What about headless chrome and some cron jobs to run tasks for you. It'd be similar to selenium. But, on a headless browser. There are also some scraping services that let you get data on a set interval with a phantomjs scraper. I have one that uses apify and then notifies a zapier hook on success and then zapier posts to my google sheet. My webapp then calls a GCP instance REST API endpoint which internally calls the google spreadsheet through an exposed api, cleans the data and sends back to the webapp.