A library that provides an embeddable, persistent key-value store for fast storage.
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Dmitri Smirnov cdad04b051 Remove double buffering on RandomRead on Windows.
Summary:
Remove double buffering on RandomRead on Windows.
  With more logic appear in file reader/write Read no longer
  obeys forwarding calls to Windows implementation.
  Previously direct_io (unbuffered) was only available on Windows
  but now is supported as generic.
  We remove intermediate buffering on Windows.
  Remove random_access_max_buffer_size option which was windows specific.
  Non-zero values for that opton introduced unnecessary lock contention.
  Remove Env::EnableReadAhead(), Env::ShouldForwardRawRequest() that are
  no longer necessary.
  Add aligned buffer reads for cases when requested reads exceed read ahead size.
Closes https://github.com/facebook/rocksdb/pull/2105

Differential Revision: D4847770

Pulled By: siying

fbshipit-source-id: 8ab48f8e854ab498a4fd398a6934859792a2788f
2017-04-27 12:30:05 -07:00
arcanist_util Fix arc setting for Facebook internal tools 2017-02-02 13:24:16 -08:00
buckifier internal_repo_rocksdb to build Java and RocksDB LITE 2017-04-12 15:13:41 -07:00
build_tools AIX and Solaris Sparc Support 2017-04-21 20:48:04 -07:00
cache Add erase option to release cache 2017-04-24 11:28:36 -07:00
cmake/modules CMake: more MinGW fixes 2017-04-06 14:09:13 -07:00
coverage Fix coverage script 2014-11-03 14:53:00 -08:00
db Remove double buffering on RandomRead on Windows. 2017-04-27 12:30:05 -07:00
docs Blog post for releasing 5.2.1 2017-03-22 17:54:18 -07:00
env add prefetch to PosixRandomAccessFile in buffered io 2017-04-26 14:47:23 -07:00
examples CMake: more MinGW fixes 2017-04-06 14:09:13 -07:00
hdfs Fix bug in UnScSigned-off-by: xh931076284 <931076284@qq.com> (#1336) 2016-09-14 10:17:34 -07:00
include/rocksdb Remove double buffering on RandomRead on Windows. 2017-04-27 12:30:05 -07:00
java AIX and Solaris Sparc Support 2017-04-21 20:48:04 -07:00
memtable AIX and Solaris Sparc Support 2017-04-21 20:48:04 -07:00
monitoring Add user stats Reset API 2017-04-26 15:57:01 -07:00
options Remove double buffering on RandomRead on Windows. 2017-04-27 12:30:05 -07:00
port Remove double buffering on RandomRead on Windows. 2017-04-27 12:30:05 -07:00
table AIX and Solaris Sparc Support 2017-04-21 20:48:04 -07:00
third-party Fix build with MinGW 2017-03-30 16:54:52 -07:00
tools AIX and Solaris Sparc Support 2017-04-21 20:48:04 -07:00
util Remove double buffering on RandomRead on Windows. 2017-04-27 12:30:05 -07:00
utilities Remove double buffering on RandomRead on Windows. 2017-04-27 12:30:05 -07:00
.clang-format A script that automatically reformat affected lines 2014-01-14 12:21:24 -08:00
.deprecated_arcconfig Update ShipIt to honor TARGETS updates 2017-04-13 16:12:03 -07:00
.gitignore Add buckifier script to github repo 2017-04-04 16:24:26 -07:00
.travis.yml Add Travis job to build examples 2017-04-07 10:39:15 -07:00
appveyor.yml Rework test running script. 2017-04-05 11:39:20 -07:00
AUTHORS Add AUTHORS file. Fix #203 2014-09-29 10:52:18 -07:00
CMakeLists.txt Extract statistics tests into separate file 2017-04-26 14:47:23 -07:00
CONTRIBUTING.md facebook accounts are not required for CLA signers 2014-07-08 05:57:54 -04:00
DEFAULT_OPTIONS_HISTORY.md Change the default of delayed slowdown value to 16MB/s 2017-02-01 20:39:17 -08:00
DUMP_FORMAT.md First version of rocksdb_dump and rocksdb_undump. 2015-06-19 16:24:36 -07:00
HISTORY.md Remove double buffering on RandomRead on Windows. 2017-04-27 12:30:05 -07:00
INSTALL.md AIX and Solaris Sparc Support 2017-04-21 20:48:04 -07:00
LANGUAGE-BINDINGS.md Adding Dlang to the list 2017-02-16 17:24:10 -08:00
LICENSE Updated all copyright headers to the new format. 2016-02-09 15:12:00 -08:00
Makefile Extract statistics tests into separate file 2017-04-26 14:47:23 -07:00
PATENTS Update Patent Grant. 2015-04-13 10:33:43 +01:00
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 Extract statistics tests into separate file 2017-04-26 14:47:23 -07:00
TARGETS Extract statistics tests into separate file 2017-04-26 14:47:23 -07:00
thirdparty.inc Introduce XPRESS compresssion on Windows. (#1081) 2016-04-19 22:54:24 -07:00
USERS.md Update USERS.md add user Pika 2017-01-25 10:39:17 -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

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/