A library that provides an embeddable, persistent key-value store for fast storage.
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Peter Dillinger e8f997ca59 Update comment on max_valid_backups_to_open (#6105)
Summary:
To reflect changes in PR https://github.com/facebook/rocksdb/issues/6072

This comment also implies that a seemingly valid use-case for
max_valid_backups_to_open is flawed: even if you only want to add a new
backup without trying to delete, you might need to clean up after a
backup creation that never finished. To clean up properly requires
opening all backups to get proper ref counts on shared files.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6105

Test Plan: code comment only

Differential Revision: D18736716

Pulled By: pdillinger

fbshipit-source-id: 2447c0000eefe3a4ca606926bfe922a8456b0cb7
2019-11-27 15:06:58 -08:00
buckifier Abandon use of folly::Optional (#6036) 2019-11-14 14:04:15 -08:00
build_tools New Bloom filter implementation for full and partitioned filters (#6007) 2019-11-13 16:44:01 -08:00
cache Misc hashing updates / upgrades (#5909) 2019-10-24 17:16:46 -07:00
cmake Compatible changes for cmake (#6045) 2019-11-22 08:19:48 -08:00
coverage Fix interpreter lines for files with python2-only syntax. 2019-07-09 10:51:37 -07:00
db Fix a potential bug scheduling unnecessary threads (#6104) 2019-11-27 14:48:49 -08:00
docs Blog post for write_unprepared (#5711) 2019-08-15 14:41:13 -07:00
env Add Env::SanitizeEnvOptions (#5885) 2019-10-14 12:25:00 -07:00
examples Add asserts in transaction example (#6055) 2019-11-20 14:18:51 -08:00
file Apply formatter to recent 200+ commits. (#5830) 2019-09-20 12:04:26 -07:00
hdfs Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
include/rocksdb Update comment on max_valid_backups_to_open (#6105) 2019-11-27 15:06:58 -08:00
java fix typo (#6099) 2019-11-27 10:26:42 -08:00
logging Apply formatter to recent 200+ commits. (#5830) 2019-09-20 12:04:26 -07:00
memory Charge block cache for cache internal usage (#5797) 2019-09-16 15:26:21 -07:00
memtable Misc hashing updates / upgrades (#5909) 2019-10-24 17:16:46 -07:00
monitoring Apply formatter to recent 200+ commits. (#5830) 2019-09-20 12:04:26 -07:00
options Allow fractional bits/key in BloomFilterPolicy (#6092) 2019-11-26 15:59:34 -08:00
port Work around weird unused errors with Mingw (#6075) 2019-11-26 21:42:29 -08:00
table Expose and elaborate FilterBuildingContext (#6088) 2019-11-26 18:24:10 -08:00
test_util New Bloom filter implementation for full and partitioned filters (#6007) 2019-11-13 16:44:01 -08:00
third-party Refactor/consolidate legacy Bloom implementation details (#5784) 2019-09-16 16:17:09 -07:00
tools Add format_version=5 to db_crashtest (#6102) 2019-11-27 13:19:11 -08:00
trace_replay Misc hashing updates / upgrades (#5909) 2019-10-24 17:16:46 -07:00
util Work around weird unused errors with Mingw (#6075) 2019-11-26 21:42:29 -08:00
utilities Fix BlobDB compilation on older GCC versions 2019-11-27 13:09:09 -08:00
.clang-format A script that automatically reformat affected lines 2014-01-14 12:21:24 -08:00
.gitignore Make buckifier python3 compatible (#5922) 2019-10-23 13:52:27 -07:00
.lgtm.yml Create lgtm.yml for LGTM.com C/C++ analysis (#4058) 2018-06-26 12:43:04 -07:00
.travis.yml Partial rebalance of TEST_GROUPs for Travis (#6010) 2019-11-07 09:50:59 -08:00
.watchmanconfig Added .watchmanconfig file to rocksdb repo (#5593) 2019-07-19 15:00:33 -07:00
appveyor.yml New API to get all merge operands for a Key (#5604) 2019-08-06 14:26:44 -07:00
AUTHORS Update RocksDB Authors File 2017-10-18 14:42:10 -07:00
CMakeLists.txt Use lowercase for shlwapi.lib rpcrt4.lib (#6076) 2019-11-26 13:28:32 -08:00
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 Add clarifying/instructive header to TARGETS and defs.bzl 2019-11-05 20:20:33 -08:00
DUMP_FORMAT.md First version of rocksdb_dump and rocksdb_undump. 2015-06-19 16:24:36 -07:00
HISTORY.md Fix a potential bug scheduling unnecessary threads (#6104) 2019-11-27 14:48:49 -08:00
INSTALL.md Update the version of the dependencies used by the RocksJava static build (#4761) 2018-12-18 20:25:43 -08:00
issue_template.md Add a template for issues 2017-09-29 11:41:28 -07:00
LANGUAGE-BINDINGS.md LANGUAGE-BINDINGS.md: mention python-rocksdb 2019-03-20 11:10:48 -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 Add shared library for musl-libc (#3143) 2019-11-26 18:24:09 -08:00
README.md Replaced some words (#5877) 2019-10-07 12:28:09 -07:00
ROCKSDB_LITE.md Fix some typos in comments and docs. 2018-03-08 10:27:25 -08:00
src.mk FilterPolicy consolidation, part 2/2 (#5966) 2019-10-24 15:44:51 -07:00
TARGETS Abandon use of folly::Optional (#6036) 2019-11-14 14:04:15 -08:00
thirdparty.inc Fix build jemalloc api (#5470) 2019-06-24 17:40:32 -07:00
USERS.md Add avrio to USERS.md (#5748) 2019-09-15 21:29:09 -07:00
Vagrantfile Adding CentOS 7 Vagrantfile & build script 2018-02-26 15:27:17 -08:00
WINDOWS_PORT.md #5145 , rename port/dirent.h to port/port_dirent.h to avoid compile err when use port dir as header dir output (#5152) 2019-04-04 11:38:19 -07:00

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

Linux/Mac Build Status Windows Build status PPC64le 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 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/

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.