rocksdb

fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph

Levi Tamasi 6301dbe7a7 Use function objects as deleters in the block cache (#6545 ) Summary: As the first step of reintroducing eviction statistics for the block cache, the patch switches from using simple function pointers as deleters to function objects implementing an interface. This will enable using deleters that have state, like a smart pointer to the statistics object that is to be updated when an entry is removed from the cache. For now, the patch adds a deleter template class `SimpleDeleter`, which simply casts the `value` pointer to its original type and calls `delete` or `delete[]` on it as appropriate. Note: to prevent object lifecycle issues, deleters must outlive the cache entries referring to them; `SimpleDeleter` ensures this by using the ("leaky") Meyers singleton pattern. Pull Request resolved: https://github.com/facebook/rocksdb/pull/6545 Test Plan: `make asan_check` Reviewed By: siying Differential Revision: D20475823 Pulled By: ltamasi fbshipit-source-id: fe354c33dd96d9bafc094605462352305449a22a		5 years ago
.circleci	Migrate AppVeyor to CircleCI (#6518 )	5 years ago
buckifier	Buck config: Re-enable liburing under Linux (#6451 )	5 years ago
build_tools	Force Java version on Travis CI (#6512 )	5 years ago
cache	Use function objects as deleters in the block cache (#6545 )	5 years ago
cmake	cmake: do not build tests for Release build and cleanups (#5916 )	5 years ago
coverage	Update a few scripts to be python3 compatible (#6525 )	5 years ago
db	Use function objects as deleters in the block cache (#6545 )	5 years ago
db_stress_tool	Remove GetSortedWalFiles/GetCurrentWalFile from the crash test (#6491 )	5 years ago
docs	Log warning for high bits/key in legacy Bloom filter (#6312 )	5 years ago
env	Simplify migration to FileSystem API (#6552 )	5 years ago
examples	Use DestroyColumnFamilyHandle instead of directly deleting column family handle (#6505 )	5 years ago
file	Create a thread in DeleteScheduler only when rate limit enabled (#6564 )	5 years ago
hdfs	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433 )	5 years ago
include/rocksdb	Use function objects as deleters in the block cache (#6545 )	5 years ago
java	Use an Amazon S3 bucket for downloading deps (#6526 )	5 years ago
logging	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433 )	5 years ago
memory	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433 )	5 years ago
memtable	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433 )	5 years ago
monitoring	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433 )	5 years ago
options	Simplify migration to FileSystem API (#6552 )	5 years ago
port	Support direct IO in RandomAccessFileReader::MultiRead (#6446 )	5 years ago
table	Use function objects as deleters in the block cache (#6545 )	5 years ago
test_util	Simplify migration to FileSystem API (#6552 )	5 years ago
third-party	Disable distributed mutex test for valgrind_test (#6553 )	5 years ago
tools	Re-update check_format_compatible.sh for default format_version=4 (#6598 )	5 years ago
trace_replay	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433 )	5 years ago
util	CompactRange() to use bottom pool when goes to bottommost level (#6593 )	5 years ago
utilities	Use function objects as deleters in the block cache (#6545 )	5 years ago
.clang-format	A script that automatically reformat affected lines	11 years ago
.gitignore	Separate timestamp related test from db_basic_test (#6516 )	5 years ago
.lgtm.yml	Create lgtm.yml for LGTM.com C/C++ analysis (#4058 )	7 years ago
.travis.yml	Exclude more Travis builds for each pull request (#6557 )	5 years ago
.watchmanconfig	Added .watchmanconfig file to rocksdb repo (#5593 )	6 years ago
AUTHORS	Update RocksDB Authors File	7 years ago
CMakeLists.txt	Attempt to recover from db with missing table files (#6334 )	5 years ago
CODE_OF_CONDUCT.md	Adopt Contributor Covenant	5 years ago
CONTRIBUTING.md	Add Code of Conduct	7 years ago
COPYING	Add GPLv2 as an alternative license.	8 years ago
DEFAULT_OPTIONS_HISTORY.md	options.delayed_write_rate use the rate of rate_limiter by default.	8 years ago
DUMP_FORMAT.md	First version of rocksdb_dump and rocksdb_undump.	10 years ago
HISTORY.md	Update default BBTO::format_version from 2 to 4 (#6582 )	5 years ago
INSTALL.md	Update the version of the dependencies used by the RocksJava static build (#4761 )	6 years ago
LANGUAGE-BINDINGS.md	LANGUAGE-BINDINGS.md: mention python-rocksdb	6 years ago
LICENSE.Apache	Change RocksDB License	8 years ago
LICENSE.leveldb	Add back the LevelDB license file	8 years ago
Makefile	Update a few scripts to be python3 compatible (#6525 )	5 years ago
README.md	Replaced some words (#5877 )	5 years ago
ROCKSDB_LITE.md	Fix some typos in comments and docs.	7 years ago
TARGETS	Attempt to recover from db with missing table files (#6334 )	5 years ago
USERS.md	add user nebula (#6271 )	5 years ago
Vagrantfile	Adding CentOS 7 Vagrantfile & build script	7 years ago
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 )	6 years ago
appveyor.yml	Separate timestamp related test from db_basic_test (#6516 )	5 years ago
defs.bzl	Make testpilot recognize that these tests have coverage instrumentation	5 years ago
issue_template.md	Add Google Group to Issue Template	5 years ago
src.mk	Attempt to recover from db with missing table files (#6334 )	5 years ago
thirdparty.inc	Fix build jemalloc api (#5470 )	6 years ago

README.md

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

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.