Redis Master/Slave 实践

vbfh

　　本次我们将模拟 Master(1) + Slave(4) 的场景，并通过ASP.NET WEB API进行数据的提交及查询，监控 Redis Master/Slave 数据分发情况，只大致概述，不会按照step by step的方式一一列举.
　　
　　API List:
　　[POST]:http://localhost:53964/api/persons
Accept:application/json ,Content-Type:application/json



{
"Id": 2,
"Name": "Leo.J.Liu"
}

　　
　　[GET]:http://localhost:53964/api/persons/1
Accept:application/json ,Content-Type:application/json



{
"Id": 2,
"Name": "Leo.J.Liu"
}

　　
　　AutoMapper 自动转换Request DTO 与 DomainEntity




private readonly IPersonService personService;
public PersonsController(IPersonService personService)
{
this.personService = personService;
}

　　



public HttpResponseMessage GetPerson(int id)
{
var person = personService.GetPersonById(id);
if (person == null)
{
var resp = new HttpResponseMessage(HttpStatusCode.NotFound)
{
Content = new StringContent(string.Format("No person with ID = {0}", id)),
ReasonPhrase = "Person ID Not Found"
};
throw new HttpResponseException(resp);
};
return Request.CreateResponse(HttpStatusCode.OK, person);
}

　　



public HttpResponseMessage AddPerson([FromBody] PersonRequestDto personDto)
{
Person person = Mapper.Map(personDto);
var persons = personService.AddPerson(person);
return Request.CreateResponse(HttpStatusCode.OK, persons);
}

Application_Start 中完成AutoMapper注册



public class AutoMapperConfig
{
public static void RegisterMappings()
{
Mapper.Initialize(c =>
{
c.CreateMap().ForMember(s=>s.UserAge,d=>d.MapFrom(e=>e.Age));
});
}
}

采用StackExchange.Redis 作为Redis的Client,其中(6379为Master,提供写操作),(6380~6382为Slave，提供查询操作)


public  class RedisService where T : new()
{
public static ConfigurationOptions QueryConfig = new ConfigurationOptions
{
EndPoints =
{
{ "localhost", 6380 },
{ "localhost", 6381 },
{ "localhost", 6382 }
},
};
public static ConfigurationOptions SaveConfig = new ConfigurationOptions
{
EndPoints =
{
{ "localhost", 6379 }
},
};
public static T Get(string type,string key)
{
ConnectionMultiplexer redis =
ConnectionMultiplexer.Connect(QueryConfig);
IDatabase db = redis.GetDatabase();
string value = db.StringGet(string.Format("{0}:{1}",type,key));
return JsonConvert.DeserializeObject(value);
}

public static bool Save(string type, string key, T reqDto)
{
ConnectionMultiplexer redis =
ConnectionMultiplexer.Connect(SaveConfig);
IDatabase db = redis.GetDatabase();
string json = JsonConvert.SerializeObject(reqDto);
return db.StringSet(string.Format("{0}:{1}", type, key), json);
}
}

SimpleInjector 作为Ioc Container


public static class SimpleInjectorWebApiInitializer
{
public static void Initialize()
{
var container = new Container();
InitializeContainer(container);
container.RegisterWebApiControllers(GlobalConfiguration.Configuration);
container.Verify();
GlobalConfiguration.Configuration.DependencyResolver =
new SimpleInjectorWebApiDependencyResolver(container);
}
private static void InitializeContainer(Container container)
{
container.Register();
container.Register();
}
}

　　



public class PersonRepository : IRepository
{
public List GetAll()
{
return RedisService.Get("persons",string.Empty);
}
public Person GetById(int id)
{
return RedisService.Get("persons",id.ToString());
}
public bool Add(Person reqDto)
{
return RedisService.Save("persons", reqDto.Id.ToString(), reqDto);
}
public bool Update(Person reqDto)
{
throw new NotImplementedException();
}
public bool Remove(Person reqDto)
{
throw new NotImplementedException();
}
}

　　
　　
Redis 配置介绍:
　　
　　Step1: 下载Redis
　　Step2: 分别创建如下图所示目录 data_1~data_4，redis_1.config~redis_4.config
　　data_1,redis_1.config 为Master 存储目录及配置文件
　　data_2～data_4,redis_2.config～ redis_4.config为Slave 存储目录及配置文件

　　
　　redis_2.config～ redis_4.config配置说明：
　　port:6380~6381
　　dir:./data_2/~./data_4/
　　slaveof localhost 6379


　　
　　Redis Desktop Manager 监控: