A library that provides an embeddable, persistent key-value store for fast storage.
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Igor Canadi 3992aec8fa Support for column families in TTL DB
Summary:
This will enable people using TTL DB to do so with multiple column families. They can also specify different TTLs for each one.

TODO: Implement CreateColumnFamily() in TTL world.

Test Plan: Added a very simple sanity test.

Reviewers: dhruba, haobo, ljin, sdong, yhchiang

Reviewed By: haobo

CC: leveldb, alberts

Differential Revision: https://reviews.facebook.net/D17859
2014-04-22 11:27:33 -07:00
build_tools Rename "benchmark" back to "bench". 2014-04-21 13:12:15 -07:00
coverage Disable the html-based coverage report by default 2014-02-06 12:58:13 -08:00
db Support for column families in TTL DB 2014-04-22 11:27:33 -07:00
doc doc: table_stats_collectors -> table_properties_collectors. 2014-02-07 12:19:25 -08:00
hdfs Env to add a function to allow users to query waiting queue length 2014-03-11 10:19:02 -07:00
helpers/memenv Expose in memory Env to the world 2014-04-14 12:28:15 -07:00
include Support for column families in TTL DB 2014-04-22 11:27:33 -07:00
java [Java] Add Java binding and Java test for ReadOptions. 2014-04-21 15:52:59 -07:00
linters allow lambda function syntax in cpplint 2014-02-20 12:47:05 -08:00
port db_bench cleanup 2014-04-08 11:21:09 -07:00
table Fix SIGFAULT when running sst_dump on v2.6 db 2014-04-21 17:49:47 -07:00
tools Fix SIGFAULT when running sst_dump on v2.6 db 2014-04-21 17:49:47 -07:00
util Flush before Fsync()/Sync() 2014-04-21 17:45:04 -07:00
utilities Support for column families in TTL DB 2014-04-22 11:27:33 -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 Rename "benchmark" back to "bench". 2014-04-21 13:12:15 -07:00
CONTRIBUTING.md New CLA form 2014-04-22 09:12:19 -07:00
HISTORY.md Added period 2014-04-18 09:33:27 -07:00
INSTALL.md Make RocksDB compile for iOS 2014-04-04 13:11:44 -07:00
LICENSE Fix copyright year 2014-03-12 12:06:58 -07:00
Makefile Single-threaded asan_crash_test 2014-04-21 15:42:28 -07:00
PATENTS Fix the patent format 2013-10-16 15:37:32 -07:00
README Add a pointer to the engineering design discussion forum. 2013-12-23 12:19:18 -08:00
README.fb update the latest version in README.fb to 2.7 2013-12-30 16:16:24 -08:00
ROCKSDB_LITE.md RocksDBLite 2014-04-15 13:39:26 -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.

Design discussions are conducted in https://www.facebook.com/groups/rocksdb.dev/