Net核心自定义响应缓存

using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;

public class Startup
{
    public void ConfigureServices(IServiceCollection services)
    {
        services.AddControllersWithViews();
    }

    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    {
        if (env.IsDevelopment())
        {
            app.UseDeveloperExceptionPage();
        }
        else
        {
            app.UseExceptionHandler("/Home/Error");
            app.UseHsts();
        }

        app.UseHttpsRedirection();
        app.UseStaticFiles();

        app.UseRouting();

        app.UseAuthorization();

        app.UseEndpoints(endpoints =>
        {
            endpoints.MapControllerRoute(
                name: "default",
                pattern: "{controller=Home}/{action=Index}/{id?}");
        });

        // 自定义响应缓存中间件
        app.Use(async (context, next) =>
        {
            if (context.Request.Path.StartsWithSegments("/api"))
            {
                var cacheKey = $"cache_{context.Request.Path}_{context.Request.QueryString}";
                var cachedResponse = context.Response.Body;

                if (context.Cache.TryGetValue(cacheKey, out var cachedBody))
                {
                    context.Response.Body = cachedBody;
                    return;
                }

                await next();

                if (context.Response.StatusCode == 200)
                {
                    context.Cache.Set(cacheKey, cachedResponse);
                }
            }
            else
            {
                await next();
            }
        });
    }
}