ASP.NET Core 2.0 Web API响应缓存

问题描述

我正在尝试使用"Microsoft.AspNetCore.ResponseCaching"包在Web api中实现响应缓存.

I am trying to implement response caching in my web api using the "Microsoft.AspNetCore.ResponseCaching" package.

我正在使用Postman来测试应用程序并验证标头等.

I am using Postman to test the application and validate headers etc.

使用指定的最大年龄生成正确的标头，但邮递员似乎从api请求响应，而不使用缓存.响应时间完全没有变化，如果我调试控制器，我会看到它每次都被请求击中.

The correct headers are generated with the specified max-age but postman seems to request the response from the api and not using the cache. The response time does not vary at all and if I debug the controller I can see that it gets hit by the request every time.

启动类ConfigureServices(以及其他内容):

Startup class ConfigureServices (along with other stuff):

services.AddResponseCaching();

启动类Configure(以及其他内容):

Startup class Configure (along with other stuff):

 app.UseResponseCaching();

 app.UseMvc();

控制器操作:

    [HttpGet("{employeeNr}", Name = EmployeeAction)]
    [ResponseCache(Duration = 50)]
    [Produces(typeof(EmployeeDto))]
    public async Task<IActionResult> GetEmployee(SpecificEmployeeParameters parameters)
    {
        if (!await _employeeRepository.EmployeeExists(parameters.EmployeeNr)) return NotFound();

        if (!_typeHelperService.TypeHasProperties<EmployeeDto>(parameters.Fields))
            return BadRequest();

        var entity = await _employeeRepository.GetEmployee(parameters.EmployeeNr);

        var result = Mapper.Map<EmployeeDto>(entity);
        return Ok(result.ShapeData(parameters.Fields));
    }

邮递员的响应标头:

cache-control →private,max-age=50
content-type →application/json; charset=utf-8
date →Wed, 30 Aug 2017 11:53:06 GMT

推荐答案

解决了该问题.上面的代码没问题！邮递员通过设置来阻止缓存.

Fixed the issue. The code above is alright!Postman was preventing caching by a setting.

要解决此问题，请转到邮递员设置:

To fix this behaviour go to Postman Settings:

General -> Headers -> Send no-cache header -> Set to "OFF"

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