Redis筆記-數據類型-Hash 使用範例

介紹簡單的使用
語言:c#
使用函式庫:StackExchange.Redis

//設定連線字串
using (ConnectionMultiplexer conn = ConnectionMultiplexer.Connect("127.0.0.1:10001"))
{
    // 取得操作介面
    IDatabase cache = conn.GetDatabase();

    const string custKey1 = "Key1";

    // 先刪除該Key以確保這個key對應資料型態是全新的
    cache.KeyDeleteAsync(custKey1);

    // 設定值
    cache.HashSetAsync(custKey1, "abc", "def");
    cache.HashSetAsync(custKey1, "ghi", "jkl");
    cache.HashSetAsync(custKey1, "mno", "pqr");

    // 依照custKey1取得對應hash值
    HashEntry[] tResult = cache.HashGetAll(custKey1);
    foreach (HashEntry tHE in tResult)
    {
        Console.WriteLine(tHE.Name + ":" + tHE.Value);
    }
}

我們也可以使用HashSet() 一次設定好Hash的值

//設定連線字串
using (ConnectionMultiplexer conn = ConnectionMultiplexer.Connect("127.0.0.1:10001"))
{
    // 取得操作介面
    IDatabase cache = conn.GetDatabase();

    const string custKey1 = "Key1";

    // 先刪除該Key以確保這個key對應資料型態是全新的
    cache.KeyDeleteAsync(custKey1);

    // 設定值
    HashEntry[] hashEntries =
        {
            new HashEntry("abc", "def"),
            new HashEntry("ghi", "jkl"),
            new HashEntry("mno", "pqr"),
        };
    cache.HashSet(custKey1, hashEntries);

    // 依照custKey1取得對應hash值
    HashEntry[] tResult = cache.HashGetAll(custKey1);
    foreach (HashEntry tHE in tResult)
    {
        Console.WriteLine(tHE.Name + ":" + tHE.Value);
    }
}

以下為使用搜索範例

// 搜索這個key的所有內容
IEnumerable t1 = cache.HashScan(custKey1);
HashEntry[] v1 = t1.ToArray();
                
Console.WriteLine("==HashScan(custKey1)==");
foreach (HashEntry tHE in v1)
{
    Console.WriteLine(tHE.Name + ":" + tHE.Value);
}

條件過濾

// 加條件的過濾搜索
IEnumerable t2 = cache.HashScan(custKey1, "*h*");
HashEntry[] v2 = t2.ToArray();

Console.WriteLine("==HashScan(custKey1,'*h*')==");
foreach (HashEntry tHE in v2)
{
    Console.WriteLine(tHE.Name + ":" + tHE.Value);
}