Assuming you can access to that DB from AEM (via java) you should be achieve it via custom auth handler Here is the sling doc: Apache Sling :: Form Based AuthenticationHandler                                     Apache Sling :: Authentication - AuthenticationHandler Here is the sample code: acs-aem-...

Apart from what is already mentioned by kautuksahni ,1. You can use -Apache httpd Tutorial: Introduction to Server Side Includes - Apache HTTP Server Version 2.4 - One good way but setup might take time. Can be cached and flushed on specific changes, not all pages2. Iparsys component in aem which wo...

1. Was the jar extracted completely?2. Java version?3. what do you see in error.log?

I don't think so you can do it.Best case, you can try to add a check on the sightly element where you add this class.Thanks

These domains would be registered on your Google cloud platformCheck this linkAuthentication and Authorization  |  Google Maps APIs Premium Plan  |  Google Developers  

To the best of my knowledge and experience with google map.You have to allow certain domains on your google map account. A map will only load on these pages (with whitelisted domains) else you would see it for 1-2 sec and then the above message would appear.Domains can be allowed like : localhost:80...

AFAIK,  it's the correct observation.You would probably have to add check in your @PostConstruct method Apache Sling :: Sling Models or HTL  (formerly known as Sightly)

Can you share the code snippet from TopNav.java ?

You don't modify configs in prod directly.Make that as part of code deployment, leverage run mode configs for it in AEMConfiguring OSGi Run Modes Thanks

I am not quite sure but looks it has to do with something with clientlib proxy. Check the allowProxy oncehttps://helpx.adobe.com/experience-manager/6-3/sites/developing/using/clientlibs.html#main-pars_title_8cedThanks