A library that provides an embeddable, persistent key-value store for fast storage.
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Siying Dong abb1a8fc23 Add a unit test to assert number of preads (#4657)
Summary:
We used to have a bug, which caused every block to be read twice, and none of our tests caught it. Add a very simply unit test to make sure that when reading a data block, we only issue one pread against the SST file.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4657

Differential Revision: D13005260

Pulled By: siying

fbshipit-source-id: 03167b554ad2451192b1707415536d7d05e9026c
2018-11-13 12:52:19 -08:00
buckifier Change BUCK template files (#4624) 2018-11-02 14:22:13 -07:00
build_tools Use -Os for lite release build (#4652) 2018-11-07 22:10:28 -08:00
cache Update all unique/shared_ptr instances to be qualified with namespace std (#4638) 2018-11-09 11:19:58 -08:00
cmake Search paths provided by intel's "tbbvars.sh". 2018-05-07 14:28:36 -07:00
coverage Remove unused imports, from python scripts. (#4057) 2018-06-26 12:43:04 -07:00
db Add a unit test to assert number of preads (#4657) 2018-11-13 12:52:19 -08:00
docs Update WritePrepared blog post with latest results (#4494) 2018-10-15 14:01:31 -07:00
env Update all unique/shared_ptr instances to be qualified with namespace std (#4638) 2018-11-09 11:19:58 -08:00
examples Pin top-level index on partitioned index/filter blocks (#4037) 2018-06-22 15:27:46 -07:00
hdfs Update all unique/shared_ptr instances to be qualified with namespace std (#4638) 2018-11-09 11:19:58 -08:00
include/rocksdb Expose num entries and deletions of sst files (#4623) 2018-11-13 11:52:19 -08:00
java Divide NO_ITERATORS into two counters NO_ITERATOR_CREATED and NO_ITERATOR_DELETE (#4498) 2018-11-13 11:46:32 -08:00
memtable Update all unique/shared_ptr instances to be qualified with namespace std (#4638) 2018-11-09 11:19:58 -08:00
monitoring Add PerfContextByLevel to provide per level perf context information (#4226) 2018-10-17 11:19:40 -07:00
options Remove redundant member var and set options (#4631) 2018-11-12 12:24:26 -08:00
port Update all unique/shared_ptr instances to be qualified with namespace std (#4638) 2018-11-09 11:19:58 -08:00
table Update all unique/shared_ptr instances to be qualified with namespace std (#4638) 2018-11-09 11:19:58 -08:00
third-party Support pragma once in all header files and cleanup some warnings (#4339) 2018-09-05 18:13:31 -07:00
tools Add unique key number changing statistics to Trace_analyzer (#4646) 2018-11-12 08:26:50 -08:00
util Backup engine support for direct I/O reads (#4640) 2018-11-13 11:17:25 -08:00
utilities BlobDB: use char array instead of string as buffer (#4662) 2018-11-13 12:49:29 -08:00
.clang-format A script that automatically reformat affected lines 2014-01-14 12:21:24 -08:00
.gitignore RocksDB Trace Analyzer (#4091) 2018-08-13 11:44:02 -07:00
.lgtm.yml Create lgtm.yml for LGTM.com C/C++ analysis (#4058) 2018-06-26 12:43:04 -07:00
.travis.yml Fix printf formatting on MacOS (#4533) 2018-10-19 14:46:09 -07:00
appveyor.yml Upgrade Appveyor to VS2017 2018-02-01 13:57:01 -08:00
AUTHORS Update RocksDB Authors File 2017-10-18 14:42:10 -07:00
CMakeLists.txt Use -Os for lite release build (#4652) 2018-11-07 22:10:28 -08:00
CODE_OF_CONDUCT.md Add Code of Conduct 2017-12-05 18:42:35 -08:00
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 Divide NO_ITERATORS into two counters NO_ITERATOR_CREATED and NO_ITERATOR_DELETE (#4498) 2018-11-13 11:46:32 -08:00
INSTALL.md Enable compilation on OpenBSD 2018-03-19 12:30:05 -07:00
issue_template.md Add a template for issues 2017-09-29 11:41:28 -07:00
LANGUAGE-BINDINGS.md Added PingCaps Rust RocksDB and ObjectiveRocks (#4065) 2018-06-27 15:43:21 -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 Automatically set LITE=1 on passing OPT="-DROCKSDB_LITE" (#4671) 2018-11-12 16:58:54 -08:00
README.md Create lgtm.yml for LGTM.com C/C++ analysis (#4058) 2018-06-26 12:43:04 -07:00
ROCKSDB_LITE.md Fix some typos in comments and docs. 2018-03-08 10:27:25 -08:00
src.mk port folly::JemallocNodumpAllocator (#4534) 2018-10-26 17:29:18 -07:00
TARGETS port folly::JemallocNodumpAllocator (#4534) 2018-10-26 17:29:18 -07:00
thirdparty.inc Provide a way to override windows memory allocator with jemalloc for ZSTD 2018-06-04 12:12:48 -07:00
USERS.md Adding IOTA Foundation to USERS.MD (#4436) 2018-10-02 10:03:46 -07:00
Vagrantfile Adding CentOS 7 Vagrantfile & build script 2018-02-26 15:27:17 -08:00
WINDOWS_PORT.md Add GCC 8 to Travis (#3433) 2018-07-13 10:58:06 -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 specially 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.