Redis Expire不起作用
我使用ServiceStack.Redis(从最新资源构建:https
:
//github.com/ServiceStack/ServiceStack.Redis/tree/master/src)。
我做这样的事情:
CacheRecord foundKey = cacheRecords.GetById(p_sParentKey);...
CacheRecord cacheRecord = cacheRecords.Store(foundKey);
...
redisClient.Expire(p_sParentKey, validityPeriodInMinutes * 60);
我试图调试使用
Console.WriteLine(cacheRecords.GetTimeToLive(p_sParentKey));
哪个返回-00:00:01
。我分配给validityPeriodInMinutes的值都没有关系。
我试过藏汉Expire
,ExpireAt
,ExpireEntryAt
,ExpireEntryIn
。我也尝试过这样的事情:
int epoch = (int)(DateTime.UtcNow.AddSeconds(validityPeriodInMinutes) - new DateTime(1970, 1, 1)).TotalSeconds;redisClient.ExpireAt(p_sParentKey, epoch);
任何的想法?
[Serializable]public class CacheRecord
{
public CacheRecord()
{
this.Children = new List<CacheRecordChild>();
}
public string Id { get; set; }
public List<CacheRecordChild> Children { get; set; }
}
#endregion
#region public class CacheRecordChild
[Serializable]
public class CacheRecordChild
{
public string Id { get; set; }
public string Data { get; set; }
}
public void AddKey(string p_sParentKey, string p_sChildKey, string p_sData, int validityPeriodInMinutes)
{
using (ServiceStack.Redis.RedisClient redisClient = new ServiceStack.Redis.RedisClient())
{
using (var cacheRecords = redisClient.GetTypedClient<CacheRecord>())
{
CacheRecord foundKey = cacheRecords.GetById(p_sParentKey);
if (foundKey == null)
{
foundKey = new CacheRecord();
foundKey.Id = p_sParentKey;
CacheRecordChild child = new CacheRecordChild();
child.Id = p_sChildKey;
child.Data = p_sData;
foundKey.Children.Add(child);
CacheRecord cacheRecord = cacheRecords.Store(foundKey);
//redisClient.Expire(p_sParentKey, validityPeriodInMinutes);
redisClient.Expire(p_sParentKey, validityPeriodInMinutes * 60);
}
else
{
CacheRecordChild child = new CacheRecordChild();
child.Id = p_sChildKey;
child.Data = p_sData;
foundKey.Children.Add(child);
CacheRecord cacheRecord = cacheRecords.Store(foundKey);
// redisClient.Expire(p_sParentKey, validityPeriodInMinutes);
// redisClient.Expire(p_sParentKey, validityPeriodInMinutes * 60);
// int epoch = (int)(DateTime.UtcNow.AddSeconds(validityPeriodInMinutes) - new DateTime(1970, 1, 1)).TotalSeconds;
redisClient.Expire(p_sParentKey, validityPeriodInMinutes * 60);
}
}
}
}
回答:
抱歉,我无法真正很好地阅读您的代码以了解您是否/做错了什么。
我对Expire和ExpireAt操作进行了一些测试,以下是一些可以更好地演示如何使用它的测试:
https://github.com/ServiceStack/ServiceStack.Redis/blob/master/tests/ServiceStack.Redis.Tests/RedisClientTests.cs
[Test]public void Can_Expire()
{
Redis.SetEntry("key", "val");
Redis.Expire("key", 1);
Assert.That(Redis.ContainsKey("key"), Is.True);
Thread.Sleep(2000);
Assert.That(Redis.ContainsKey("key"), Is.False);
}
[Test]
public void Can_ExpireAt()
{
Redis.SetEntry("key", "val");
var unixNow = DateTime.Now.ToUnixTime();
var in1Sec = unixNow + 1;
Redis.ExpireAt("key", in1Sec);
Assert.That(Redis.ContainsKey("key"), Is.True);
Thread.Sleep(2000);
Assert.That(Redis.ContainsKey("key"), Is.False);
}
如果您仍然遇到问题,请发布可运行的代码段或要点,以便我更好地阅读您的代码。
编辑:回答代码示例
当使用类型化的客户端时,最终存储在Redis中的密钥如下所示:
'urn:CacheRecord:' + p_sParentKey
这与您在示例中使用的键不同:
redisClient.Expire(p_sParentKey, validityPeriodInMinutes * 60);
因此,有两种方法可以获取Redis中使用的 。如果您拥有实体,则可以使用ToUrn()扩展方法,例如
var cacheKey = foundKey.ToUrn();
否则,如果您只有’Id’,则可以创建 例如:
var cacheKey = IdUtils.CreateUrn<CacheRecord>(p_sParentKey);
从那里您可以终止您的输入:
redisClient.Expire(cacheKey, validityPeriodInMinutes * 60);
尽管我了解这不是很直观,但是我希望在将来的版本中添加
方法,该方法将自动为您执行此操作。然后,您应该可以执行以下操作:
cacheRecords.ExpireIn(p_sParentKey, TimeSpan.FromMinutes(validityPeriodInMinutes));
编辑:添加的方法重载:
我在最新版本的Redis客户端(v2.07)中添加了上述方法,您可以在此处下载该方法:https
:
//github.com/ServiceStack/ServiceStack.Redis/downloads
使用您的CacheRecord进行测试。
顺便说一句:Redis客户端实际上并不需要[Serializer]属性。
以上是 Redis Expire不起作用 的全部内容, 来源链接: utcz.com/qa/434892.html