There's no need to always clear cache/cookies for the entire browser

We can do it per site. This is the instruction for Chrome. However I don't doubt Firefox/Edge will be behind.

For cookies:

Delete specific cookies

Delete cookies from a site

1. On your computer, open Chrome .
2. At the top right, click More   Settings .
3. Click Privacy and security  Cookies and other site data.
4. Click See all site data and permissions.
5. At the top right, search for the website's name.
6. To the right of the site, click Remove .
7. To confirm, click Clear.

For Cache:

1. Open the Website you want to clear in the cache
2. Press Ctrl + F5