nodejs读取memcache示例分享

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）;