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lock server written in node.js

locker - lock server written in node.js

This is lock server for system that need to share and lock common resources across servers with sub-second precision.

It allows to set wait timeout for lock and max execution time to limit your desire for eternal locking.

Client for node.js is completely async.


var Locker = require("locker"),
    locker = new Locker(4545, "");
locker.on("reset", function() {
    console.log("Reset happened (is server running?)");
locker.on("error", function(error) {
    console.log("Catched error:", error);
//            name    wait  max   callback 
locker.locked("five", 2000, 3000, function(error, callback) {
    if (error) {
        // lock failed 
    // do whatever you want with your shared resource 
    callback(undefined, {well: "done"});

First create a dir for locker:

mkdir locker
cd locker
mkdir node_modules
npm install locker-server

Then create main server file (look at example/server.js) and save it as server.js:

(function() {
    var Locker = require("../index"),
        locker = new Locker();

Run it after all:

node server.js