DeNA / HandlerSocket-Plugin-for-MySQL

HandlerSocket is a NoSQL plugin for MySQL, working as a daemon inside the mysqld process, to accept tcp connections, and execute requests from clients. HandlerSocket does not support SQL queries; instead it supports simple CRUD operations on tables.
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HandlerSocket plugin for MySQL

Copyright (c) 2010 DeNA Co.,Ltd. All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright
  notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
  notice, this list of conditions and the following disclaimer in the
  documentation and/or other materials provided with the distribution.
* Neither the name of DeNA Co.,Ltd. nor the names of its contributors
  may be used to endorse or promote products derived from this software
  without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY DeNA Co.,Ltd. "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL DeNA Co.,Ltd. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.


About HandlerSocket

HandlerSocket is a NoSQL plugin for MySQL. It works as a daemon inside the mysqld process, accept tcp connections, and execute requests from clients. HandlerSocket does not support SQL queries. Instead, it supports simple CRUD operations on tables.

Because of the following reasons, HandlerSocket is much faster than the mysqld/libmysql pair in some circumstances:

The current version of HandlerSocket only works with GNU/Linux. The source archive of HandlerSocket includes a C++ and a Perl client libraries. Here is a list of client libraries for other languages:

The home of HandlerSocket is here: https://github.com/DeNA/HandlerSocket-Plugin-for-MySQL

More documents are available in docs-en/ and docs-ja/ directories.