A library that provides an embeddable, persistent key-value store for fast storage.
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Hui Xiao 560fe70233 Add new API CacheReservationManager::GetDummyEntrySize() (#9072)
Summary:
Note: it might conflict with another CRM related PR https://github.com/facebook/rocksdb/pull/9071 and so will merge after that's merged.

Context:
As `CacheReservationManager` being used by more memory users, it is convenient to retrieve the dummy entry size for `CacheReservationManager` instead of hard-coding `256 * 1024` in writing tests. Plus it allows more flexibility to change our implementation on dummy entry size.

A follow-up PR is needed to replace those hard-coded dummy entry size value in `db_test2.cc`, `db_write_buffer_manager_test.cc`, `write_buffer_manager_test.cc`, `table_test.cc` and the ones introduced in https://github.com/facebook/rocksdb/pull/9072#issue-1034326069.
- Exposed the private static constexpr `kDummyEntrySize` through public static `CacheReservationManager::GetDummyEntrySize()`

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9072

Test Plan:
- Passing new tests
- Passing existing tests

Reviewed By: ajkr

Differential Revision: D32043684

Pulled By: hx235

fbshipit-source-id: ddefc6921c052adab6a2cda2394eb26da3076a50
2021-11-01 14:46:09 -07:00
.circleci Fix EnvLibrados and add to CI (#9088) 2021-10-29 08:19:03 -07:00
.github/workflows Add (& fix) some simple source code checks (#8821) 2021-09-07 21:19:27 -07:00
buckifier Update buckify scripts (#9104) 2021-11-01 10:11:18 -07:00
build_tools Make format-diff.sh locale-independent (#9079) 2021-10-27 12:26:36 -07:00
cache Add new API CacheReservationManager::GetDummyEntrySize() (#9072) 2021-11-01 14:46:09 -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 Try to start TTL earlier with kMinOverlappingRatio is used (#8749) 2021-11-01 14:36:31 -07:00
db_stress_tool Avoid div-by-zero error in db_stress (#9086) 2021-10-31 22:16:03 -07:00
docs Misc doc fixes (#8983) 2021-10-07 11:22:17 -07:00
env Experimental support for SST unique IDs (#8990) 2021-10-18 23:32:01 -07:00
examples Add (& fix) some simple source code checks (#8821) 2021-09-07 21:19:27 -07:00
file Add (Live)FileStorageInfo API (#8968) 2021-10-16 10:04:32 -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 Fix EnvLibrados and add to CI (#9088) 2021-10-29 08:19:03 -07:00
java Java wrapper for blob_gc_force_threshold as blobGarbageCollectionForceThreshold (#9109) 2021-11-01 11:59:10 -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 Fix race in WriteBufferManager (#9009) 2021-10-12 00:16:21 -07:00
microbench Add micro-benchmark support (#8493) 2021-07-08 18:22:45 -07:00
monitoring remove bad extra RecordTick(stats_, WRITE_WITH_WAL) (#9064) 2021-11-01 11:43:14 -07:00
options Implement XXH3 block checksum type (#9069) 2021-10-28 22:15:17 -07:00
plugin Makefile support to statically link external plugin code (#7918) 2021-02-10 08:35:34 -08:00
port Fix incorrect order of comments in win_thread.cc (#9033) 2021-10-27 13:25:01 -07:00
table Minor improvement to #8428 (Account for dictionary-building buffer in global memory limit) (#9032) 2021-11-01 14:28:09 -07:00
test_util SyncPoint::Process thrashes heap ... fix it (#9023) 2021-10-15 13:30:29 -07:00
third-party Add support for building on s390x platform (#8962) 2021-10-22 10:13:15 -07:00
tools Try to start TTL earlier with kMinOverlappingRatio is used (#8749) 2021-11-01 14:36:31 -07:00
trace_replay Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
util Add support for building on s390x platform (#8962) 2021-10-22 10:13:15 -07:00
utilities Fix a compaction bug for write-prepared txn (#9061) 2021-10-29 15:23:17 -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 Temporarily disable s390x+cmake* Travis jobs (#9095) 2021-10-29 11:06:50 -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 Add support for building on s390x platform (#8962) 2021-10-22 10:13:15 -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 Try to start TTL earlier with kMinOverlappingRatio is used (#8749) 2021-11-01 14:36:31 -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 Fix EnvLibrados and add to CI (#9088) 2021-10-29 08:19:03 -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 Experimental support for SST unique IDs (#8990) 2021-10-18 23:32:01 -07:00
TARGETS internal_repo_rocksdb/repo 2021-10-29 19:34:39 -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

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.