redis blog

IBM 看到的blog如何 存储在redis种

 var ArticleHelper = function () {
     this.ArticleIDSet = "AIDSet"; // 存放文章 ID 的集合 this.ArticleIDPrefix = "Article"; // 文章 KEY 前缀
     this.CommentIDPrefix = "Comment"; // 评论 KEY 前缀
};

    ArticleHelper.prototype.getArticleIDs = function(){
        var that = this;
        var promise = ArticleMySQLHelper.getIDs().then(function (artis) {
            if(artis.length ==  ) {
                return null;
           }
           var _ = [];
           artis.forEach(
               function(arti) {
                   _.push(redis.zaddAsync(that.ArticleIDSet, [, arti.ID]));
               }
           );
           return Q.all(_);
        });
        return promise;
    };
//取数据
ArticleHelper.prototype.getArticle = function(id){
        var that = this;
        var promise = redis.hgetallAsync(that.ArticleIDPrefix+id).then(function(res) {
            if (res == null) {
            return ArticleMySQLHelper.getOne(id).then(function(article) {
                    return redis.hmsetAsync(that.ArticleIDPrefix+id, article). then(function(res) {
                        return   Q.resolve(article);
                    });
                });
        } else {
                return Q.resolve(res);
        }
    });
    return promise;
}

//获取评论
ArticleHelper.prototype.getComment = function(id) {
    var that = this;
    var promise = redis.zrangeAsync(that.CommentIDPrefix+id, [, -]).then(function(res) {
        if (res == null) {
            var p = ArticleMySQLHelper.getComments(id).then(function(cmmts) {
                var _ = []; cmmts.forEach(function(cmmt) {
                     _.push(redis.zaddAsync(that.CommentIDPrefix+id,[cmmt.index, cmmt.body])); });
                      return Q.all(_);
                    });
                    return p;
        } else {
             return  Q.resolve(res);
        }
    })
     return promise;
    }
//添加评论
ArticleHelper.prototype.addComment = function(id, comment) {
    var that = this;
    var promise = ArticleMySQLHelper.saveComment(id, comment).then(function(res){
        return redis.expireAsync(that.ArticleIDPrefix+id, []); });
        return promise;
    };

//评论过期
ArticleHelper.prototype.getArticleExpire = function(id) {
    var that = this;
    var promise = redis.hgetallAsync(that.ArticleIDPrefix+id).then(function(res) {
        if (res == null) {
            return ArticleMySQLHelper.getOne(id).then(function(article) {
                return redis.hmsetAsync(that.ArticleIDPrefix+id, article).then(function(res) {
                    return  redis.expireAsync(that.ArticleIDPrefix+id, *);
                }).then(function(){ return Q.resolve(article);
                });
             });
        } else {
             return Q.resolve(res);
        }
    });
     return promise;
    }
####这是用到的redis 命令
zadd
zrange
hgetall
hget
hmset
hmget
expire
https://www.ibm.com/developerworks/cn/opensource/os-cn-nodejs-redis/index.html
https://redis.io/commands/hmset