.NET Core实现简单的Redis Client框架
目录
- 0,关于RedisRESP
- 1,定义数据类型
- 2,定义异步消息状态机
- 3,定义命令发送模板
- 4,定义RedisClient
- 5,实现简单的RESP解析
- 6,实现命令发送客户端
- 7,如何使用
- 8,更多客户端
- 9,更多测试
- 10,性能测试
0,关于 Redis RESP
RESP 全称 REdis Serialization Protocol ,即 Redis 序列化协议,用于协定客户端使用 socket 连接 Redis 时,数据的传输规则。
官方协议说明:https://redis.io/topics/protocol
那么 RESP 协议在与 Redis 通讯时的 请求-响应 方式如下:
- 客户端将命令作为 RESP 大容量字符串数组(即 C# 中使用 byte[] 存储字符串命令)发送到 Redis 服务器。
- 服务器根据命令实现以 RESP 类型进行回复。
RESP 中的类型并不是指 Redis 的基本数据类型,而是指数据的响应格式:
在 RESP 中,某些数据的类型取决于第一个字节:
- 对于简单字符串,答复的第一个字节为“ +”
- 对于错误,回复的第一个字节为“-”
- 对于整数,答复的第一个字节为“:”
- 对于批量字符串,答复的第一个字节为“ $”
- 对于数组,回复的第一个字节为“
*
”
对于这些,可能初学者不太了解,下面我们来实际操作一下。
我们打开 Redis Desktop Manager ,然后点击控制台,输入:
set a 12 set b 12 set c 12 MGET abc
以上命令每行按一下回车键。MGET 是 Redis 中一次性取出多个键的值的命令。
输出结果如下:
本地:0>SET a 12 "OK" 本地:0>SET b 12 "OK" 本地:0>SET c 12 "OK" 本地:0>MGET a b c 1) "12" 2) "12" 3) "12"
但是这个管理工具以及去掉了 RESP 中的协议标识符,我们来写一个 demo 代码,还原 RESP 的本质。
using System; using System.Linq; using System.Net; using System.Net.Sockets; using System.Text; using System.Threading; using System.Threading.Tasks; namespace ConsoleApp { class Program { static async Task Main(string[] args) { IPAddress IP = IPAddress.Parse("127.0.0.1"); IPEndPoint IPEndPoint = new IPEndPoint(IP, 6379); Socket client = new Socket(IP.AddressFamily, SocketType.Stream, ProtocolType.Tcp); await client.ConnectAsync(IPEndPoint); if (!client.Connected) { Console.WriteLine("连接 Redis 服务器失败!"); Console.Read(); } Console.WriteLine("恭喜恭喜,连接 Redis 服务器成功"); // 后台接收消息 new Thread(() => { while (true) { byte[] data = new byte[100]; int size = client.Receive(data); Console.WriteLine(); Console.WriteLine(Encoding.UTF8.GetString(data)); Console.WriteLine(); } }).Start(); while (true) { Console.Write("$> "); string command = Console.ReadLine(); // 发送的命令必须以 \r\n 结尾 int size = client.Send(Encoding.UTF8.GetBytes(command + "\r\n")); Thread.Sleep(100); } } } }
输入以及输出结果:
$> SET a 123456789 +OK $> SET b 123456789 +OK $> SET c 123456789 +OK $> MGET a b c *3 $9 123456789 $9 123456789 $9 123456789
可见,Redis 响应的消息内容,是以 $、*、+ 等字符开头的,并且使用 \r\n 分隔。
我们写 Redis Client 的方法就是接收 socket 内容,然后从中解析出实际的数据。
每次发送设置命令成功,都会返回 +OK;*3 表示有三个数组;$9 表示接收的数据长度是 9;
大概就是这样了,下面我们来写一个简单的 Redis Client 框架,然后睡觉。
记得使用 netstandard2.1,因为有些 byte[] 、string、ReadOnlySpan<T>
的转换,需要 netstandard2.1 才能更加方便。
1,定义数据类型
根据前面的 demo,我们来定义一个类型,存储那些特殊符号:
/// <summary> /// RESP Response 类型 /// </summary> public static class RedisValueType { public const byte Errors = (byte)'-'; public const byte SimpleStrings = (byte)'+'; public const byte Integers = (byte)':'; public const byte BulkStrings = (byte)'$'; public const byte Arrays = (byte)'*'; public const byte R = (byte)'\r'; public const byte N = (byte)'\n'; }
2,定义异步消息状态机
创建一个 MessageStrace 类,作用是作为消息响应的异步状态机,并且具有解析数据流的功能。
/// <summary> /// 自定义消息队列状态机 /// </summary> public abstract class MessageStrace { protected MessageStrace() { TaskCompletionSource = new TaskCompletionSource<string>(); Task = TaskCompletionSource.Task; } protected readonly TaskCompletionSource<string> TaskCompletionSource; /// <summary> /// 标志任务是否完成,并接收 redis 响应的字符串数据流 /// </summary> public Task<string> Task { get; private set; } /// <summary> /// 接收数据流 /// </summary> /// <param name="stream"></param> /// <param name="length">实际长度</param> public abstract void Receive(MemoryStream stream, int length); /// <summary> /// 响应已经完成 /// </summary> /// <param name="data"></param> protected void SetValue(string data) { TaskCompletionSource.SetResult(data); } /// <summary> /// 解析 $ 或 * 符号后的数字,必须传递符后后一位的下标 /// </summary> /// <param name="data"></param> /// <param name="index">解析到的位置</param> /// <returns></returns> protected int BulkStrings(ReadOnlySpan<byte> data, ref int index) { int start = index; int end = start; while (true) { if (index + 1 >= data.Length) throw new ArgumentOutOfRangeException("溢出"); // \r\n if (data[index].CompareTo(RedisValueType.R) == 0 && data[index + 1].CompareTo(RedisValueType.N) == 0) { index += 2; // 指向 \n 的下一位 break; } end++; index++; } // 截取 $2 *3 符号后面的数字 return Convert.ToInt32(Encoding.UTF8.GetString(data.Slice(start, end - start).ToArray())); } }
3,定义命令发送模板
由于 Redis 命令非常多,为了更加好的封装,我们定义一个消息发送模板,规定五种类型分别使用五种类型发送 Client。
定义一个统一的模板类:
using System; using System.Collections.Generic; using System.Text; using System.Threading.Tasks; namespace CZGL.RedisClient { /// <summary> /// 命令发送模板 /// </summary> public abstract class CommandClient<T> where T : CommandClient<T> { protected RedisClient _client; protected CommandClient() { } protected CommandClient(RedisClient client) { _client = client; } /// <summary> /// 复用 /// </summary> /// <param name="client"></param> /// <returns></returns> internal virtual CommandClient<T> Init(RedisClient client) { _client = client; return this; } /// <summary> /// 请求是否成功 /// </summary> /// <param name="value">响应的消息</param> /// <returns></returns> protected bool IsOk(string value) { if (value[0].CompareTo('+') != 0 || value[1].CompareTo('O') != 0 || value[2].CompareTo('K') != 0) return false; return true; } /// <summary> /// 发送命令 /// </summary> /// <param name="command">发送的命令</param> /// <param name="strace">数据类型客户端</param> /// <returns></returns> protected Task SendCommand<TStrace>(string command, out TStrace strace) where TStrace : MessageStrace, new() { strace = new TStrace(); return _client.SendAsync(strace, command); } } }
4,定义 Redis Client
RedisClient 类用于发送 Redis 命令,然后将任务放到队列中;接收 Redis 返回的数据内容,并将数据流写入内存中,调出队列,设置异步任务的返回值。
Send 过程可以并发,但是接收消息内容使用单线程。为了保证消息的顺序性,采用队列来记录 Send - Receive 的顺序。
C# 的 Socket 比较操蛋,想搞并发和高性能 Socket 不是那么容易。
以下代码有三个地方注释了,后面继续编写其它代码会用到。
using System; using System.Collections.Concurrent; using System.Collections.Generic; using System.IO; using System.Net; using System.Net.Sockets; using System.Runtime.CompilerServices; using System.Text; using System.Threading; using System.Threading.Tasks; namespace CZGL.RedisClient { /// <summary> /// Redis 客户端 /// </summary> public class RedisClient { private readonly IPAddress IP; private readonly IPEndPoint IPEndPoint; private readonly Socket client; //private readonly Lazy<StringClient> stringClient; //private readonly Lazy<HashClient> hashClient; //private readonly Lazy<ListClient> listClient; //private readonly Lazy<SetClient> setClient; //private readonly Lazy<SortedClient> sortedClient; // 数据流请求队列 private readonly ConcurrentQueue<MessageStrace> StringTaskQueue = new ConcurrentQueue<MessageStrace>(); public RedisClient(string ip, int port) { IP = IPAddress.Parse(ip); IPEndPoint = new IPEndPoint(IP, port); //stringClient = new Lazy<StringClient>(() => new StringClient(this)); //hashClient = new Lazy<HashClient>(() => new HashClient(this)); //listClient = new Lazy<ListClient>(() => new ListClient(this)); //setClient = new Lazy<SetClient>(() => new SetClient(this)); //sortedClient = new Lazy<SortedClient>(() => new SortedClient(this)); client = new Socket(IP.AddressFamily, SocketType.Stream, ProtocolType.Tcp); } /// <summary> /// 开始连接 Redis /// </summary> public async Task<bool> ConnectAsync() { await client.ConnectAsync(IPEndPoint); new Thread(() => { ReceiveQueue(); }) { IsBackground = true }.Start(); return client.Connected; } /// <summary> /// 发送一个命令,将其加入队列 /// </summary> /// <param name="task"></param> /// <param name="command"></param> /// <returns></returns> internal Task<int> SendAsync(MessageStrace task, string command) { var buffer = Encoding.UTF8.GetBytes(command + "\r\n"); var result = client.SendAsync(new ArraySegment<byte>(buffer, 0, buffer.Length), SocketFlags.None); StringTaskQueue.Enqueue(task); return result; } /* Microsoft 对缓冲区输入不同大小的数据,测试响应时间。 