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A library that provides an embeddable, persistent key-value store for fast storage.
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Java 10.3%
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Vlad Balan a40ce219b9 Adding merge functions to RocksDBJava 
Summary:
Added support for the merge operation to RocksJava.
You can specify a merge function to be used on the current database.
The merge function can either be one of the functions defined in
utilities/merge_operators.h, which can be specified through its
corresponding name, or a user-created function that needs to be
encapsulated in a JNI object in order to be used. Examples are
provided for both use cases.

Test Plan: There are unit test in MergeTest.java

Reviewers: ankgup87

Subscribers: vladb38

Differential Revision: https://reviews.facebook.net/D24525
2014-10-13 14:40:16 -07:00
build_tools Cross-platform fix version.sh 2014-10-04 11:17:06 +02:00
coverage Disable the html-based coverage report by default 2014-02-06 12:58:13 -08:00
db Fixed compile error on Mac: default arguments for lambda expressions 2014-10-10 14:10:16 -07:00
doc Remove seek compaction 2014-06-20 10:23:02 +02:00
examples Make it easier to start using RocksDB 2014-05-10 10:49:33 -07:00
hdfs hdfs cleanup and compile test against CDH 4.4. 2014-05-20 17:22:12 -04:00
helpers/memenv Expose in memory Env to the world 2014-04-14 12:28:15 -07:00
include WriteBatchWithIndex supports an iterator that merge its change with a base iterator. 2014-10-10 19:02:58 -07:00
java Adding merge functions to RocksDBJava 2014-10-13 14:40:16 -07:00
linters Removed code which prevents arc lint from working properly. 2014-10-07 17:40:19 +02:00
port Avoid off-by-one error when using readlink 2014-09-05 20:50:29 -07:00
table Merge pull request #327 from dalgaaf/wip-da-SCA-20141001 2014-10-02 10:59:52 -07:00
third-party/rapidjson Fix a rapidjson compile error in mac. 2014-06-23 17:09:24 -06:00
tools minor update to benchmark script 2014-10-10 09:55:40 -07:00
util Fixed Mac compile error in util/options_test.cc 2014-10-10 14:20:59 -07:00
utilities WriteBatchWithIndex supports an iterator that merge its change with a base iterator. 2014-10-10 19:02:58 -07:00
.arcconfig Improve/fix bugs for the cpp linter 2014-02-13 17:48:11 -08:00
.clang-format A script that automatically reformat affected lines 2014-01-14 12:21:24 -08:00
.gitignore fix java doc directory in git ignore 2014-10-06 08:23:31 -07:00
.travis.yml Only run make unity on travis instead of make check 2014-09-18 09:53:13 -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 WriteBatchWithIndex to support an option to overwrite rows when operating the same key 2014-10-10 15:19:21 -07:00
INSTALL.md Update INSTALL.md 2014-10-01 11:15:42 -07:00
LICENSE Fix copyright year 2014-03-12 12:06:58 -07:00
Makefile merge master to resolve merge conflicts 2014-10-06 08:22:55 -07:00
PATENTS Fix the patent format 2013-10-16 15:37:32 -07:00
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
Vagrantfile Package generation for Ubuntu and CentOS 2014-09-29 16:09:46 -07:00

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/