Add-ons Redis Cache By Xon 2.17.2

• Fix high availability support where css updates would be sent to a possible readonly replica instead of the writable instance

• Disable behavior which caused css.php to return a 404 on an invalid template.
• For the old behaviour of returning a HTTP 404 response, set this config.php option:
• PHP:

  $config['svForce404OnEmptyCss'] = true;

• High avaliability config default change:
  • Change default value for retry_reads_on_primary config option to true as this guards against unexpected replication delays
• Remove unexpected differences for XF2.2 and XF2.3 support (only tested on XF2.2)
• When displaying redis version, include the redis varaint type.
  • Known variants are keydb & dragonflydb.
  • Dragonflydb does not appear to support IO stats at the moment