A library that provides an embeddable, persistent key-value store for fast storage.
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agiardullo 711465ccec API to fetch from both a WriteBatchWithIndex and the db
Summary:
Added a couple functions to WriteBatchWithIndex to make it easier to query the value of a key including reading pending writes from a batch.  (This is needed for transactions).

I created write_batch_with_index_internal.h to use to store an internal-only helper function since there wasn't a good place in the existing class hierarchy to store this function (and it didn't seem right to stick this function inside WriteBatchInternal::Rep).

Since I needed to access the WriteBatchEntryComparator, I moved some helper classes from write_batch_with_index.cc into write_batch_with_index_internal.h/.cc.  WriteBatchIndexEntry, ReadableWriteBatch, and WriteBatchEntryComparator are all unchanged (just moved to a different file(s)).

Test Plan: Added new unit tests.

Reviewers: rven, yhchiang, sdong, igor

Reviewed By: igor

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D38037
2015-05-11 14:51:51 -07:00
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coverage Fix coverage script 2014-11-03 14:53:00 -08:00
db API to fetch from both a WriteBatchWithIndex and the db 2015-05-11 14:51:51 -07:00
doc Remove seek compaction 2014-06-20 10:23:02 +02:00
examples Fix formatting 2015-02-09 09:53:30 -08:00
hdfs Remove unused parameter in CancelAllBackgroundWork 2015-03-16 21:07:54 -07:00
include API to fetch from both a WriteBatchWithIndex and the db 2015-05-11 14:51:51 -07:00
java Bugfix remove deprecated option use which was removed in previous commit 019ecd1932 2015-04-30 23:16:04 +01:00
port Build for CYGWIN 2015-04-23 21:33:44 -07:00
table fix typos 2015-04-25 18:14:27 +09:00
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tools Add Size-GB column to benchmark reports 2015-05-02 07:46:12 -07:00
util Allow GetThreadList() to report basic compaction operation properties. 2015-05-06 22:51:06 -07:00
utilities API to fetch from both a WriteBatchWithIndex and the db 2015-05-11 14:51:51 -07:00
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HISTORY.md Task 6532943: Rocksdb - SetCapacity() can dynamically change cache capacity if feasible 2015-04-24 14:12:58 -07:00
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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/