CAUTION : At this day (2017-10-12), Drupal commerce is very young. Therefor you can start the development of your e-commerce site but you may have bugs and security issues.
Example 1 (for drupal 7)
Step 1. Add file brows
Disable cache for a custom page from route declaration.
If you want to disable cache for a custom controller (Custom module), You have no_cache option (YOUR_MODULE.routing.yml).
File : mymodule.routing.yml