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Bradley Grainger 2d02ec6533 Add separate Read/WriteUnlock methods in MutexRW. 
Some platforms, particularly Windows, do not have a single method that can
release both a held reader lock and a held writer lock; instead, a
separate method (ReleaseSRWLockShared or ReleaseSRWLockExclusive) must be
called in each case.

This may also be necessary to back MutexRW with a shared_mutex in C++14;
the current language proposal includes both an unlock() and a
shared_unlock() method.
 		2014-06-16 15:41:46 -07:00
build_tools give correct metric name for grep in regression script 2014-06-10 16:32:09 -07:00
coverage Disable the html-based coverage report by default 2014-02-06 12:58:13 -08:00
db Add separate Read/WriteUnlock methods in MutexRW. 2014-06-16 15:41:46 -07:00
doc doc: table_stats_collectors -> table_properties_collectors. 2014-02-07 12:19:25 -08:00
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 Don't compress block bigger than 2GB 2014-06-09 12:26:09 -07:00
java [Java] Improve documentation for RocksEnv and its C++ resource. 2014-06-07 17:27:03 -07:00
linters allow lambda function syntax in cpplint 2014-02-20 12:47:05 -08:00
port Add separate Read/WriteUnlock methods in MutexRW. 2014-06-16 15:41:46 -07:00
table prefetch bloom filter data block for L0 files 2014-06-12 10:06:18 -07:00
third-party/rapidjson Add rapidjson to RocksDB 2014-05-15 16:07:05 -07:00
tools Fix sst_dump for PlainTable 2014-06-12 11:03:03 -07:00
util Add separate Read/WriteUnlock methods in MutexRW. 2014-06-16 15:41:46 -07:00
utilities Remove upper bound for rate limiting unit test 2014-06-03 13:58:44 -07:00
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INSTALL.md Better INSTALL.md and Makefile rules 2014-05-07 16:51:30 -07:00
LICENSE Fix copyright year 2014-03-12 12:06:58 -07:00
Makefile Move master version to 3.2 2014-05-23 10:27:56 -07:00
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README.md Update README.md 2014-06-13 14:11:10 -07:00
ROCKSDB_LITE.md RocksDBLite 2014-04-15 13:39:26 -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 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 an 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/