/// <summary>
/// 删除指定的key
/// </summary>
/// <param name="key"></param>
/// <returns></returns>
public static bool Delete(string key)
{
return(SuccessOrFail(() =>
{
if (RedisConfigHelper.GetEnableMemoryCache())
{
GetCache().Remove(key);
}
RedisHelper.Delete(key);
}));
}
/// <summary>
/// 缓存中是否存在
/// </summary>
/// <param name="key"></param>
/// <returns></returns>
public static bool Exist(string key)
{
if (RedisConfigHelper.GetEnableMemoryCache())
{
object cache;
if (GetCache().TryGetValue(key, out cache))
{
return(true);
}
}
return(RedisHelper.IsExist(key));
}
/// <summary>
/// 保存缓存
/// </summary>
/// <param name="key"></param>
/// <param name="value"></param>
/// <param name="expiresencends">缓存有效时间，单位秒</param>
/// <returns></returns>
public static bool Set(string key, object value, int expiresencends)
{
IsNullOrEmptyString(key);
return(SuccessOrFail(() =>
{
if (RedisConfigHelper.GetEnableMemoryCache())
{
GetCache().Set(key, value, TimeSpan.FromSeconds(expiresencends));
}
RedisHelper.Set(key, value, expiresencends);
}));
}
/// <summary>
/// 清空缓存
/// </summary>
/// <returns></returns>
public static bool Clear()
{
return(SuccessOrFail(() =>
{
List <string> keys = RedisHelper.GetAllKeys();
if (RedisConfigHelper.GetEnableMemoryCache())
{
foreach (var key in keys)
{
cache.Remove(key);
}
}
RedisHelper.DeleteAllKeys();
}));
}
/// <summary>
/// 保存缓存
/// </summary>
/// <param name="key"></param>
/// <param name="value"></param>
/// <param name="expireTime">失效时间</param>
/// <returns></returns>
public static bool Set(string key, object value, DateTime expireTime)
{
IsNullOrEmptyString(key);
return(SuccessOrFail(() =>
{
if (RedisConfigHelper.GetEnableMemoryCache())
{
GetCache().Set(key, value, new MemoryCacheEntryOptions()
{
AbsoluteExpiration = expireTime
});
}
RedisHelper.Set(key, value, expireTime);
}));
}
/// <summary>
/// 单例获取redis服务
/// </summary>
/// <returns></returns>
private static IServer GetServer()
{
lock (redisLock)
{
if (_connection != null && _connection.IsConnected)
{
return(_connection.GetServer(_connection.GetEndPoints()[0]));
}
if (_connection != null)
{
_connection.Dispose();
}
_connection = ConnectionMultiplexer.Connect(RedisConfigHelper.GetRedisConnectionString());
return(_connection.GetServer(_connection.GetEndPoints()[0]));
}
}
/// <summary>
/// 单例获取redis连接数据库
/// </summary>
/// <returns></returns>
private static IDatabase GetDatabase()
{
lock (redisLock)
{
if (_connection != null && _connection.IsConnected)
{
return(_connection.GetDatabase());
}
if (_connection != null)
{
_connection.Dispose();
}
_connection = ConnectionMultiplexer.Connect(RedisConfigHelper.GetRedisConnectionString());
return(_connection.GetDatabase());
}
}
private static MemoryCache GetCache()
{
if (cache == null)
{
lock (cacheLock)
{
if (cache == null)
{
cache = new MemoryCache(new MemoryCacheOptions()
{
//每30秒扫描一次，删除失效的缓存
ExpirationScanFrequency = TimeSpan.FromSeconds(RedisConfigHelper.GetMemoryCacheExpirationScanFrequency())
});
}
}
}
return(cache);
}
/// <summary>
/// 获取缓存
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <returns></returns>
public static T Get <T>(string key)
{
try
{
IsNullOrEmptyString(key);
if (RedisConfigHelper.GetEnableMemoryCache())
{
T cache;
if (GetCache().TryGetValue <T>(key, out cache))
{
return(cache);
}
}
return(RedisHelper.Get <T>(key));
}
catch (Exception ex)
{
return(default(T));
}
}
