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Yueh-Hsuan Chiang 48da7a9cad Improve the comment for BYTES_READ in statistics.
Summary:
BYTES_READ only count the number of logical bytes read from
the DB::Get() function.  It neither includes all logical bytes read
nor indicates IO read bytes.

This patch improves the comment for BYTES_READ.

Test Plan: Only change comment.

Reviewers: sdong, rven, anthony, kradhakrishnan, IslamAbdelRahman, igor

Reviewed By: igor

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D40599
2015-06-24 15:00:51 -07:00
arcanist_util Integrate Jenkins with Phabricator 2015-04-07 11:56:29 -07:00
build_tools Remove -Wl,--no-as-needed flag when making shared_lib in OSX and IOS 2015-06-23 16:32:59 -07:00
coverage Fix coverage script 2014-11-03 14:53:00 -08:00
db Make table_properties_collector_test runnable in ROCKSDB_LITE 2015-06-24 01:38:53 -07:00
doc
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 Improve the comment for BYTES_READ in statistics. 2015-06-24 15:00:51 -07:00
java Use CompactRangeOptions for CompactRange 2015-06-17 14:36:14 -07:00
port Build for CYGWIN 2015-04-23 21:33:44 -07:00
table Implement a table-level row cache 2015-06-23 10:25:45 -07:00
third-party Update COMMIT.md 2015-03-30 17:48:16 -07:00
tools First version of rocksdb_dump and rocksdb_undump. 2015-06-19 16:24:36 -07:00
util Implement a table-level row cache 2015-06-23 10:25:45 -07:00
utilities Block redis_test in ROCKSDB_LITE 2015-06-24 01:44:21 -07:00
.arcconfig Integrate Jenkins with Phabricator 2015-04-07 11:56:29 -07:00
.clang-format
.gitignore First version of rocksdb_dump and rocksdb_undump. 2015-06-19 16:24:36 -07:00
.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
DUMP_FORMAT.md First version of rocksdb_dump and rocksdb_undump. 2015-06-19 16:24:36 -07:00
HISTORY.md Bottommost level compaction option 2015-06-23 13:32:40 -07:00
INSTALL.md Fix broken gflags link 2015-06-22 09:31:52 -07:00
LICENSE
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
USERS.md Add Yahoo's blog post about Sherpa to USERS.md 2015-06-09 12:55:58 -07:00
Vagrantfile RocksDB on FreeBSD support 2015-02-26 15:19:17 -08:00

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/