如何在运行时在 ServiceStack 中更改 CacheClients? [英] How to change CacheClients at runtime in ServiceStack?

问题描述

我想(可能通过应用程序/网络配置)在运行时更改我的 ServiceStack 应用程序中使用的缓存客户端.

I'd like (through app/web configuration perhaps) to change the cache client used in my ServiceStack application, during runtime.

例如，我目前有这个:

 container.Register<ICacheClient>(new MemoryCacheClient());

我想在运行时将其更改为 Redis ICacheClient 用法.如果我注册了两个容器(一个 Memory 和一个在 Redis 上)会怎样.是否可以在我的服务中通过这样的调用在运行时在容器之间切换:

I'd like at runtime to change this to a Redis ICacheClient usage. What if I had two containers registered (one Memory and on Redis). Is it possible to switch between containers at runtime in a call like this in my service:

    public object Get(FooRequest request)
    {
        string cacheKey = UrnId.CreateWithParts("Foo", "Bar");
        return RequestContext.ToOptimizedResultUsingCache(base.Cache, cacheKey, sCacheDuration, () =>
            {
                return TestRepository.Foos;
            });
    }

请注意，经过更多研究，如果您注册了多个 ICacheClient:

Note, after more research, if you have more than one ICacheClient registered:

        container.Register<IRedisClientsManager>(c => new PooledRedisClientManager("localhost:6379"));
        container.Register(c => c.Resolve<IRedisClientsManager>().GetCacheClient());
        container.Register<ICacheClient>(new MemoryCacheClient());

然后在您的服务中访问 base.Cache 将返回最近注册的 ICacheClient... 即:在上述情况下，MemoryCacheClient.

Then accessing base.Cache within your service will return the most recent ICacheClient that was registered... ie: in the case above, MemoryCacheClient.

因此，如果能够从服务中访问 Cache 对象，我只需要一种方法来从我注册的缓存中获取特定的 Cache，而我看不到其任何属性.

So with the ability to access the Cache object from within the service, I'd just need a way to get a particular Cache from my registered caches, which I can't see any property for.

推荐答案

执行这样的操作将允许您根据 Web 配置设置向容器注册不同的提供程序:

Doing something like this would allow you to register different providers with the container based on a web config setting:

var redisCacheString = ConfigurationManager.AppSettings["UseRedis"];
var useRedis = false;
if (!bool.TryParse(redisCacheString, out useRedis))
{
  container.Register<IRedisClientsManager>(c => new PooledRedisClientManager("localhost:6379"));
  container.Register(c => c.Resolve<IRedisClientsManager>().GetCacheClient());
}
else
{
  container.Register<ICacheClient>(new MemoryCacheClient());
}

希望有帮助！

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