1024 - real 0m0,102s; user 0m0,018s; sys 0m0,009s 2048 - real 0m0,112s; user 0m0,017s; sys 0m0,009s 8192 - real 0m0,163s; user 0m0,017s; sys 0m0,007s 256 - real 0m0,101s; user 0m0,019s; sys 0m0,008s 16 - real 0m0,144s; user 0m0,016s; sys 0m0,010s .NET Socket,默认缓冲区的大小为 8192 字节。 Socket.ReceiveBufferSize: An Int32 that contains the size, in bytes, of the receive buffer. The default is 8192. 但响应中有很多只是 "+OK\r\n" 这样的响应,并且 MemoryStream 刚好默认是 256(当然,可以自己设置大小),缓冲区过大,浪费内存; 超过 256 这个大小,MemoryStream 会继续分配新的 256 大小的内存区域,会消耗性能。 BufferSize 设置为 256 ,是比较合适的做法。 */ private const int BufferSize = 256; /// <summary> /// 单线程串行接收数据流,调出任务队列完成任务 /// </summary> private void ReceiveQueue() { while (true) { MemoryStream stream = new MemoryStream(BufferSize); // 内存缓存区 byte[] data = new byte[BufferSize]; // 分片,每次接收 N 个字节 int size = client.Receive(data); // 等待接收一个消息 int length = size; // 数据流总长度 while (true) { stream.Write(data, 0, size); // 分片接收的数据流写入内存缓冲区 // 数据流接收完毕 if (size < BufferSize) // 存在 Bug ,当数据流的大小或者数据流分片最后一片的字节大小刚刚好为 BufferSize 大小时,无法跳出 Receive { break; } length += client.Receive(data); // 还没有接收完毕,继续接收 } stream.Seek(0, SeekOrigin.Begin); // 重置游标位置 // 调出队列 StringTaskQueue.TryDequeue(out var tmpResult); // 处理队列中的任务 tmpResult.Receive(stream, length); } } /// <summary> /// 复用 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="client"></param> /// <returns></returns> public T GetClient<T>(T client) where T : CommandClient<T> { client.Init(this); return client; } ///// <summary> ///// 获取字符串请求客户端 ///// </summary> ///// <returns></returns> //public StringClient GetStringClient() //{ // return stringClient.Value; //} //public HashClient GetHashClient() //{ // return hashClient.Value; //} //public ListClient GetListClient() //{ // return listClient.Value; //} //public SetClient GetSetClient() //{ // return setClient.Value; //} //public SortedClient GetSortedClient() //{ // return sortedClient.Value; //} } }
5,实现简单的 RESP 解析
下面使用代码来实现对 Redis RESP 消息的解析,时间问题,我只实现 +、-、$、* 四个符号的解析,其它符号可以自行参考完善。
创建一个 MessageStraceAnalysis`.cs ,其代码如下:
using System; using System.Collections.Generic; using System.IO; using System.Text; namespace CZGL.RedisClient { /// <summary> /// RESP 解析数据流 /// </summary> public class MessageStraceAnalysis<T> : MessageStrace { public MessageStraceAnalysis() { } /// <summary> /// 解析协议 /// </summary> /// <param name="data"></param> public override void Receive(MemoryStream stream, int length) { byte firstChar = (byte)stream.ReadByte(); // 首位字符,由于游标已经到 1,所以后面 .GetBuffer(),都是从1开始截断,首位字符舍弃; if (firstChar.CompareTo(RedisValueType.SimpleStrings) == 0) // 简单字符串 { SetValue(Encoding.UTF8.GetString(stream.GetBuffer())); return; } else if (firstChar.CompareTo(RedisValueType.Errors) == 0) { TaskCompletionSource.SetException(new InvalidOperationException(Encoding.UTF8.GetString(stream.GetBuffer()))); return; } // 不是 + 和 - 开头 stream.Position = 0; int index = 0; ReadOnlySpan<byte> data = new ReadOnlySpan<byte>(stream.GetBuffer()); string tmp = Analysis(data, ref index); SetValue(tmp); } // 进入递归处理流程 private string Analysis(ReadOnlySpan<byte> data, ref int index) { // * if (data[index].CompareTo(RedisValueType.Arrays) == 0) { string value = default; index++; int size = BulkStrings(data, ref index); if (size == 0) return