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A library that provides an embeddable, persistent key-value store for fast storage.
3,678 Commits 152 Branches 236 Tags 271 MiB
C++ 82.1%
Java 10.3%
C 2.5%
Python 1.7%
Perl 1.1%
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Yueh-Hsuan Chiang b7a2369fb2 Revert "Replace std::priority_queue in MergingIterator with custom heap" 
Summary:
This patch reverts "Replace std::priority_queue in MergingIterator
with custom heap" (commit commit b6655a679d)
as it causes db_stress failure.

Test Plan: ./db_stress --test_batches_snapshots=1 --threads=32 --write_buffer_size=4194304 --destroy_db_initially=0 --reopen=20 --readpercent=45 --prefixpercent=5 --writepercent=35 --delpercent=5 --iterpercent=10 --db=/tmp/rocksdb_crashtest_KdCI5F --max_key=100000000 --mmap_read=0 --block_size=16384 --cache_size=1048576 --open_files=500000 --verify_checksum=1 --sync=0 --progress_reports=0 --disable_wal=0 --disable_data_sync=1 --target_file_size_base=2097152 --target_file_size_multiplier=2 --max_write_buffer_number=3 --max_background_compactions=20 --max_bytes_for_level_base=10485760 --filter_deletes=0 --memtablerep=prefix_hash --prefix_size=7 --ops_per_thread=200 --kill_random_test=97

Reviewers: igor, anthony, lovro, sdong

Reviewed By: sdong

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D41343
2015-07-07 14:45:20 -07:00
arcanist_util Integrate Jenkins with Phabricator 2015-04-07 11:56:29 -07:00
build_tools Add rpath option to production builds for 4.8.1 toolchain 2015-06-30 13:30:54 -07:00
coverage Fix coverage script 2014-11-03 14:53:00 -08:00
db Enabling trivial move in universal compaction 2015-07-07 14:18:55 -07:00
doc Remove seek compaction 2014-06-20 10:23:02 +02:00
examples [API Change] Improve EventListener::OnFlushCompleted interface 2015-06-05 12:28:51 -07:00
hdfs Add Env::GetThreadID(), which returns the ID of the current thread. 2015-06-11 14:18:02 -07:00
include Enabling trivial move in universal compaction 2015-07-07 14:18:55 -07:00
java [RocksJava] Fixed test failures 2015-07-01 23:22:03 -07:00
port Build for CYGWIN 2015-04-23 21:33:44 -07:00
table Revert "Replace std::priority_queue in MergingIterator with custom heap" 2015-07-07 14:45:20 -07:00
third-party Update COMMIT.md 2015-03-30 17:48:16 -07:00
tools Fix mac compile 2015-06-26 10:29:24 -07:00
util Revert "Replace std::priority_queue in MergingIterator with custom heap" 2015-07-07 14:45:20 -07:00
utilities Initialize threads later in constructor 2015-07-07 10:49:16 -07:00
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.travis.yml Don't preinstall jemalloc in Travis 2015-04-24 18:43:07 -07:00
AUTHORS Add AUTHORS file. Fix #203 2014-09-29 10:52:18 -07:00
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DUMP_FORMAT.md First version of rocksdb_dump and rocksdb_undump. 2015-06-19 16:24:36 -07:00
HISTORY.md Enabling trivial move in universal compaction 2015-07-07 14:18:55 -07:00
INSTALL.md Fix broken gflags link 2015-06-22 09:31:52 -07:00
LICENSE Fix copyright year 2014-03-12 12:06:58 -07:00
Makefile Remove -Wl,--no-as-needed flag when making shared_lib in OSX and IOS 2015-06-23 16:32:59 -07:00
PATENTS Update Patent Grant. 2015-04-13 10:33:43 +01:00
README.md Replaced "built on on earlier work" by "built on earlier work" in README.md 2014-09-17 01:16:17 -07:00
ROCKSDB_LITE.md Optimistic Transactions 2015-05-29 14:36:35 -07:00
src.mk Add wal files to Checkpoint for multiple column families. 2015-06-19 16:08:31 -07:00
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Vagrantfile RocksDB on FreeBSD support 2015-02-26 15:19:17 -08:00

README.md

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

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 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/