Redis for C#

ServiceStack.Redis

初識Redis時接觸到的.Net-Redis組件是 ServiceStack.Redis,其V3系列的最新版本是:ServiceStack.Redis.3.9.29.0html

ServiceStack.Common.dll
ServiceStack.Interfaces.dll
ServiceStack.Redis.dll
ServiceStack.Text.dll

RedisClientjava

public void Init();
public bool ContainsKey(string key);
public bool Remove(string key);
public void RemoveByPattern(string pattern);
public void RemoveByRegex(string pattern);
public IEnumerable<string> GetKeysByPattern(string pattern);
public List<string> SearchKeys(string pattern);
public List<string> GetAllKeys();  // 數據庫內的全部鍵(慎用)
public string GetRandomKey();
public T Get<T>(string key);
public IRedisTypedClient<T> As<T>();  //  /* 重要 */
public bool Add<T>(string key, T value [, DateTime expiresAt]); // [設置過時時間]
public bool Add<T>(string key, T value [, TimeSpan expiresIn]);
public bool Set<T>(string key, T value [, DateTime expiresAt]);  // [設置過時時間]
public bool Set<T>(string key, T value [, TimeSpan expiresIn]);
public bool ExpireEntryAt(string key, DateTime expireAt);   // 設置過時時間
public bool ExpireEntryIn(string key, TimeSpan expireIn);
public TimeSpan GetTimeToLive(string key);  // TTL時間
public long DecrementValue(string key);  // 減
public long DecrementValueBy(string key, int count);
public long IncrementValue(string key);  // 增
public long IncrementValueBy(string key, int count);

支持類型git

// string
public long GetStringCount(string key);
public string GetValue(string key);
public void SetValue(string key, string value [, TimeSpan expireIn]);
public void RenameKey(string fromName, string toName);
public int AppendToValue(string key, string value);
public string GetAndSetValue(string key, string value);
public string GetSubstring(string key, int fromIndex, int toIndex);
public List<string> GetValues(List<string> keys);
public Dictionary<string, string> GetValuesMap(List<string> keys);

// List
public int GetListCount(string listId);
public int RemoveItemFromList(string listId, string value);
public string RemoveStart/End/AllFromList(string listId);
public void SetItemInList(string listId, int listIndex, string value);
public void AddItemToList(string listId, string value);
public void AddRangeToList(string listId, List<string> values);
public List<string> GetAllItemsFromList(string listId);
public string GetItemFromList(string listId, int listIndex);
public List<string> GetRangeFromList(string listId, int startingFrom, int endingAt);
public List<string> GetRangeFromSortedList(string listId, int startingFrom, int endingAt);
public List<string> GetSortedItemsFromList(string listId, SortOptions sortOptions);
public List<T> GetValues<T>(List<string> keys);
public Dictionary<string, T> GetValuesMap<T>(List<string> keys);
// List做爲隊列
public void EnqueueItemOnList(string listId, string value);
public string DequeueItemFromList(string listId);
// List做爲棧
public void PushItemToList(string listId, string value);
public string PopItemFromList(string listId);
public string PopAndPushItemBetweenLists(string fromListId, string toListId);

// Set
public int GetSetCount(string setId);
public bool SetContainsItem(string setId, string item);
public void RemoveItemFromSet(string setId, string item);
public void AddItemToSet(string setId, string item);
public void AddRangeToSet(string setId, List<string> items);
public HashSet<string> GetAllItemsFromSet(string setId);
public string GetRandomItemFromSet(string setId);
public List<string> GetSortedEntryValues(string setId, int startingFrom, int endingAt);
public HashSet<string> GetDifferencesFromSet(string fromSetId, params string[] withSetIds);
public HashSet<string> GetIntersectFromSets(params string[] setIds);
public HashSet<string> GetUnionFromSets(params string[] setIds);
public void StoreDifferencesFromSet(string intoSetId, string fromSetId, params string[] withSetIds);
public void StoreIntersectFromSets(string intoSetId, params string[] setIds);
public void StoreUnionFromSets(string intoSetId, params string[] setIds);
public void MoveBetweenSets(string fromSetId, string toSetId, string item);
public string PopItemFromSet(string setId); 

// Hash
public int GetHashCount(string hashId);
public bool HashContainsEntry(string hashId, string key);
public bool RemoveEntryFromHash(string hashId, string key);
public bool SetEntryInHash(string hashId, string key, string value);
public List<string> GetHashKeys(string hashId);
public List<string> GetHashValues(string hashId);
public Dictionary<string, string> GetAllEntriesFromHash(string hashId);
public string GetValueFromHash(string hashId, string key);
public List<string> GetValuesFromHash(string hashId, params string[] keys);
public T GetFromHash<T>(object id);

