分布式缓存

要利用分布式缓存，你必须引用其中一个可用的实现：

• Redis 的
• Sql server

例如，你将注册 Redis 实现如下：

public void ConfigureServices(IServiceCollection services)
{
    services.AddDistributedRedisCache(options =>
    {
        options.Configuration = "ServerAdress";
        options.InstanceName = "InstanceName";
    });
}

在需要的地方需要 IDistributedCache 依赖：

public class BooksController {
    private IDistributedCache distributedCache;

    public BooksController(IDistributedCache distributedCache) {
        this.distributedCache = distributedCache;
    }

    [HttpGet]
    public async Task<Books[]> GetAllBooks() {
        var serialized = this.distributedCache.GetStringAsync($"allbooks");
        Books[] books = null;
        if (string.IsNullOrEmpty(serialized)) {
            books = await Books.FetchAllAsync();
            this.distributedCache.SetStringAsync($"allbooks", JsonConvert.SerializeObject(books));
        } else {
            books = JsonConvert.DeserializeObject<Books[]>(serialized);
        }
        return books;
    }
}