDB: A Persistent Key-Value Store for Flash and RAM Storage

Build Status Build status

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/