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A library that provides an embeddable, persistent key-value store for fast storage.
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Yueh-Hsuan Chiang dc81efe415 Change the log-level of DB summary and options from INFO_LEVEL to WARN_LEVEL 
Summary: Change the log-level of DB summary and options from INFO_LEVEL to WARN_LEVEL

Test Plan:
Use db_bench to verify the log level.

Sample output:
    2015/05/22-00:20:39.778064 7fff75b41300 [WARN] RocksDB version: 3.11.0
    2015/05/22-00:20:39.778095 7fff75b41300 [WARN] Git sha rocksdb_build_git_sha:7fee8775a459134c4cb04baae5bd1687e268f2a0
    2015/05/22-00:20:39.778099 7fff75b41300 [WARN] Compile date May 22 2015
    2015/05/22-00:20:39.778101 7fff75b41300 [WARN] DB SUMMARY
    2015/05/22-00:20:39.778145 7fff75b41300 [WARN] SST files in /tmp/rocksdbtest-691931916/dbbench dir, Total Num: 0, files:
    2015/05/22-00:20:39.778148 7fff75b41300 [WARN] Write Ahead Log file in /tmp/rocksdbtest-691931916/dbbench:
    2015/05/22-00:20:39.778150 7fff75b41300 [WARN]          Options.error_if_exists: 0
    2015/05/22-00:20:39.778152 7fff75b41300 [WARN]        Options.create_if_missing: 1
    2015/05/22-00:20:39.778153 7fff75b41300 [WARN]          Options.paranoid_checks: 1

Reviewers: MarkCallaghan, igor, kradhakrishnan

Reviewed By: igor

Subscribers: sdong, dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D38835
2015-05-22 11:54:59 -07:00
arcanist_util Integrate Jenkins with Phabricator 2015-04-07 11:56:29 -07:00
build_tools Build for CYGWIN 2015-04-23 21:33:44 -07:00
coverage Fix coverage script 2014-11-03 14:53:00 -08:00
db Change the log-level of DB summary and options from INFO_LEVEL to WARN_LEVEL 2015-05-22 11:54:59 -07:00
doc Remove seek compaction 2014-06-20 10:23:02 +02:00
examples Fix formatting 2015-02-09 09:53:30 -08:00
hdfs Remove unused parameter in CancelAllBackgroundWork 2015-03-16 21:07:54 -07:00
include Set stats_dump_period_sec to 600 by default 2015-05-21 14:22:16 -04:00
java Bugfix remove deprecated option use which was removed in previous commit 019ecd1932 2015-04-30 23:16:04 +01:00
port Build for CYGWIN 2015-04-23 21:33:44 -07:00
table Add more table properties to EventLogger 2015-05-12 15:53:55 -07:00
third-party Update COMMIT.md 2015-03-30 17:48:16 -07:00
tools Add Size-GB column to benchmark reports 2015-05-02 07:46:12 -07:00
util Change the log-level of DB summary and options from INFO_LEVEL to WARN_LEVEL 2015-05-22 11:54:59 -07:00
utilities API to fetch from both a WriteBatchWithIndex and the db 2015-05-11 14:51:51 -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
CONTRIBUTING.md facebook accounts are not required for CLA signers 2014-07-08 05:57:54 -04:00
HISTORY.md [Public API Change] Make DB::GetDbIdentity() be const function. 2015-05-21 11:01:48 -07:00
INSTALL.md Optimize default compile to compilation platform by default 2014-12-15 11:29:41 +01:00
LICENSE Fix copyright year 2014-03-12 12:06:58 -07:00
Makefile Run tests sequentally if J=1 2015-05-22 09:11:29 -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 RocksDBLite 2014-04-15 13:39:26 -07:00
src.mk Add more table properties to EventLogger 2015-05-12 15:53:55 -07:00
USERS.md Update USERS.md 2015-05-04 15:27:59 -07:00
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/