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由于是基于.net-core平台,所以,我们最好是基于IDistributedCache接口来实现。ASP.NET-CORE下的官方redis客户端实现是基于StackExchange的。但是官方提供的IDistributeCache接口中的方法只是增删改查,我们可以继续拓展,增加订阅/发布,消息队列,当然这些方法必须是基于底层的StackExchange相对应的方法来做的。 public interface IServiceStackRedisCache : IDistributedCache { void Delete<T>(T item); // 删除 void DeleteAll<T>(T item); T Get<T>(string id); IQueryable<T> GetAll<T>(); IQueryable<T> GetAll<T>(string hash, string value); IQueryable<T> GetAll<T>(string hash, string value, Expression<Func<T, bool>> filter); long PublishMessage(string channel, object item); void Set<T>(T item); void Set<T>(T item, List<string> hash, List<string> value, string keyName); void Set<T>(T item, string hash, string value, string keyName); void SetAll<T>(List<T> listItems); void SetAll<T>(List<T> list, List<string> hash, List<string> value, string keyName); void SetAll<T>(List<T> list, string hash, string value, string keyName); } 接口有了,接下来就是继承自接口的类,我们定义一个类来实现接口里的方法,例如: using ServiceStack.Redis; namespace Microsoft.Extensions.Caching.Redis { public class ServiceStackRedisCache : IServiceStackRedisCache { private readonly IRedisClientsManager _redisManager; private readonly ServiceStackRedisCacheOptions _options; public ServiceStackRedisCache(IOptions<ServiceStackRedisCacheOptions> optionsAccessor) { if (optionsAccessor == null) { throw new ArgumentNullException(nameof(optionsAccessor)); } _options = optionsAccessor.Value; var host = $"{_options.Password}@{_options.Host}:{_options.Port}"; RedisConfig.VerifyMasterConnections = false; _redisManager = new RedisManagerPool(host); } #region Base public byte[] Get(string key) { if (key == null) { throw new ArgumentNullException(nameof(key)); } using (var client = _redisManager.GetClient() as IRedisNativeClient) { if (client.Exists(key) == 1) { return client.Get(key); } } return null; } public async Task<byte[]> GetAsync(string key) { return Get(key); } public void Set(string key, byte[] value, DistributedCacheEntryOptions options) { if (key == null) { throw new ArgumentNullException(nameof(key)); } if (value == null) { throw new ArgumentNullException(nameof(value)); } if (options == null) { throw new ArgumentNullException(nameof(options)); } using (var client = _redisManager.GetClient() as IRedisNativeClient) { var expireInSeconds = GetExpireInSeconds(options); if (expireInSeconds > 0) { client.SetEx(key, expireInSeconds, value); client.SetEx(GetExpirationKey(key), expireInSeconds, Encoding.UTF8.GetBytes(expireInSeconds.ToString())); } else { client.Set(key, value); } } } public async Task SetAsync(string key, byte[] value, DistributedCacheEntryOptions options) { Set(key, value, options); } public void Refresh(string key) { if (key == null) { throw new ArgumentNullException(nameof(key)); } using (var client = _redisManager.GetClient() as IRedisNativeClient) { if (client.Exists(key) == 1) { var value = client.Get(key); if (value != null) { var expirationValue = client.Get(GetExpirationKey(key)); if (expirationValue != null) { client.Expire(key, int.Parse(Encoding.UTF8.GetString(expirationValue))); } } } } } public async Task RefreshAsync(string key) { if (key == null) { throw new ArgumentNullException(nameof(key)); } Refresh(key); } public void Remove(string key) { if (key == null) { throw new ArgumentNullException(nameof(key)); } using (var client = _redisManager.GetClient() as IRedisNativeClient) { client.Del(key); } } public async Task RemoveAsync(string key) { Remove(key); } private int GetExpireInSeconds(DistributedCacheEntryOptions options) { if (options.SlidingExpiration.HasValue) { return (int)options.SlidingExpiration.Value.TotalSeconds; } else if (options.AbsoluteExpiration.HasValue) { return (int)options.AbsoluteExpirationRelativeToNow.Value.TotalSeconds; } else { return 0; } } private string GetExpirationKey(string