rocksdb

fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph

Jim Meyering a42324e370 build: do not relink every single binary just for a timestamp Summary: Prior to this change, "make check" would always waste a lot of time relinking 60+ binaries. With this change, it does that only when the generated file, util/build_version.cc, changes, and that happens only when the date changes or when the current git SHA changes. This change makes some other improvements: before, there was no rule to build a deleted util/build_version.cc. If it was somehow removed, any attempt to link a program would fail. There is no longer any need for the separate file, build_tools/build_detect_version. Its functionality is now in the Makefile. * Makefile (DEPFILES): Don't filter-out util/build_version.cc. No need, and besides, removing that dependency was wrong. (date, git_sha, gen_build_version): New helper variables. (util/build_version.cc): New rule, to create this file and update it only if it would contain new information. * build_tools/build_detect_platform: Remove file. * db/db_impl.cc: Now, print only date (not the time). * util/build_version.h (rocksdb_build_compile_time): Remove declaration. No longer used. Test Plan: - Run "make check" twice, and note that the second time no linking is performed. - Remove util/build_version.cc and ensure that any "make" command regenerates it before doing anything else. - Run this: strings librocksdb.a\|grep _build_. That prints output including the following: rocksdb_build_git_date:2015-02-19 rocksdb_build_git_sha:2.8.fb-1792-g3cb6cc0 Reviewers: ljin, sdong, igor Reviewed By: igor Subscribers: dhruba Differential Revision: https://reviews.facebook.net/D33591		10 years ago
build_tools	build: do not relink every single binary just for a timestamp	10 years ago
coverage	Fix coverage script	10 years ago
db	build: do not relink every single binary just for a timestamp	10 years ago
doc	Remove seek compaction	11 years ago
examples	Fix formatting	10 years ago
hdfs	Replace exception by abort() in dummy HdfsEnv implementation.	10 years ago
include	Add rocksdb.num-live-versions: number of live versions	10 years ago
java	[RocksJava] FlushOptions Correction	10 years ago
linters	Revert "Fbson to Json"	10 years ago
port	Fix stack trace on mac	10 years ago
table	Remember whole key/prefix filtering on/off in SST file	10 years ago
third-party/rapidjson	Revert "Fbson to Json"	10 years ago
tools	Added simple monitoring script to monitor overusage of memory in db_bench	10 years ago
util	build: do not relink every single binary just for a timestamp	10 years ago
utilities	Revert "Fbson to Json"	10 years ago
.arcconfig	build: abbreviate AR command, too	10 years ago
.clang-format	A script that automatically reformat affected lines	11 years ago
.gitignore	Merge pull request #483 from adamretter/restructure-java-build	10 years ago
.travis.yml	Don't parallelize the build in travis	10 years ago
AUTHORS	Add AUTHORS file. Fix #203	10 years ago
CONTRIBUTING.md	facebook accounts are not required for CLA signers	11 years ago
HISTORY.md	Remember whole key/prefix filtering on/off in SST file	10 years ago
INSTALL.md	Optimize default compile to compilation platform by default	10 years ago
LICENSE	Fix copyright year	11 years ago
Makefile	build: do not relink every single binary just for a timestamp	10 years ago
PATENTS	Fix the patent format	11 years ago
README.md	Replaced "built on on earlier work" by "built on earlier work" in README.md	10 years ago
ROCKSDB_LITE.md	RocksDBLite	11 years ago
Vagrantfile	Package generation for Ubuntu and CentOS	10 years ago

README.md

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

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/