官方有提供c++ redis的库,看你项目是用到什么依赖,现在自己最熟悉的就好。用起来其实还是那么几个指令,都还是差不多。https://redis.io/clients#c--
redis允许客户端以TCP方式连接,默认6379端口。传输数据都以\r\n结尾。请求格式
*<number of arguments>\r\n$<number of bytes of argument 1>\r\n<argument data>\r\n
例虚档腔:*1\r\n$4\r\nINFO\r\n
响应格式
1:简单字符串,非二进蠢瞎制安全字符串,一般是状态回复。 +开头,例:+OK\r\n
2: 错误信息。-开头, 例:-ERR unknown command 'mush'\r\n
3: 整型数字。:开头, 例::1\r\n
4:大块回复值,最大512M。 $开头+数据长度。 例:$4\r\mush\r\n
5:多条回复。 *开头, 例:*2\r\n$3\r\nfoo\r\n$3\r\nbar\r\n
基础通信
定义配置类:
public class Configuration
{
public string Host { getset}
public int Port { getset}
/// <summary>
/// Socket 是否正在使用 Nagle 算法。
/// </差衫summary>
public bool NoDelaySocket { getset}
public Configuration()
{
Host = "localhost"
Port = 6379
NoDelaySocket = false
}
}
实现socket连接:
public class RedisBaseClient
{
//配置文件
private Configuration configuration
//通信socket
private Socket socket
//接收字节数组
private byte[] ReceiveBuffer = new byte[100000]
public RedisBaseClient(Configuration config)
{
configuration = config
}
public RedisBaseClient()
: this(new Configuration())
{
}
public void Connect()
{
if (socket != null &&socket.Connected)
return
socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp)
{
NoDelay = configuration.NoDelaySocket
}
socket.Connect(configuration.Host, configuration.Port)
if (socket.Connected)
return
Close()
}
/// <summary>
/// 关闭client
/// </summary>
public void Close()
{
socket.Disconnect(false)
socket.Close()
}
}
调用:
RedisBaseClient redis = new RedisBaseClient()
redis.Connect()
服务端成功响应:
状态命令
定义Redis命令枚举:
public enum RedisCommand
{
GET, //获取一个key的值
INFO, //Redis信息。
SET, //添加一个值
EXPIRE, //设置过期时间
MULTI, //标记一个事务块开始
EXEC, //执行所有 MULTI 之后发的命令
}
发送命令构建:
public string SendCommand(RedisCommand command, params string[] args)
{
//请求头部格式, *<number of arguments>\r\n
const string headstr = "*{0}\r\n"
//参数信息 $<number of bytes of argument N>\r\n<argument data>\r\n
const string bulkstr = "${0}\r\n{1}\r\n"
var sb = new StringBuilder()
sb.AppendFormat(headstr, args.Length + 1)
var cmd = command.ToString()
sb.AppendFormat(bulkstr, cmd.Length, cmd)
foreach (var arg in args)
{
sb.AppendFormat(bulkstr, arg.Length, arg)
}
byte[] c = Encoding.UTF8.GetBytes(sb.ToString())
try
{
Connect()
socket.Send(c)
socket.Receive(ReceiveBuffer)
Close()
return ReadData()
}
catch (SocketException e)
{
Close()
}
return null
}
private string ReadData()
{
var data = Encoding.UTF8.GetString(ReceiveBuffer)
char c = data[0]
//错误消息检查。
if (c == '-') //异常处理。
throw new Exception(data)
//状态回复。
if (c == '+')
return data
return data
}
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