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Xiaopeng Zhang c603f2f898 support getUsage and getPinnedUsage in JavaAPI for Cache (#7925) 
Summary:
support getUsage and getPinnedUsage in JavaAPI for Cache
also fix a typo in LRUCacheTest.java that the highPriPoolRatio is not valid(set 5, I guess it means 0.05)

Pull Request resolved: https://github.com/facebook/rocksdb/pull/7925

Reviewed By: mrambacher

Differential Revision: D26900241

Pulled By: ajkr

fbshipit-source-id: 735d1e40a16fa8919c89c7c7154ba7f81208ec33
 		2021-03-17 09:30:33 -07:00
.circleci Add circleci format_compatible nightly build (#7926) 2021-02-09 20:48:53 -08:00
.github/workflows Update clang-format-diff.py path (#7944) 2021-02-09 12:49:38 -08:00
buckifier Update zstd in buck build (#7923) 2021-02-08 14:46:01 -08:00
build_tools Extract test cases correctly in run_ci_db_test.ps1 script (#7989) 2021-02-23 14:25:42 -08:00
cache Add a SystemClock class to capture the time functions of an Env (#7858) 2021-01-25 22:09:11 -08:00
cmake Add `find_dependency()` in cmake config file. (#6791) 2020-05-12 21:18:29 -07:00
coverage Find the correct gcov (#6904) 2020-06-01 16:33:05 -07:00
db Fix a bug in key comparison when index type is kBinarySearchWithFirstKey (#8062) 2021-03-15 17:44:52 -07:00
db_stress_tool Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
docs Update github-pages and dependencies (#7850) 2021-01-11 12:48:01 -08:00
env Make ChRootEnv, EncryptedEnv, and TimedEnv into FileSystems (#7968) 2021-03-15 19:50:11 -07:00
examples make:Fix c header prototypes (#7994) 2021-03-09 20:44:23 -08:00
file Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
fuzz Remove Legacy and Custom FileWrapper classes from header files (#7851) 2021-01-28 22:10:32 -08:00
hdfs fix build with 'USE_HDFS' on windows (#6950) 2020-06-12 16:21:50 -07:00
include/rocksdb Make ChRootEnv, EncryptedEnv, and TimedEnv into FileSystems (#7968) 2021-03-15 19:50:11 -07:00
java support getUsage and getPinnedUsage in JavaAPI for Cache (#7925) 2021-03-17 09:30:33 -07:00
logging Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
memory slightly improve jemalloc allocator API header (#7592) 2020-10-28 13:47:12 -07:00
memtable Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
monitoring Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
options Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
plugin Makefile support to statically link external plugin code (#7918) 2021-02-10 08:35:34 -08:00
port Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
table Fix a bug in key comparison when index type is kBinarySearchWithFirstKey (#8062) 2021-03-15 17:44:52 -07:00
test_util Add ROCKSDB_GTEST_BYPASS (#8048) 2021-03-12 16:02:06 -08:00
third-party Fix Compilation on ppc64le using Clang 11 (#7713) 2020-12-01 11:21:44 -08:00
tools Add new db_bench --benchmarks options for controlling compaction (#8027) 2021-03-17 09:12:27 -07:00
trace_replay Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
util Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
utilities Make ChRootEnv, EncryptedEnv, and TimedEnv into FileSystems (#7968) 2021-03-15 19:50:11 -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 use `LIB_MODE=shared` on Travis `make` commands (#8043) 2021-03-08 17:21:24 -08:00
.watchmanconfig Added .watchmanconfig file to rocksdb repo (#5593) 2019-07-19 15:00:33 -07:00
AUTHORS Update RocksDB Authors File 2017-10-18 14:42:10 -07:00
CMakeLists.txt Move a test file to a better location (#8054) 2021-03-15 15:03:27 -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
DUMP_FORMAT.md First version of rocksdb_dump and rocksdb_undump. 2015-06-19 16:24:36 -07:00
HISTORY.md Add new db_bench --benchmarks options for controlling compaction (#8027) 2021-03-17 09:12:27 -07:00
INSTALL.md Update the version of the dependencies used by the RocksJava static build (#4761) 2018-12-18 20:25:43 -08:00
LANGUAGE-BINDINGS.md Add RestoreDBFromLatestBackup to C API, add new C# package (#7092) 2020-07-08 11:56:41 -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 Move a test file to a better location (#8054) 2021-03-15 15:03:27 -07:00
PLUGINS.md Makefile support to statically link external plugin code (#7918) 2021-02-10 08:35:34 -08:00
README.md Fix the CI badge for ppc64le Jenkins (#7561) 2020-10-16 09:00:56 -07:00
ROCKSDB_LITE.md Fix some typos in comments and docs. 2018-03-08 10:27:25 -08:00
TARGETS Move a test file to a better location (#8054) 2021-03-15 15:03:27 -07:00
USERS.md Add Apache Doris to USERS (#7865) 2021-01-19 15:31:56 -08:00
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
appveyor.yml Remove 2019 from appveyor (#7038) 2020-06-29 14:31:41 -07:00
defs.bzl Make testpilot recognize that these tests have coverage instrumentation 2020-03-20 11:23:23 -07:00
issue_template.md Add Google Group to Issue Template 2020-01-28 14:40:37 -08:00
src.mk support getUsage and getPinnedUsage in JavaAPI for Cache (#7925) 2021-03-17 09:30:33 -07:00
thirdparty.inc Fix build jemalloc api (#5470) 2019-06-24 17:40:32 -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/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.