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A library that provides an embeddable, persistent key-value store for fast storage.
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Hui Xiao 6c3bf83d6f Update HISTORY.md for #8428 (#9001) 
Summary:
Context:
HISTORY.md was not properly updated along with the change in https://github.com/facebook/rocksdb/pull/8428, where we introduced a change of accounting compression dictionary buffering memory and an extra condition of triggering data unbuffering.
Updated HISTORY.md for https://github.com/facebook/rocksdb/pull/8428 in 6.25.0 HISTORY.md section.
Updated blog post https://rocksdb.org/blog/2021/05/31/dictionary-compression.html.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9001

Reviewed By: ajkr

Differential Revision: D31517836

Pulled By: hx235

fbshipit-source-id: 01f6b30de4e1ff6b315aa8221139d9b700c7c629
2021-10-08 17:00:30 -07:00
.circleci Fix and detect headers with missing dependencies (#8893) 2021-09-10 10:00:26 -07:00
.github/workflows Add (& fix) some simple source code checks (#8821) 2021-09-07 21:19:27 -07:00
buckifier Modify script which generates TARGETS (#8366) 2021-06-04 16:28:59 -07:00
build_tools Fix wrong tmp dir name in fbcode stress test lego command (#9000) 2021-10-08 13:39:41 -07:00
cache Introduce a mechanism to dump out blocks from block cache and re-insert to secondary cache (#8912) 2021-10-07 11:42:31 -07:00
cmake Add find_dependency() in cmake config file. (#6791) 2020-05-12 21:18:29 -07:00
coverage Remove asan_symbolize.py for internal asan build (#8737) 2021-09-07 15:39:11 -07:00
db Ingest external SST files with Temperature hints (#8949) 2021-10-08 10:32:24 -07:00
db_stress_tool Enable SingleDelete with user defined ts in db_bench and crash tests (#8971) 2021-10-01 16:48:01 -07:00
docs Misc doc fixes (#8983) 2021-10-07 11:22:17 -07:00
env Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
examples Add (& fix) some simple source code checks (#8821) 2021-09-07 21:19:27 -07:00
file Add file temperature related counter and bytes stats to and io_stats (#8710) 2021-10-07 14:58:41 -07:00
fuzz Make EventListener into a Customizable Class (#8473) 2021-07-27 07:47:02 -07:00
hdfs fix build with 'USE_HDFS' on windows (#6950) 2020-06-12 16:21:50 -07:00
include/rocksdb Ingest external SST files with Temperature hints (#8949) 2021-10-08 10:32:24 -07:00
java Add remote compaction read/write bytes statistics (#8939) 2021-09-28 14:00:37 -07:00
logging Make SystemClock into a Customizable Class (#8636) 2021-09-21 09:23:48 -07:00
memory Fix and detect headers with missing dependencies (#8893) 2021-09-10 10:00:26 -07:00
memtable Make MemTableRepFactory into a Customizable class (#8419) 2021-09-08 07:46:44 -07:00
microbench Add micro-benchmark support (#8493) 2021-07-08 18:22:45 -07:00
monitoring Add file temperature related counter and bytes stats to and io_stats (#8710) 2021-10-07 14:58:41 -07:00
options Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
plugin Makefile support to statically link external plugin code (#7918) 2021-02-10 08:35:34 -08:00
port Prevent deadlock in db_stress with DbStressCompactionFilter (#8956) 2021-09-24 16:54:02 -07:00
table stop populating unused/invalid MergingIterator heaps (#8975) 2021-10-07 15:26:08 -07:00
test_util Cleanup multiple implementations of VectorIterator (#8901) 2021-10-06 07:48:31 -07:00
third-party Fix a compilation error in CircleCI vs2019 CXX20 (#8090) 2021-03-23 10:28:04 -07:00
tools Enable SingleDelete with user defined ts in db_bench and crash tests (#8971) 2021-10-01 16:48:01 -07:00
trace_replay Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
util Cleanup multiple implementations of VectorIterator (#8901) 2021-10-06 07:48:31 -07:00
utilities Introduce a mechanism to dump out blocks from block cache and re-insert to secondary cache (#8912) 2021-10-07 11:42:31 -07:00
.clang-format A script that automatically reformat affected lines 2014-01-14 12:21:24 -08:00
.gitignore gitignore cmake-build-* for CLion integration (#7933) 2021-02-19 13:43:15 -08:00
.lgtm.yml Create lgtm.yml for LGTM.com C/C++ analysis (#4058) 2018-06-26 12:43:04 -07:00
.travis.yml Move arm build from travis to circleci (#8203) 2021-04-19 20:07:02 -07:00
.watchmanconfig Added .watchmanconfig file to rocksdb repo (#5593) 2019-07-19 15:00:33 -07:00
appveyor.yml Remove 2019 from appveyor (#7038) 2020-06-29 14:31:41 -07:00
AUTHORS Update RocksDB Authors File 2017-10-18 14:42:10 -07:00
CMakeLists.txt Introduce a mechanism to dump out blocks from block cache and re-insert to secondary cache (#8912) 2021-10-07 11:42:31 -07:00
CODE_OF_CONDUCT.md Adopt Contributor Covenant 2019-08-29 23:21:01 -07:00
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
defs.bzl Make testpilot recognize that these tests have coverage instrumentation 2020-03-20 11:23:23 -07:00
DUMP_FORMAT.md First version of rocksdb_dump and rocksdb_undump. 2015-06-19 16:24:36 -07:00
HISTORY.md Update HISTORY.md for #8428 (#9001) 2021-10-08 17:00:30 -07:00
INSTALL.md Update installation instructions (#8158) 2021-04-06 16:02:04 -07:00
issue_template.md Add Google Group to Issue Template 2020-01-28 14:40:37 -08:00
LANGUAGE-BINDINGS.md Update branch name to "main" in README/LANGUAGE_BINDINGS (#8727) 2021-09-01 15:26:34 -07:00
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 Point bzip2 download address to http://sourceware.org/pub/bzip2 (#8986) 2021-10-05 11:21:46 -07:00
PLUGINS.md Add ZenFS to plugin list (#8218) 2021-04-22 11:12:40 -07:00
README.md Update branch name to "main" in README/LANGUAGE_BINDINGS (#8727) 2021-09-01 15:26:34 -07:00
ROCKSDB_LITE.md Fix some typos in comments and docs. 2018-03-08 10:27:25 -08:00
src.mk Introduce a mechanism to dump out blocks from block cache and re-insert to secondary cache (#8912) 2021-10-07 11:42:31 -07:00
TARGETS Introduce a mechanism to dump out blocks from block cache and re-insert to secondary cache (#8912) 2021-10-07 11:42:31 -07:00
thirdparty.inc Fix build jemalloc api (#5470) 2019-06-24 17:40:32 -07:00
USERS.md Update USERS.md (#8923) 2021-10-01 16:10:35 -07:00
Vagrantfile Adding CentOS 7 Vagrantfile & build script 2018-02-26 15:27:17 -08:00
WINDOWS_PORT.md Update branch name in WINDOWS_PORT.md (#8745) 2021-09-01 19:26:39 -07:00

README.md

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

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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/main/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.