public bool IsExist <TValue>(string key, out TValue value)
{
switch (_CacheOptions.CacheMediaType)
{
case CacheMediaType.Local:
return(MemoryCacheHelper.Exist(key, out value));
case CacheMediaType.Redis:
try
{
var redisResult = GetRedisCacheProvider().Get(key);
if (!string.IsNullOrEmpty(redisResult))
{
value = JsonConvert.DeserializeObject <TValue>(redisResult);
return(true);
}
}
catch (ArgumentException argEx)
{
throw argEx;
}
value = default(TValue);
return(false);
default:
value = default(TValue);
return(false);
}
}
public static bool IsExist <TValue>(DbContext dbContext, string key, out TValue value)
{
switch (dbContext.CacheMediaType)
{
case CacheMediaType.Local:
return(MemoryCacheHelper.Exist(key, out value));
case CacheMediaType.Redis:
value = default(TValue);
return(false);
default:
value = default(TValue);
return(false);
}
}
/// <summary>
/// Get Configs
/// </summary>
/// <returns></returns>
private static IEnumerable <T> GetConfigs()
{
//modifyTime reagard as config version
DateTime configDbVersion = ModifyTime;
//if memory cache exist
if (MemoryCacheHelper.Exist(versionCacheKey) && MemoryCacheHelper.Exist(versionCacheKey))
{
//if cache version >= db version,cache is available.
if (Convert.ToDateTime(MemoryCacheHelper.Get <int, DateTime>(versionCacheKey)) >= configDbVersion)
{
return(MemoryCacheHelper.Get <int, IEnumerable <T> >(configCacheKey));
}
}
//if memory cache not exist
var dbConfig = GetConfigsFromDb();
MemoryCacheHelper.Put(configCacheKey, dbConfig);
MemoryCacheHelper.Put(versionCacheKey, configDbVersion);
return(dbConfig);
}
public bool IsExist <TValue>(string key, out TValue value)
{
return(MemoryCacheHelper.Exist <string, TValue>(key, out value));
}
