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A node.js TCP proxy [for mysql]
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README.md

node-tcp-proxy - v0.1.0

Features

  • Reverse proxies incoming tcp streams
  • Monitors backend hosts for availability, balances between them
  • Minimal request overhead and latency
  • Written entirely in Javascript
  • Easy to use API

When to use node-tcp-proxy

Let's suppose you were running multiple http application servers, and all of these app servers need to connect to some sort of database. Well unfortunately(fortunately?) you're lazy like me and don't want to throw up another haproxy instance. So instead you setup node-tcp-proxy on each of the app servers to proxy database requests to multiple HA configured backends. The app server connects to its locally hosted node-tcp-proxy which watches the backend servers for availability and brokers the connection to a randomly chosen, available backend.

Installing npm (node package manager)

curl http://npmjs.org/install.sh | sh

Installing node-tcp-proxy

If you don't plan on using the provided cli client, this is all you need: npm install tcp-proxy

If you intend on using the provided cli client, then have to do the following: `npm install -g tcp-proxy

Then in the root of your application run: npm link

Using node-tcp-proxy

There are several ways to use node-tcp-proxy; the library is designed to be flexible so that it can be used by itself, or in conjunction with other node.js libraries / tools.

See the examples for working sample code.

As a service

I have provided a functional LSB compliant init.d script that was tested on ubuntu 10.04 and 10.10. To use this script I highly recommend the use of forever.

npm -g install forever

Don't forget to copy the init script to /etc/init.d/ and make sure it's executable

Using node-tcp-proxy from the command line

When you install this package with npm, a node-tcp-proxy binary will become available to you. Using this binary is easy with some simple options:

Invoke it like so:

node-tcp-proxy --help

Remember, if you want to use this command globally, install the package globally

Why doesn't node-tcp-proxy have more advanced features like x, y, or z?

If you have a suggestion for a feature currently not supported, feel free to open a support issue. node-tcp-proxy is designed to just proxy tcp requests from one server to another.

License

(The MIT License)

Copyright (c) 2010 Charlie Robbins, Mikeal Rogers, Fedor Indutny, & Marak Squires

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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