rocksdb/utilities/redis/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.
Completed the implementation and test cases for Redis API. Summary: Completed the implementation for the Redis API for Lists. The Redis API uses rocksdb as a backend to persistently store maps from key->list. It supports basic operations for appending, inserting, pushing, popping, and accessing a list, given its key. Test Plan: - Compile with: make redis_test - Test with: ./redis_test - Run all unit tests (for all rocksdb) with: make all check - To use an interactive REDIS client use: ./redis_test -m - To clean the database before use: ./redis_test -m -d Reviewers: haobo, dhruba, zshao Reviewed By: haobo CC: leveldb Differential Revision: https://reviews.facebook.net/D10833 12 years ago			`This folder defines a REDIS-style interface for Rocksdb.`
Change namespace from leveldb to rocksdb Summary: Change namespace from leveldb to rocksdb. This allows a single application to link in open-source leveldb code as well as rocksdb code into the same process. Test Plan: compile rocksdb Reviewers: emayanke Reviewed By: emayanke CC: leveldb Differential Revision: https://reviews.facebook.net/D13287 11 years ago			`Right now it is written as a simple tag-on in the rocksdb::RedisLists class.`
Completed the implementation and test cases for Redis API. Summary: Completed the implementation for the Redis API for Lists. The Redis API uses rocksdb as a backend to persistently store maps from key->list. It supports basic operations for appending, inserting, pushing, popping, and accessing a list, given its key. Test Plan: - Compile with: make redis_test - Test with: ./redis_test - Run all unit tests (for all rocksdb) with: make all check - To use an interactive REDIS client use: ./redis_test -m - To clean the database before use: ./redis_test -m -d Reviewers: haobo, dhruba, zshao Reviewed By: haobo CC: leveldb Differential Revision: https://reviews.facebook.net/D10833 12 years ago			`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.`