StackExchange.Redis 管道 批量 高性能插入数据

现在用redis来做数据缓存的越来越多了，很多项目都有初始化redis数据的过程，由于初始化的数据比较大，那么该过程越快越好。这里我们以HashSet方法为例，

这里我们推荐用HashEntry[] hashFields方法传入多个fields，应为它发送的HMSET指令即批量插入数据，另一个方法发送的HSET指令。

在阅读StackExchange.Redis里面我确实没有找到pipe指令，后来发现该指令的实现是：通过CreateBatch方法实现的。源码的单元测试例子是：

using System;using System.Collections.Generic;using System.Threading.Tasks;using NUnit.Framework;namespace Tests{    [TestFixture]    public class Batches    {        [Test]        public void TestBatchNotSent()        {            using (var muxer = Config.GetUnsecuredConnection())            {                var conn = muxer.GetDatabase(0);                conn.KeyDeleteAsync("batch");                conn.StringSetAsync("batch", "batch-not-sent");                var tasks = new List<Task>();                var batch = conn.CreateBatch();                                tasks.Add(batch.KeyDeleteAsync("batch"));                tasks.Add(batch.SetAddAsync("batch", "a"));                tasks.Add(batch.SetAddAsync("batch", "b"));                tasks.Add(batch.SetAddAsync("batch", "c"));                Assert.AreEqual("batch-not-sent", (string)conn.StringGet("batch"));            }        }        [Test]        public void TestBatchSent()        {            using (var muxer = Config.GetUnsecuredConnection())            {                var conn = muxer.GetDatabase(0);                conn.KeyDeleteAsync("batch");                conn.StringSetAsync("batch", "batch-sent");                var tasks = new List<Task>();                var batch = conn.CreateBatch();                tasks.Add(batch.KeyDeleteAsync("batch"));                tasks.Add(batch.SetAddAsync("batch", "a"));                tasks.Add(batch.SetAddAsync("batch", "b"));                tasks.Add(batch.SetAddAsync("batch", "c"));                batch.Execute();                                var result = conn.SetMembersAsync("batch");                tasks.Add(result);                Task.WhenAll(tasks.ToArray());                var arr = result.Result;                Array.Sort(arr, (x, y) => string.Compare(x, y));                Assert.AreEqual(3, arr.Length);                Assert.AreEqual("a", (string)arr[0]);                Assert.AreEqual("b", (string)arr[1]);                Assert.AreEqual("c", (string)arr[2]);            }        }    }}

   var batch = conn.CreateBatch();这里的batch实际就是管道。真正的执行需要调用 batch.Execute()方法。网上也有类似的文章 redis大幅性能提升之使用管道（PipeLine）和批量（Batch）操作