key) { return key + $"-{nameof(DistributedCacheEntryOptions)}"; } #endregion #region data public T Get<T>(string id) { using (var redisClient = _redisManager.GetClient()) { var redis = redisClient.As<T>(); return redis.GetById(id.ToLower()); } } public IQueryable<T> GetAll<T>() { using (var redisClient = _redisManager.GetClient()) { var redis = redisClient.As<T>(); return redis.GetAll().AsQueryable(); } } public IQueryable<T> GetAll<T>(string hash, string value, Expression<Func<T, bool>> filter) { var filtered = _redisManager.GetClient().GetAllEntriesFromHash(hash).Where(c => c.Value.Equals(value, StringComparison.CurrentCultureIgnoreCase)); var ids = filtered.Select(c => c.Key); var ret = _redisManager.GetClient().As<T>().GetByIds(ids).AsQueryable() .Where(filter); return ret; } public IQueryable<T> GetAll<T>(string hash, string value) { var filtered = _redisManager.GetClient().GetAllEntriesFromHash(hash).Where(c => c.Value.Equals(value, StringComparison.CurrentCultureIgnoreCase)); var ids = filtered.Select(c => c.Key); var ret = _redisManager.GetClient().As<T>().GetByIds(ids).AsQueryable(); return ret; } public void Set<T>(T item) { using (var redisClient = _redisManager.GetClient()) { var redis = redisClient.As<T>(); redis.Store(item); } } public void Set<T>(T item, string hash, string value, string keyName) { Type t = item.GetType(); PropertyInfo prop = t.GetProperty(keyName); _redisManager.GetClient().SetEntryInHash(hash, prop.GetValue(item).ToString(), value.ToLower()); _redisManager.GetClient().As<T>().Store(item); } public void Set<T>(T item, List<string> hash, List<string> value, string keyName) { Type t = item.GetType(); PropertyInfo prop = t.GetProperty(keyName); for (int i = 0; i < hash.Count; i++) { _redisManager.GetClient().SetEntryInHash(hash[i], prop.GetValue(item).ToString(), value[i].ToLower()); } _redisManager.GetClient().As<T>().Store(item); } public void SetAll<T>(List<T> listItems) { using (var redisClient = _redisManager.GetClient()) { var redis = redisClient.As<T>(); redis.StoreAll(listItems); } } public void SetAll<T>(List<T> list, string hash, string value, string keyName) { foreach (var item in list) { Type t = item.GetType(); PropertyInfo prop = t.GetProperty(keyName); _redisManager.GetClient().SetEntryInHash(hash, prop.GetValue(item).ToString(), value.ToLower()); _redisManager.GetClient().As<T>().StoreAll(list); } } public void SetAll<T>(List<T> list, List<string> hash, List<string> value, string keyName) { foreach (var item in list) { Type t = item.GetType(); PropertyInfo prop = t.GetProperty(keyName); for (int i = 0; i < hash.Count; i++) { _redisManager.GetClient().SetEntryInHash(hash[i], prop.GetValue(item).ToString(), value[i].ToLower()); } _redisManager.GetClient().As<T>().StoreAll(list); } } public void Delete<T>(T item) { using (var redisClient = _redisManager.GetClient()) { var redis = redisClient.As<T>(); redis.Delete(item); } } public void DeleteAll<T>(T item) { using (var redisClient = _redisManager.GetClient()) { var redis = redisClient.As<T>(); redis.DeleteAll(); } } public long PublishMessage(string channel, object item) { var ret = _redisManager.GetClient().PublishMessage(channel, JsonConvert.SerializeObject(item)); return ret; } #endregion } } 在这里我们使用ServiceStack来作为底层redis驱动。在构造函数中根据配置连接redis服务器。 aps.net-core给我们提供了强大的配置功能,使用强类型的Options,一般,我们实现一个继承自IOptions<TOptions>的类。定义一些字段用来表示主机,端口等常规redis配置选项。由于IOptions接口定义了一个Value属性,我们可以通过这个属性来获取配置类的实例。 private readonly IServiceStackRedisCache _cache; public ValuesController(IServiceStackRedisCache cache) { _cache = cache; } 如此,我们才能使用redis客户端去操作redis服务器。 services.Configure(setupAction);
services.Add(ServiceDescriptor.Singleton<IServiceStackRedisCache, ServiceStackRedisCache>());
整个步骤就是: 完整demo下载:链接:https://pan.baidu.com/s/17w0c0y9_VF3TzvgilgazjQ 密码:4u5e |
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