People constantly ask about this, clearly without having found the
documentation that we do have about this. So we need to make it more
obvious:
- Simplify the setup documentation to emphasize the Hydra cache (which
is the only working one currently).
- Move the cache troubleshooting section to the top to make it more
obvious.
- Highlight a link to the troubleshooting section of the docs in the
README.
- Emphasize that there is more documentation than is linked in the
README.
- Add a section to the README that explicitly mentions cache issues, and
links to the corresponding sections of the docs.
