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Andrew Kryczka 5a5c0492db ldb: set `total_order_seek` for scans (#5066)
Summary:
Without `total_order_seek=true`, using this command with `prefix_extractor` set skips over lots of keys.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5066

Differential Revision: D14425967

Pulled By: sagar0

fbshipit-source-id: f6f142733258d92604f920615be9266e1fe797f8
2019-03-12 13:10:39 -07:00
buckifier Add load statements to rocksdb TARGETS files 2019-02-13 14:08:21 -08:00
build_tools Use `fallocate` even if hole-punching unsupported (#5023) 2019-03-04 15:43:17 -08:00
cache Introduce an enum for flag types in LRUHandle (#5024) 2019-02-28 11:54:24 -08:00
cmake Make FindZLIB consistent with official definitions (#4823) 2019-01-02 12:49:57 -08:00
coverage Remove unused imports, from python scripts. (#4057) 2018-06-26 12:43:04 -07:00
db Revert "Remove PlainTable's feature store_index_in_file (#4914)" (#5034) 2019-03-01 15:45:45 -08:00
docs Blog post for format_version=4 2019-03-08 16:49:30 -08:00
env Use `fallocate` even if hole-punching unsupported (#5023) 2019-03-04 15:43:17 -08:00
examples Pin top-level index on partitioned index/filter blocks (#4037) 2018-06-22 15:27:46 -07:00
hdfs Update all unique/shared_ptr instances to be qualified with namespace std (#4638) 2018-11-09 11:19:58 -08:00
include/rocksdb Revert "Remove PlainTable's feature store_index_in_file (#4914)" (#5034) 2019-03-01 15:45:45 -08:00
java Move some RocksObject into try-with-resources in Test (#5037) 2019-03-04 14:56:15 -08:00
memtable Apply modernize-use-override (2nd iteration) 2019-02-14 14:41:36 -08:00
monitoring Make statistics's stats_level change thread-safe (#5030) 2019-03-01 10:42:09 -08:00
options Revert "Remove PlainTable's feature store_index_in_file (#4914)" (#5034) 2019-03-01 15:45:45 -08:00
port Fix build failures due to missing JEMALLOC_CXX_THROW macro (#5053) 2019-03-08 17:06:13 -08:00
table Print data block index options to info log (#5039) 2019-03-08 11:18:45 -08:00
third-party Support pragma once in all header files and cleanup some warnings (#4339) 2018-09-05 18:13:31 -07:00
tools ldb: set `total_order_seek` for scans (#5066) 2019-03-12 13:10:39 -07:00
util Make statistics's stats_level change thread-safe (#5030) 2019-03-01 10:42:09 -08:00
utilities Fix tsan compliant on AddPreparedBeforeMax (#5052) 2019-03-08 09:39:00 -08:00
.clang-format
.gitignore RocksDB Trace Analyzer (#4091) 2018-08-13 11:44:02 -07:00
.lgtm.yml Create lgtm.yml for LGTM.com C/C++ analysis (#4058) 2018-06-26 12:43:04 -07:00
.travis.yml Fix printf formatting on MacOS (#4533) 2018-10-19 14:46:09 -07:00
AUTHORS Update RocksDB Authors File 2017-10-18 14:42:10 -07:00
CMakeLists.txt Use `fallocate` even if hole-punching unsupported (#5023) 2019-03-04 15:43:17 -08:00
CODE_OF_CONDUCT.md Add Code of Conduct 2017-12-05 18:42:35 -08:00
CONTRIBUTING.md Add Code of Conduct 2017-12-05 18:42:35 -08:00
COPYING Add GPLv2 as an alternative license. 2017-04-27 18:06:12 -07:00
DEFAULT_OPTIONS_HISTORY.md options.delayed_write_rate use the rate of rate_limiter by default. 2017-05-24 09:58:24 -07:00
DUMP_FORMAT.md First version of rocksdb_dump and rocksdb_undump. 2015-06-19 16:24:36 -07:00
HISTORY.md Fix build failures due to missing JEMALLOC_CXX_THROW macro (#5053) 2019-03-08 17:06:13 -08:00
INSTALL.md Update the version of the dependencies used by the RocksJava static build (#4761) 2018-12-18 20:25:43 -08:00
LANGUAGE-BINDINGS.md Added PingCaps Rust RocksDB and ObjectiveRocks (#4065) 2018-06-27 15:43:21 -07:00
LICENSE.Apache Change RocksDB License 2017-07-15 16:11:23 -07:00
LICENSE.leveldb Add back the LevelDB license file 2017-07-16 18:42:18 -07:00
Makefile Add missing functionality to RocksJava (#4833) 2019-02-22 14:46:46 -08:00
README.md Create lgtm.yml for LGTM.com C/C++ analysis (#4058) 2018-06-26 12:43:04 -07:00
ROCKSDB_LITE.md Fix some typos in comments and docs. 2018-03-08 10:27:25 -08:00
TARGETS add GetStatsHistory to retrieve stats snapshots (#4748) 2019-02-20 15:52:54 -08:00
USERS.md Adding IOTA Foundation to USERS.MD (#4436) 2018-10-02 10:03:46 -07:00
Vagrantfile Adding CentOS 7 Vagrantfile & build script 2018-02-26 15:27:17 -08:00
WINDOWS_PORT.md Add GCC 8 to Travis (#3433) 2018-07-13 10:58:06 -07:00
appveyor.yml Add RocksJava build to AppVeyor 2019-01-03 10:44:44 -08:00
defs.bzl [sync fix] Add defs.bzl 2019-02-28 11:35:30 -08:00
issue_template.md Add a template for issues 2017-09-29 11:41:28 -07:00
src.mk Add missing functionality to RocksJava (#4833) 2019-02-22 14:46:46 -08:00
thirdparty.inc Provide a way to override windows memory allocator with jemalloc for ZSTD 2018-06-04 12:12:48 -07:00

README.md

RocksDB: A Persistent Key-Value Store for Flash and RAM Storage

Linux/Mac Build Status Windows Build status PPC64le 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/

License

RocksDB is dual-licensed under both the GPLv2 (found in the COPYING file in the root directory) and Apache 2.0 License (found in the LICENSE.Apache file in the root directory). You may select, at your option, one of the above-listed licenses.