rocksdb

History

Andrew Gallagher 897fe6a4a3 rocksdb: put `#pragma once` before `#ifdef` Summary: Work around upstream bug with modules: https://bugs.llvm.org/show_bug.cgi?id=39184. Reviewed By: yiwu-arbug Differential Revision: D10209569 fbshipit-source-id: 696853a02a3869e9c33d0e61168ad4b0436fa3c0		2018-10-04 17:10:21 -07:00
..
README	Change namespace from leveldb to rocksdb	2013-10-04 11:59:26 -07:00
redis_list_exception.h	rocksdb: put `#pragma once` before `#ifdef`	2018-10-04 17:10:21 -07:00
redis_list_iterator.h	Use nullptr instead of NULL / 0 more consistently.	2018-03-07 12:42:12 -08:00
redis_lists_test.cc	Per-thread unique test db names (#4135 )	2018-07-13 17:27:39 -07:00
redis_lists.cc	Use nullptr instead of NULL / 0 more consistently.	2018-03-07 12:42:12 -08:00
redis_lists.h	RocksDBLite	2014-04-15 13:39:26 -07:00

README

This folder defines a REDIS-style interface for Rocksdb.
Right now it is written as a simple tag-on in the rocksdb::RedisLists class.
It implements Redis Lists, and supports only the "non-blocking operations".

Internally, the set of lists are stored in a rocksdb database, mapping keys to
values. Each "value" is the list itself, storing a sequence of "elements".
Each element is stored as a 32-bit-integer, followed by a sequence of bytes.
The 32-bit-integer represents the length of the element (that is, the number
of bytes that follow). And then that many bytes follow.


NOTE: This README file may be old. See the actual redis_lists.cc file for
definitive details on the implementation. There should be a header at the top
of that file, explaining a bit of the implementation details.