// SortedSet(zset)
public int GetSortedSetCount(string setId);
public bool SortedSetContainsItem(string setId, string value);
public bool RemoveItemFromSortedSet(string setId, string value);
public bool AddItemToSortedSet(string setId, string value [, double score]);
public bool AddRangeToSortedSet(string setId, List<string> values [, double score]);
public List<string> GetRangeFromSortedSet(string setId, int fromRank, int toRank);
public IDictionary<string, double> GetRangeWithScoresFromSortedSet(string setId, int fromRank, int toRank);
public List<string> GetAllItemsFromSortedSet[Desc](string setId);
public IDictionary<string, double> GetAllWithScoresFromSortedSet(string setId);

其中,方法 public IRedisTypedClient<T> As<T>(); 搭配接口 public interface IRedisTypedClient<T> : IEntityStore<T>{} 和 public interface IEntityStore<T>{} 中提供的方法能夠完成各類操做。github

在V3.0版本的基礎上,其V4.0版本 ServiceStack.Redis-4.0.52 提供了更多的方法:redis

  • Scan方法;
  • 獲取設置配置信息;
  • 支持Lua腳本; 
public RedisText Custom(params object[] cmdWithArgs);  // 執行命令
public RedisClient CloneClient();
public string GetClient();
public void SetClient(string name);
public void KillClient(string address);
public void ChangeDb(long db);
public DateTime GetServerTime();
public DateTime ConvertToServerDate(DateTime expiresAt);
public List<Dictionary<string, string>> GetClientsInfo();
public string GetConfig(string configItem);
public void SetConfig(string configItem, string value);
public void SaveConfig();
public void ResetInfoStats();

其中,Custom()方法能夠執行絕大多數的Redis命令,ServiceStack.Redis.Commands定義命令,用於Custom()方法的第一個參數:數據庫

public static class Commands{   
        public static readonly byte[] CommandName;
}   

參考安全

StackExchange.Redis

因爲ServiceStack.Redis的V4.0版本淪爲商業用途,需充值不然限制:1)數據類型; 2)每小時訪問次數6000dom

雖然ServiceStack.Redis有15%的性能優點,但仍是推薦使用:StackExchange.Redis異步

StackExchange.Redis是專爲.Net的Redis客戶端API,被StackOverFlow、微軟官方RedisSessionStateProvider也採用StackExchange.Redis實現。Cache組件 | 微軟官方ide

RedisHelper.dll
StackExchange.Redis.dll

核心:ConnectionMultiplexer類(線程安全),在命名空間StackExchange.Redis中定義,封裝Redis服務的操做細節,該類的實例被整個應用程序域共享和重用

ConnectionMultiplexer redisClient = ConnectionMultiplexer.Connect("localhost");
IDatabase db = redisClient .GetDatabase();

StackExchange.Redis兩個神器:ConnectionCountersIProfiler 

  • ConnectionCounters:分析線程瞬時狀態
  • IProfiler:跟蹤一個請求總共執行redis命令及執行時長

對StackExchange.Redis的封裝,參見:

可是,V1.0版本存在 timeout的問題,超時和異步慢的問題初探解決方法:

// 解決超時
ThreadPool.SetMinThreads(xx, xx); 
// 解決異步慢
connection.PreserveAsyncOrder = false;

該問題在 StackExchange.Redis 2.0 中已解決,重構了異步隊列,採用管道方式解決了異步慢的問題,參見:http://www.javashuo.com/article/p-cjwcmqdv-kp.html

StackExchange.Redis二次封裝 中,建議不要用lock做爲單例使用,避免出現超時問題,待驗證....

應用

Log4net+redis日誌隊列:http://www.javashuo.com/article/p-kalvilum-kh.html

Redis監控:由 Opserver工具  ==> RedisMonitor 

基於 Redis的 Session共享

環境配置

.NET Framework 4.5 (推薦配置)
Microsoft.Web.RedisSessionStateProvider V2.2.6
StackExchange.Redis.StrongName V1.2.1

.NET Framework 4.6.1
RedisSessionProvider V1.2.8
StackExchange.Redis V2.0.6(貌似會報錯,提示用低版本V1.2.6)

使用方法  

public static void RegistRedis()
{
    StackExchange.Redis.ConfigurationOptions redisConfigOpts =
        StackExchange.Redis.ConfigurationOptions.Parse("127.0.0.1:6379");
    redisConfigOpts.Password = "********";

    RedisSessionProvider.Config.RedisConnectionConfig.GetSERedisServerConfig =
        (context) =>
        {
            return new KeyValuePair<string, StackExchange.Redis.ConfigurationOptions>(
                "DefaultConnection", redisConfigOpts);
        };
    RedisSessionProvider.Config.RedisSessionConfig.SessionTimeout = TimeSpan.MaxValue;
} 

CsRedis.Core

CsRedis 開源地址參見:https://github.com/2881099/csredis

/// .NET Framework 4.6
/// NuGet.Tools.vsix V2.12
/// CSRdeis.Core V3.0.62

CsRedis引入:https://www.cnblogs.com/kellynic/p/9803314.html 

相關文章
相關標籤/搜索