redis lock

https://github.com/NextZeus/redisLockTest

redisLockTest
//redis.jsvar redis = require('redis');var redislock = require('redislock');var client = redis.createClient('127.0.0.1',6379);

exports.lockPlayer = function(key, callback){ var playerlock = redislock.createLock(client); playerlock.acquire(key+":lock", function (err) { callback(err,playerlock); });}

exports.releasePlayerLock = function(playerlock,callback){ playerlock.release(function (err) { callback(err); });}

//redisUtil.jsvar async = require('async');var redisUtil = require('../redis.js');var async = require('async');

//1var playlock ;async.waterfall([ function (cb) { redisUtil.lockPlayer('lock_xiaodong', function (err,data) { console.log('lock player error:',err);//null if(!err && !!data){ playlock = data; } cb(err); }); }, function (cb) { setTimeout(function () { redisUtil.lockPlayer('lock_xiaodong', function (err,data) { console.log('lock player error1:',err);//null if(!err && !!data){ playlock = data; } }); },10000); cb(); }, function (cb) { redisUtil.releasePlayerLock(playlock, function (err) { console.log('release player lock error:',err);//null cb(err); }); }], function (err) { if(!!err){ redisUtil.releasePlayerLock(playlock, function (err) { console.log('release player lock error1:',err); }); } else { console.log('lock and release lock success!!'); }});

//2async.waterfall([ function (cb) { redisUtil.lockPlayer('lock_xiaodong', function (err,data) { console.log('lock player error:',err); if(!err && !!data){ playlock = data; } cb(err); }); }, function (cb) { //error cannot acquire redisUtil.lockPlayer('lock_xiaodong', function (err,data) { console.log('lock player error1:',err); if(!err && !!data){ playlock = data; } cb(err); }); }, function (cb) { redisUtil.releasePlayerLock(playlock, function (err) { console.log('release player lock error:',err); cb(err); }); }], function (err) { if(!!err){ /* { [LockAcquisitionError: Could not acquire lock on "lock_xiaodong:lock"] name: 'LockAcquisitionError', message: 'Could not acquire lock on "lock_xiaodong:lock"' } */ redisUtil.releasePlayerLock(playlock, function (err) { console.log('release player lock error1:',err); }); } else { console.log('lock and release lock success!!'); }});