C# Memcached缓存用法实例详解

本文实例讲述了c#中memcached缓存的用法，分享给大家供大家参考。具体方法如下：

icachestrategy.cs文件如下：

public interface icachestrategy
{
        /// <summary>
        /// 添加数据到缓存
        /// </summary>
        /// <param name="objid">缓存名称</param>
        /// <param name="o">缓存内容</param>
        /// <param name="second">缓存时间(秒)</param>
        void add(string objid, object o, int second);

        /// <summary>
        /// 添加数据到缓存 (依赖其它缓存)
        /// </summary>
        /// <param name="objid">缓存名称</param>
        /// <param name="o">缓存内容</param>
        /// <param name="second">缓存时间(秒)</param>
        /// <param name="dependkey">依赖缓存名称数组</param>
        void addcachedepend(string objid, object o, int second, string[] dependkey);

        /// <summary>
        /// 添加数据到缓存 (依赖文件)
        /// </summary>
        /// <param name="objid">缓存名称</param>
        /// <param name="o">缓存内容</param>
        /// <param name="second">缓存时间(秒)</param>
        /// <param name="files">依赖缓存名称文件名数组</param>
        void addfiledepend(string objid, object o, int second, string[] files);

        /// <summary>
        /// 删除指定缓存
        /// </summary>
        /// <param name="objid"></param>
        void removecache(string objid);

        /// <summary>
        /// 删除所有缓存
        /// </summary>
        void removecacheall();

        /// <summary>
        /// 删除匹配到的缓存
        /// </summary>
        /// <param name="pattern"></param>
        /// <returns></returns>
        void removecacheregex(string pattern);

        /// <summary>
        /// 获取所有缓存键
        /// </summary>
        /// <returns></returns>
        ilist<string> getcachekeys();

        /// <summary>
        /// 搜索 匹配到的缓存
        /// </summary>
        /// <param name="pattern"></param>
        /// <returns></returns>
        ilist<string> searchcacheregex(string pattern);

        /// <summary>
        /// 获得缓存数据
        /// </summary>
        /// <param name="objid"></param>
        /// <returns></returns>
        object getcachedata(string objid);

        /// <summary>
        /// 判断此缓存是否有效
        /// </summary>
        /// <param name="objid"></param>
        /// <returns></returns>
        bool hascache(string objid);
}

memcachedstrategy.cs文件如下：

public class memcachedstrategy : icachestrategy
{
        #region icachestrategy 成员

        /// <summary>
        /// 添加数据到缓存
        /// </summary>
        /// <param name="objid">缓存名称</param>
        /// <param name="o">缓存内容</param>
        /// <param name="second">缓存时间(秒)</param>
        public void add(string objid, object o, int second)
        {
            if (second > 0)
            {
                memcachedmanager.cacheclient.set(objid, o, datetime.now.addseconds(second));
            }
            else
            {
                memcachedmanager.cacheclient.set(objid, o);
            }
        }

        #region 缓存依赖没有用到memcached
        /// <summary>
        /// 添加数据到缓存 (依赖其它缓存)
        /// </summary>
        /// <param name="objid">缓存名称</param>
        /// <param name="o">缓存内容</param>
        /// <param name="second">缓存时间(秒)</param>
        /// <param name="dependkey">依赖缓存名称数组</param>
        public void addcachedepend(string objid, object o, int second, string[] dependkey)
        {
            cachedependency dependencies = new cachedependency(null, dependkey, datetime.now);
            httpruntime.cache.insert(objid, o, dependencies, datetime.now.addseconds((double)second), cache.noslidingexpiration, cacheitempriority.default, null);
        }

        /// <summary>
        /// 添加数据到缓存 (依赖文件)
        /// </summary>
        /// <param name="objid">缓存名称</param>
        /// <param name="o">缓存内容</param>
        /// <param name="second">缓存时间(秒)</param>
        /// <param name="files">依赖缓存名称文件名数组</param>
        public void addfiledepend(string objid, object o, int second, string[] files)
        {
            cachedependency dependencies = new cachedependency(files, datetime.now);
            httpruntime.cache.insert(objid, o, dependencies, datetime.now.addseconds((double)second), cache.noslidingexpiration, cacheitempriority.default, null);
        }
        #endregion

        /// <summary>
        /// 删除指定缓存
        /// </summary>
        /// <param name="objid"></param>
        public void removecache(string objid)
        {
            if (memcachedmanager.cacheclient.keyexists(objid))
                memcachedmanager.cacheclient.delete(objid);
        }

        /// <summary>
        /// 删除所有缓存
        /// </summary>
        public void removecacheall()
        {
            memcachedmanager.cacheclient.flushall();
        }

        /// <summary>
        /// 删除匹配到的缓存
        /// </summary>
        /// <param name="pattern"></param>
        public void removecacheregex(string pattern)
        {
            ilist<string> list = searchcacheregex(pattern);
            foreach (var item in list)
            {
                memcachedmanager.cacheclient.delete(item);
            }
        }

        /// <summary>
        /// 获取所有缓存键
        /// </summary>
        /// <returns></returns>
        public ilist<string> getcachekeys()
        {
            return memcachedmanager.getallkeys();
        }

        /// <summary>
        /// 搜索 匹配到的缓存
        /// </summary>
        /// <param name="pattern"></param>
        /// <returns></returns>
        public ilist<string> searchcacheregex(string pattern)
        {
            list<string> l = new list<string>();
            ilist<string> cachekeys = memcachedmanager.getallkeys();
            foreach (var item in cachekeys)
            {
                if (regex.ismatch(item, pattern))
                {
                    l.add(item);
                }
            }
            return l.asreadonly();
        }

        /// <summary>
        /// 获得缓存数据
        /// </summary>
        /// <param name="objid"></param>
        /// <returns></returns>
        public object getcachedata(string objid)
        {
            return memcachedmanager.cacheclient.get(objid);
        }

        /// <summary>
        /// 判断此缓存是否有效
        /// </summary>
        /// <param name="objid"></param>
        /// <returns></returns>
        public bool hascache(string objid)
        {
            return memcachedmanager.cacheclient.keyexists(objid);
        }
        #endregion
}

希望本文所述对大家的c#程序设计有所帮助。