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liuhuahang ef5b384729 fix a few compile warnings 
1, const qualifiers on return types make no sense and will trigger a compile warning: warning: type qualifiers ignored on function return type [-Wignored-qualifiers]

2, class HistogramImpl has virtual functions and thus should have a virtual destructor

3, with some toolchain, the macro __STDC_FORMAT_MACROS is predefined and thus should be checked before define

Change-Id: I69747a03bfae88671bfbb2637c80d17600159c99
Signed-off-by: liuhuahang <liuhuahang@zerus.co>
2014-09-04 23:06:23 +08:00
build_tools Changes to support unity build: 2014-08-11 13:22:47 -04:00
coverage
db fix a few compile warnings 2014-09-04 23:06:23 +08:00
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
include comments about the BlockBasedTableOptions migration in Options 2014-09-03 17:01:34 -07:00
java JNI changes corresponding to BlockBasedTableOptions migration 2014-08-25 14:22:55 -07:00
linters
port generic rate limiter 2014-07-08 11:41:57 -07:00
table fix a few compile warnings 2014-09-04 23:06:23 +08:00
third-party/rapidjson Fix a rapidjson compile error in mac. 2014-06-23 17:09:24 -06:00
tools add assert to db Put in db_stress test 2014-09-02 13:21:59 -07:00
util fix a few compile warnings 2014-09-04 23:06:23 +08:00
utilities fix a few compile warnings 2014-09-04 23:06:23 +08:00
.arcconfig
.clang-format
.gitignore Changes to support unity build: 2014-08-11 13:22:47 -04:00
.travis.yml Turn off travis notifications 2014-05-14 16:08:02 -07:00
CONTRIBUTING.md facebook accounts are not required for CLA signers 2014-07-08 05:57:54 -04:00
HISTORY.md update HISTORY.md 2014-09-03 17:03:30 -07:00
INSTALL.md specify the command to install build_tools/mac-install-gflags.sh file in doc 2014-06-17 17:03:21 -05:00
LICENSE
Makefile Don't do memtable lookup in db_impl_readonly if memtables are empty while opening db. 2014-08-26 17:19:03 -07:00
PATENTS
README.md Update README.md 2014-06-23 15:58:54 -07:00
ROCKSDB_LITE.md

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 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/