bonnefoa / elevator

Elevator is an open source, on-disk key-value store. Provides high-performance bulk read-write operations over very large datasets while exposing a simple and efficient API.

Elevator

Key-Value store written in Python and based on levelDB, allows high performance on-disk bulk read/write.

Allows async, multithreaded and/or remote access to a multi-leveldb backend.

Relying on the zeromq network library and msgpack serialization format, it is made to be portable between languages and platforms.

See Documentation for more details

Elevator is an open source software under the MIT license. Any hackers are welcome to supply ideas, features requests, patches, Pull requests and so on. Documentation's development page contains comprehensive info on contributing, repository layout, our release strategy, and more.

Dependencies

• zmq-3.X
• leveldb
• pyzmq (built with zmq-3.X)
• plyvel

Debian repository

The deb.oleiade.com debian repository exposes libzmq3, libzmq3-dev, libleveldb1 and libleveldb1-dev packages in order to ease your dependencies management. Just add the following line to your /etc/apt/sources.list:

deb http://deb.oleiade.com/debian oneiric main

Puppet

In order to ease your Elevator deployment, a puppet module has been developed. Note that it will automatically add the debian repository to your nodes.

Installation

Just:

pip install Elevator

Usage

When elevator is installed, you can then launch the server using the elevator executable. Note that a --daemon option is disposable, and allows you to run elevator server as a daemon, storing it's pid in .pid file in /tmp.

See config/elevator.conf for an example of Elevator configuration.

Example:

$ elevator --help

usage: elevator [-hdctbpwv]

Elevator command line manager

optional arguments:
  -h, --help            Show this help message and exit
  -d, --daemon          Launch elevator as a daemon
  -c, --config          Elevator config file path
  -t, --transport       Transport layer: tcp or ipc
  -b, --bind            Address the server will be binded to
  -p, --port            Port the server should listen on
  -w, --workers         Workers to be spawned count
  -v, --log-level       Log level, see python logging documentation
                        for more information :
                        http://docs.python.org/library/logging.html#logger-objects

Clients

Python: py-elevator

Go: go-elevator (Early early, so early version)

Clojure : Coming soon

C : Coming soon

Thanks

Thanks to srinikom for its leveldb-server which was a very good base to start from.