string.Empty; else if (size == -1) return null; for (int i = 0; i < size; i++) { var tmp = Analysis(data, ref index); value += tmp + ((i < (size - 1)) ? "\r\n" : string.Empty); } return value; } // $.. else if (data[index].CompareTo(RedisValueType.BulkStrings) == 0) { index++; int size = BulkStrings(data, ref index); if (size == 0) return string.Empty; else if (size == -1) return null; var value = Encoding.UTF8.GetString(data.Slice(index, size).ToArray()); index += size + 2; // 脱离之前,将指针移动到 \n 后 return value; } throw new ArgumentException("解析错误"); } } }
6,实现命令发送客户端
由于 Redis 命令太多,如果直接将所有命令封装到 RedisClient 中,必定使得 API 过的,而且代码难以维护。因此,我们可以拆分,根据 string、hash、set 等 redis 类型,来设计客户端。
下面来设计一个 StringClient:
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace CZGL.RedisClient { /// <summary> /// 字符串类型 /// </summary> public class StringClient : CommandClient<StringClient> { internal StringClient() { } internal StringClient(RedisClient client) : base(client) { } /// <summary> /// 设置键值 /// </summary> /// <param name="key">key</param> /// <param name="value">value</param> /// <returns></returns> public async Task<bool> Set(string key, string value) { await SendCommand<MessageStraceAnalysis<string>>($"{StringCommand.SET} {key} {value}", out MessageStraceAnalysis<string> strace); var result = await strace.Task; return IsOk(result); } /// <summary> /// 获取一个键的值 /// </summary> /// <param name="key">键</param> /// <returns></returns> public async Task<string> Get(string key) { await SendCommand($"{StringCommand.GET} {key}", out MessageStraceAnalysis<string> strace); var result = await strace.Task; return result; } /// <summary> /// 从指定键的值中截取指定长度的数据 /// </summary> /// <param name="key">key</param> /// <param name="start">开始下标</param> /// <param name="end">结束下标</param> /// <returns></returns> public async Task<string> GetRance(string key, uint start, int end) { await SendCommand($"{StringCommand.GETRANGE} {key} {start} {end}", out MessageStraceAnalysis<string> strace); var result = await strace.Task; return result; } /// <summary> /// 设置一个值并返回旧的值 /// </summary> /// <param name="key"></param> /// <param name="newValue"></param> /// <returns></returns> public async Task<string> GetSet(string key, string newValue) { await SendCommand($"{StringCommand.GETSET} {key} {newValue}", out MessageStraceAnalysis<string> strace); var result = await strace.Task; return result; } /// <summary> /// 获取二进制数据中某一位的值 /// </summary> /// <param name="key"></param> /// <param name="index"></param> /// <returns>0 或 1</returns> public async Task<int> GetBit(string key, uint index) { await SendCommand($"{StringCommand.GETBIT} {key} {index}", out MessageStraceAnalysis<string> strace); var result = await strace.Task; return Convert.ToInt32(result); } /// <summary> /// 设置某一位为 1 或 0 /// </summary> /// <param name="key"></param> /// <param name="index"></param> /// <param name="value">0或1</param> /// <returns></returns> public async Task<bool> SetBit(string key, uint index, uint value) { await SendCommand($"{StringCommand.SETBIT} {key} {index} {value}", out MessageStraceAnalysis<string> strace); var result = await strace.Task; return IsOk(result); } /// <summary> /// 获取多个键的值 /// </summary> /// <param name="key"></param> /// <returns></returns> public async Task<string[]> MGet(params string[] key) { await SendCommand($"{StringCommand.MGET} {string.Join(" ", key)}", out MessageStraceAnalysis<string> strace); var result = await strace.Task; return result.Split("\r\n"); } private static class StringCommand { public const string SET = "SET"; public const string GET = "GET"; public const string GETRANGE = "GETRANGE"; public const string GETSET = "GETSET"; public const string GETBIT = "GETBIT"; public const string SETBIT = "SETBIT"; public const string MGET = "MGET"; // ... ... 更多 字符串的命令 } } }
