/// <summary>
/// Gets a regular Object out of the cache.
/// </summary>
/// <param name="key">Cache key</param>
/// <param name="partitionName">
/// Optional value for the name of a partition in the application cache. Partitions can be a good way to categorize or group
/// certain types of items in the cache together.
/// </param>
/// <returns>Regular (untyped) C# object representing the value in the cache</returns>
public async Task <object> GetAsync(string key, string partitionName = "")
{
if (string.IsNullOrEmpty(key))
{
return(null);
}
RedisDb.RedisValue cacheValue;
if (string.IsNullOrEmpty(partitionName))
{
cacheValue = await _redisDatabase.StringGetAsync(key).ConfigureAwait(false);
if (cacheValue.IsNullOrEmpty)
{
return(null);
}
}
else
{
var partitionKey = ComposePartitionKey(partitionName);
// Check to see if the value has timed out
var timeout = await GetTimeoutValueAsync(partitionName, key).ConfigureAwait(false);
if (timeout != default(DateTimeOffset) && timeout < DateTimeOffset.UtcNow)
{
await RemoveExpiredItemsFromPartitionAsync(partitionName).ConfigureAwait(false);
return(null);
}
// Retrieve the actual RedisValue
cacheValue = await _redisDatabase.HashGetAsync(partitionKey, key).ConfigureAwait(false);
// If we have a null value, return null
if (cacheValue.IsNullOrEmpty)
{
return(null);
}
}
var objValue = JsonConvert.DeserializeObject(cacheValue);
return(objValue);
}
/// <summary>
/// 在 hash 中获取值
/// </summary>
/// <param name="redisKey"></param>
/// <param name="hashField"></param>
/// <returns></returns>
public async Task <RedisValue> HashGetAsync(string redisKey, string hashField)
{
redisKey = GetKeyForRedis(redisKey);
return(await _database.HashGetAsync(redisKey, hashField));
}