I have the main page that loaded very long time (6-10 seconds) because it contains a form with captcha. The performance of the webapp + mysql (venus) is very bad... Drupal does not cache pages with a captcha, so recreate a page and does not load from redis cache. How best to resolve this performance issue?
Sorry for my English.
You can enable Redis in Azure Web Apps. Please see the following guide for more information: https://azure.microsoft.com/en-us/documentation/articles/web-sites-connect-to-redis-using-memcache-protocol/
If you have a slow start up time only on the first request, you can try enabling always on. To enable always on: https://azure.microsoft.com/en-us/documentation/articles/web-sites-configure/.
For further speed up tips, please see this blog entry: https://azure.microsoft.com/en-us/blog/10-ways-to-speed-up-your-wordpress-site-on-azure-websites/. Although it is targeted to Wordpress the same tips are applicable to Drupal.
