A library that provides an embeddable, persistent key-value store for fast storage.
Go to file
Haobo Xu e94eea4527 [RocksDB] [Performance Branch] Minor fix, Remove string resize from WriteBatch::Clear
Summary: tmp_batch_ will get re-allocated for every merged write batch because of the existing resize in WriteBatch::Clear. Note that in DBImpl::BuildBatchGroup, we have a hard coded upper limit of batch size 1<<20 = 1MB already.

Test Plan: make check

Reviewers: dhruba, sdong

CC: leveldb

Differential Revision: https://reviews.facebook.net/D14787
2013-12-20 16:29:05 -08:00
build_tools Updating regression test based on master's version 2013-12-11 13:52:54 -08:00
coverage Fix the gcov/lcov related issues 2013-08-22 17:01:06 -07:00
db [RocksDB] [Performance Branch] Minor fix, Remove string resize from WriteBatch::Clear 2013-12-20 16:29:05 -08:00
doc Fix typo. 2013-11-28 03:57:16 +09:00
hdfs Add appropriate LICENSE and Copyright message. 2013-10-16 17:48:41 -07:00
helpers/memenv Change Function names from Compaction->Flush When they really mean Flush 2013-10-14 15:12:15 -07:00
include [RocksDB] [Performance Branch] Some Changes to PlainTable format 2013-12-20 12:08:35 -08:00
linters/src fixing linters. 2012-12-14 14:05:27 -08:00
port Fix BZip constants 2013-11-18 20:33:34 -08:00
table [RocksDB] [Performance Branch] Some Changes to PlainTable format 2013-12-20 12:08:35 -08:00
tools Killing Transform Rep 2013-12-03 12:42:15 -08:00
util [RocksDB] [Performance Branch] Some Changes to PlainTable format 2013-12-20 12:08:35 -08:00
utilities Make GetDbIdentity pure virtual and also implement it for StackableDB, DBWithTTL 2013-12-05 12:02:31 -08:00
.arcconfig Enable linting in arc. 2013-02-01 11:34:25 -08:00
.gitignore Remove invalid items in .gitignore 2013-11-05 21:04:22 -08:00
CONTRIBUTING.md Reformat CONTRIBUTING.md with less than 80 characters. 2013-11-16 22:51:09 -08:00
INSTALL.md Cleaning up INSTALL.md -- there were two occurrences of gflags 2013-12-02 06:48:23 -08:00
LICENSE Add appropriate LICENSE and Copyright message. 2013-10-16 17:48:41 -07:00
Makefile [RocksDB] [Performance Branch] Added dynamic bloom, to be used for memable non-existing key filtering 2013-12-11 00:15:14 -08:00
PATENTS Fix the patent format 2013-10-16 15:37:32 -07:00
README Removing reference to doc/impl.html 2013-12-02 11:51:20 -08:00
README.fb Update the latest rocksdb version 2013-10-22 14:49:44 -07:00

rocksdb: A persistent key-value store for flash storage
Authors: * The Facebook Database Engineering Team
         * Build 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.

The core of this code has been derived from open-source leveldb.

The code under this directory implements a system for maintaining a
persistent key/value store.

See doc/index.html and github wiki (https://github.com/facebook/rocksdb/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.

Guide to header files:

include/rocksdb/db.h
    Main interface to the DB: Start here

include/rocksdb/options.h
    Control over the behavior of an entire database, and also
    control over the behavior of individual reads and writes.

include/rocksdb/comparator.h
    Abstraction for user-specified comparison function.  If you want
    just bytewise comparison of keys, you can use the default comparator,
    but clients can write their own comparator implementations if they
    want custom ordering (e.g. to handle different character
    encodings, etc.)

include/rocksdb/iterator.h
    Interface for iterating over data. You can get an iterator
    from a DB object.

include/rocksdb/write_batch.h
    Interface for atomically applying multiple updates to a database.

include/rocksdb/slice.h
    A simple module for maintaining a pointer and a length into some
    other byte array.

include/rocksdb/status.h
    Status is returned from many of the public interfaces and is used
    to report success and various kinds of errors.

include/rocksdb/env.h
    Abstraction of the OS environment.  A posix implementation of
    this interface is in util/env_posix.cc

include/rocksdb/table_builder.h
    Lower-level modules that most clients probably won't use directly

include/rocksdb/cache.h
    An API for the block cache.

include/rocksdb/compaction_filter.h
    An API for a application filter invoked on every compaction.

include/rocksdb/filter_policy.h
    An API for configuring a bloom filter.

include/rocksdb/memtablerep.h
    An API for implementing a memtable.

include/rocksdb/statistics.h
    An API to retrieve various database statistics.

include/rocksdb/transaction_log.h
    An API to retrieve transaction logs from a database.