StackExchange.Redis
パイプライン処理

パイプライン化と多重化

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

// intialize key with empty string
await db.StringSetAsync("key", "");

// create transaction that utilize multiplexing and pipelining
ITransaction transacton = db.CreateTransaction();
Task<long> appendA = transacton.StringAppendAsync("key", "a");
Task<long> appendB = transacton.StringAppendAsync("key", "b");
            
if (await transacton.ExecuteAsync()) // sends "MULTI APPEND KEY a APPEND KEY b EXEC
// in single request to redis server
{
    // order here doesn't matter, result is always - "abc". 
    // 'a' and 'b' append always together in isolation of other Redis commands
    // 'c' appends to "ab" because transaction is already executed successfully
    await appendA;
    await db.StringAppendAsync("key", "c");
    await appendB;
}
            
string value = db.StringGet("key"); // value is "abc"