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。
Console.WriteLine(cacheRecords.GetTimeToLive(p_sParentKey));
-00:00:01
我试过藏汉Expire,ExpireAt,ExpireEntryAt,ExpireEntryIn。我也尝试过这样的事情:
Expire
ExpireAt
ExpireEntryAt
ExpireEntryIn
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); } } } }
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 urn密钥 。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 urn键, 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 RedisTypedClient.ExpiryIn 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。