My domain provider uses only A records with IP addresses for root domains and Heroku doesn't accept that. I was told to use an .htaccess file to point mydomain.com to www.mydomain.com which is linked with a CNAME record and secured with SSL on Heroku.
I have no idea how this works and according to the apache doc, using an htaccess file reduces the HTTP server's speed. Instead I should write the configuration inside a <Directory> block in the main server configuration file.
Has anyone any recommendations? If I have to use the <Directory> block, where can I find the main server config file?
You could use a Heroku add-on like PointDNS, where you can point your root domain to Heroku via PointDNS Nameservers.
For steps, follow: https://www.mirrorcommunications.com/blog/how-to-correctly-point-your-domain-to-heroku, Option #1