StringClient 实现了 7个 Redis String 类型的命令,其它命令触类旁通。
我们打开 RedisClient.cs,解除以下部分代码的注释:
private readonly Lazy<StringClient> stringClient; // 24 行 stringClient = new Lazy<StringClient>(() => new StringClient(this)); // 38 行 // 146 行 /// <summary> /// 获取字符串请求客户端 /// </summary> /// <returns></returns> public StringClient GetStringClient() { return stringClient.Value; }
7,如何使用
RedisClient 使用示例:
static async Task Main(string[] args) { RedisClient client = new RedisClient("127.0.0.1", 6379); var a = await client.ConnectAsync(); if (!a) { Console.WriteLine("连接服务器失败"); Console.ReadKey(); return; } Console.WriteLine("连接服务器成功"); var stringClient = client.GetStringClient(); var result = await stringClient.Set("a", "123456789"); Console.Read(); }
封装的消息命令支持异步。
8,更多客户端
光 String 类型不过瘾,我们继续封装更多的客户端。
哈希:
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace CZGL.RedisClient { public class HashClient : CommandClient<HashClient> { internal HashClient(RedisClient client) : base(client) { } /// <summary> /// 设置哈希 /// </summary> /// <param name="key">键</param> /// <param name="values">字段-值列表</param> /// <returns></returns> public async Task<bool> HmSet(string key, Dictionary<string, string> values) { await SendCommand($"{StringCommand.HMSET} {key} {string.Join(" ", values.Select(x => $"{x.Key} {x.Value}").ToArray())})", out MessageStraceAnalysis<string> strace); var result = await strace.Task; return IsOk(result); } public async Task<bool> HmSet<T>(string key, T values) { Dictionary<string, string> dic = new Dictionary<string, string>(); foreach (var item in typeof(T).GetProperties()) { dic.Add(item.Name, (string)item.GetValue(values)); } await SendCommand($"{StringCommand.HMSET} {key} {string.Join(" ", dic.Select(x => $"{x.Key} {x.Value}").ToArray())})", out MessageStraceAnalysis<string> strace); var result = await strace.Task; return IsOk(result); } public async Task<object> HmGet(string key, string field) { await SendCommand($"{StringCommand.HMGET} {key} {field}", out MessageStraceAnalysis<string> strace); var result = await strace.Task; return IsOk(result); } private static class StringCommand { public const string HMSET = "HMSET "; public const string HMGET = "HMGET"; // ... ... 更多 字符串的命令 } } }
列表:
using System; using System.Collections.Generic; using System.Text; using System.Threading.Tasks; namespace CZGL.RedisClient { public class ListClient : CommandClient<ListClient> { internal ListClient(RedisClient client) : base(client) { } /// <summary> /// 设置键值 /// </summary> /// <param name="key">key</param> /// <param name="value">value</param> /// <returns></returns> public async Task<bool> LPush(string key, string value) { await SendCommand($"{StringCommand.LPUSH} {key} {value}", out MessageStraceAnalysis<string> strace); var result = await strace.Task; return IsOk(result); } public async Task<string> LRange(string key, int start, int end) { await SendCommand($"{StringCommand.LRANGE} {key} {start} {end}", out MessageStraceAnalysis<string> strace); var result = await strace.Task; return result; } private static class StringCommand { public const string LPUSH = "LPUSH"; public const string LRANGE = "LRANGE"; // ... ... 更多 字符串的命令 } } }
集合:
