public void Remove(CacheGroup group)
{
foreach (var entry in _cache.GetEntriesByGroup(group))
{
_cache.Remove(entry);
}
}
public void Set(CacheGroup group, object key, object value, ExpirationSettings settings)
{
var cacheKey = GenerateCacheKey(group, key);
if (settings != null)
{
var options = new MemoryCacheEntryOptions();
if (settings.AbsoluteExpiration.HasValue)
{
options.AbsoluteExpirationRelativeToNow = TimeSpan.FromHours((double)settings.AbsoluteExpiration.Value);
}
if (settings.SlidingExpiration.HasValue)
{
options.SlidingExpiration = TimeSpan.FromHours((double)settings.SlidingExpiration.Value);
}
_cache.Set(GenerateCacheKey(group, key), value, options);
}
else
{
_cache.Set(GenerateCacheKey(group, key), value);
}
}
/// <summary>
/// 根据枚举CacheGroup来切换缓存
/// </summary>
/// <param name="groupType"></param>
/// <returns></returns>
public static ICache Get(CacheGroup groupType = CacheGroup.Default)
{
if (!ConfigurationManager.AppSettings["IsEnableCache"].ToBool())
{
return(IocContainer.Resolve <ICache>(CacheType.Empty.ToString()));
}
CacheType cacheType;
switch (groupType)
{
case CacheGroup.Default:
default:
cacheType = CacheType.Local;
break;
}
return(IocContainer.Resolve <ICache>(cacheType.ToString()));
}
public CacheAttribute(CacheItem item, int expireSecond = 0, CacheGroup groupType = CacheGroup.Default)
{
CacheItem = item;
ExpireSecond = expireSecond;
CacheGroup = groupType;
}
public static IEnumerable <object> GetEntriesByGroup(this IMemoryCache memoryCache, CacheGroup group)
{
var flags = BindingFlags.Instance | BindingFlags.NonPublic;
var entries = (IDictionary)memoryCache.GetType().GetField("_entries", flags).GetValue(memoryCache);
return(entries.Keys.Cast <string>().Where(x => x.ToString().StartsWith(group.GetDescription())));
}
public void Remove(CacheGroup group, object key)
{
var cacheKey = GenerateCacheKey(group, key);
_cache.Remove(cacheKey);
}
public void Set(CacheGroup group, object key, object value)
{
this.Set(group, key, value, null);
}
public bool TryGetValue <TItem>(CacheGroup group, object key, out TItem value) => _cache.TryGetValue <TItem>(GenerateCacheKey(group, key), out value);
public TItem Get <TItem>(CacheGroup group, object key) => _cache.Get <TItem>(GenerateCacheKey(group, key));
private string GenerateCacheKey(CacheGroup group, object key) => string.Format("{0}.{1}", group.GetDescription(), key);
