使用flask，第二次send_file，以获得具有相同路径和名称的更改的文件-缓存问题？

from flask import Flask, send_file

app = Flask(__name__)

@app.after_request
def add_cache_control(response):
    response.headers['Cache-Control'] = 'no-cache, no-store, must-revalidate'
    response.headers['Pragma'] = 'no-cache'
    response.headers['Expires'] = '0'
    return response

@app.route('/download')
def download_file():
    # 处理文件逻辑
    file_path = '/path/to/file'
    return send_file(file_path)

if __name__ == '__main__':
    app.run()

import random
from flask import Flask, send_file

app = Flask(__name__)

@app.route('/download')
def download_file():
    # 处理文件逻辑
    file_path = '/path/to/file'
    random_param = random.randint(1, 9999)
    return send_file(file_path + '?param=' + str(random_param))

if __name__ == '__main__':
    app.run()

from flask import Flask, send_file

app = Flask(__name__)

@app.route('/download')
def download_file():
    # 处理文件逻辑
    file_path = '/path/to/file'
    file_version = 'v2'
    return send_file(file_path + '?version=' + file_version)

if __name__ == '__main__':
    app.run()