安装方法

安装redis方法请自行百度,

npm方法,安装nodejsredis模块

npm install redis  

实战

var redis = require("redis") ,
client = redis.createClient();

client.on("error", function (err) {
    console.log("Error " + err);
});
  
//链接redis_name表
client.on("connect", redis_name);
 
 
function runSample() {
     //使用set 对key 进行赋值,
      client.set("key", "Hello World", function (err, reply) {
           console.log(reply.toString());
      });
     //使用get 获取key的值
     client.get("key", function (err, reply) {
          console.log(reply.toString());
      });
}

同时可用expire来设置对象失效时间

//设置key的失效时间
client.expire('key', 3);  

下面是redis 实战完整代码,可供参考 

var redis = require("redis"),//召唤redis  
/* 
    连接redis数据库,createClient(port,host,options); 
    如果REDIS在本机,端口又是默认,直接写createClient()即可 
    redis.createClient() = redis.createClient(7788, '127.0.0.1', {}) 
*/  
client = redis.createClient(7788,'192.168.159.128',{});  
//如果需要验证,还要进行验证  
//client.auth(password, callback);  
  
// if you'd like to select database 3, instead of 0 (default), call  
// client.select(3, function() { /* ... */ });  
  
//错误监听?  
client.on("error", function (err) {  
    console.log("Error " + err);  
});  
  
client.set("string key", "string val", redis.print);//set "string key" "string val"  
/* 
    redis.print,回调函数,将redis的返回值显示出来。上一句执行结果,将返回“OK”  
*/  
client.hset("hash key", "hashtest 1", "some value", redis.print);  
client.hset(["hash key", "hashtest 2", "some other value"], redis.print);  
//遍历哈希表"hash key"  
client.hkeys("hash key", function (err, replies) {  
    console.log(replies.length + " replies:");  
    replies.forEach(function (reply, i) {  
        console.log("    " + i + ": " + reply);  
    });  
client.hget("hash key","hashtest 1",redis.print);      
  
/*两种都可以断掉与redis的连接, 
end()很粗暴,不管3721,一下子退出来了,上面那句获取哈希表"hash key"的某个元素值的表达式将没有结果返回 
而quit()则是先将语句处理完毕再干净地退出,斯文得很 
*/  
//client.end();  
client.quit();  
});  

  

 

posted on 2017-04-10 11:30  peiyu1988  阅读(434)  评论(0编辑  收藏  举报