登录  /  注册
首页 > web前端 > js教程 > 正文

nodejs读取memcache示例分享_javascript技巧

php中文网
发布: 2016-05-16 17:05:42
原创
868人浏览过

复制代码 代码如下:

var memcache = require('memcache')
    , http = require('http')
    , url = require('url')
    , qs = require('querystring')
    , memsettings = { port: 2000, host: '10.6.0.6' }
    , httpsettings = { port: 3000 }
    , cacheObject = {}
    , httpserver
    , client
    , requestHandler;

client = new memcache.Client(memsettings.port, memsettings.host);
//...
client.on('connect', function(){
    client.connected = true;
});

client.on('close', function(){
    // no arguments - connection has been closed
    client.connected = false;
});

function getData(key, wrapper, res){
    client.get(key, function(error, result){
            // all of the callbacks have two arguments.
            // 'result' may contain things which aren't great, but
            // aren't really errors, like 'NOT_STORED'
            if(!error){
                if(result){
                    cacheObject[key] = result;
                    res.write( wrapper + '(' + result + ')');
                } else {
                    res.write('no data');
                }
                res.end();
            }
     });
    /*if(cacheObject[key]){
        response.write(cacheObject[key]);
        response.end();
    } else  {
        client.get(key, function(error, result){

            // all of the callbacks have two arguments.
            // 'result' may contain things which aren't great, but
            // aren't really errors, like 'NOT_STORED'
            if(!error){
                cacheObject[key] = result;
                cacheObject[key]['timeoutId'] = setTimeout(function(){
                    client.get(key, function(error, result){
                        if(!error){
                            cacheObject[key] = result;
                        }
                    });
                });
                response.write(result);
                response.end();
            }
        });
    }*/
}

httpserver = http.createServer(function(req, res){
    var urlObj, queryObj;
    urlObj = url.parse(req.url);
    res.writeHead(200, {"Content-Type":"text/javascript; charset=utf-8"});
    queryObj = qs.parse(urlObj.query);
    path = queryObj.pathname;
    if(queryObj.gid){
        getData(queryObj.gid, queryObj.callback||'callback', res);
    } else {
        res.write('no input');
        res.end();
    }
    /*
    switch(urlObj.pathname){
        case '/pai':
            res.write(urlObj.pathname);
        break;
        case '/qiang':
            res.write(urlObj.pathname);
        break;
        default:
            res.write('default');
        break;
    }
    res.end();
    */
});

client.connect();
httpserver.listen(httpsettings.port);
console.log('http server listening on ' + httpsettings.port);
智能AI问答
PHP中文网智能助手能迅速回答你的编程问题,提供实时的代码和解决方案,帮助你解决各种难题。不仅如此,它还能提供编程资源和学习指导,帮助你快速提升编程技能。无论你是初学者还是专业人士,AI智能助手都能成为你的可靠助手,助力你在编程领域取得更大的成就。
来源:php中文网
本文内容由网友自发贡献,版权归原作者所有,本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容,请联系admin@php.cn
最新问题
热门教程
更多>
最新下载
更多>
网站特效
网站源码
网站素材
前端模板
关于我们 免责申明 意见反馈 讲师合作 广告合作 最新更新
php中文网:公益在线php培训,帮助PHP学习者快速成长!
关注服务号 技术交流群
PHP中文网订阅号
每天精选资源文章推送
PHP中文网APP
随时随地碎片化学习
PHP中文网抖音号
发现有趣的

Copyright 2014-2024 https://www.php.cn/ All Rights Reserved | php.cn | 湘ICP备2023035733号