using System; using System.Collections.Generic; using System.Text; using System.Threading.Tasks; namespace CZGL.RedisClient { public class SetClient : CommandClient<SetClient> { internal SetClient() { } internal SetClient(RedisClient client) : base(client) { } public async Task<bool> SAdd(string key, string value) { await SendCommand($"{StringCommand.SADD} {key} {value}", out MessageStraceAnalysis<string> strace); var result = await strace.Task; return IsOk(result); } public async Task<string> SMembers(string key) { await SendCommand($"{StringCommand.SMEMBERS} {key}", out MessageStraceAnalysis<string> strace); var result = await strace.Task; return result; } private static class StringCommand { public const string SADD = "SADD"; public const string SMEMBERS = "SMEMBERS"; // ... ... 更多 字符串的命令 } } }
有序集合:
using System; using System.Collections.Generic; using System.Text; using System.Threading.Tasks; namespace CZGL.RedisClient { public class SortedClient : CommandClient<SortedClient> { internal SortedClient(RedisClient client) : base(client) { } public async Task<bool> ZAdd(string key, string value) { await SendCommand($"{StringCommand.ZADD} {key} {value}", out MessageStraceAnalysis<string> strace); var result = await strace.Task; return IsOk(result); } private static class StringCommand { public const string ZADD = "ZADD"; public const string SMEMBERS = "SMEMBERS"; // ... ... 更多 字符串的命令 } } }
这样,我们就有一个具有简单功能的 RedisClient 框架了。
9,更多测试
为了验证功能是否可用,我们写一些示例:
static RedisClient client = new RedisClient("127.0.0.1", 6379); static async Task Main(string[] args) { var a = await client.ConnectAsync(); if (!a) { Console.WriteLine("连接服务器失败"); Console.ReadKey(); return; } Console.WriteLine("连接服务器成功"); await StringSETGET(); await StringGETRANGE(); await StringGETSET(); await StringMGet(); Console.ReadKey(); } static async Task StringSETGET() { var stringClient = client.GetStringClient(); var b = await stringClient.Set("seta", "6666"); var c = await stringClient.Get("seta"); if (c == "6666") { Console.WriteLine("true"); } } static async Task StringGETRANGE() { var stringClient = client.GetStringClient(); var b = await stringClient.Set("getrance", "123456789"); var c = await stringClient.GetRance("getrance", 0, -1); if (c == "123456789") { Console.WriteLine("true"); } var d = await stringClient.GetRance("getrance", 0, 3); if (d == "1234") { Console.WriteLine("true"); } } static async Task StringGETSET() { var stringClient = client.GetStringClient(); var b = await stringClient.Set("getrance", "123456789"); var c = await stringClient.GetSet("getrance", "987654321"); if (c == "123456789") { Console.WriteLine("true"); } } static async Task StringMGet() { var stringClient = client.GetStringClient(); var a = await stringClient.Set("stra", "123456789"); var b = await stringClient.Set("strb", "123456789"); var c = await stringClient.Set("strc", "123456789"); var d = await stringClient.MGet("stra", "strb", "strc"); if (d.Where(x => x == "123456789").Count() == 3) { Console.WriteLine("true"); } }
10,性能测试
因为只是写得比较简单,而且是单线程,并且内存比较浪费,我觉得性能会比较差。但真相如何呢?我们来测试一下:
static RedisClient client = new RedisClient("127.0.0.1", 6379); static async Task Main(string[] args) { var a = await client.ConnectAsync(); if (!a) { Console.WriteLine("连接服务器失败"); Console.ReadKey(); return; } Console.WriteLine("连接服务器成功"); var stringClient = client.GetStringClient(); Stopwatch watch = new Stopwatch(); watch.Start(); for (int i = 0; i < 3000; i++) { var guid = Guid.NewGuid().ToString(); _ = await stringClient.Set(guid, guid); _ = await stringClient.Get(guid); } watch.Stop(); Console.WriteLine($"总共耗时:{watch.ElapsedMilliseconds} ms"); Console.ReadKey(); }
耗时:
总共耗时:1003 ms
大概就是 1s,3000 个 SET 和 3000 个 GET 共 6000 个请求。看来单线程性能也是很强的。
本文教程源码 Github 地址:https://github.com/whuanle/RedisClientLearn
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