Site

maximum number of site collections per content database

For Particular Requirement, client want to dedicate a database for a single site collection. When we create a site collection from central admin, site is placed automatically in any available content database. To prevent any other sites to be created on the particular content database, We can set maximum number of site collection on particular content database. read full article for details.

Save site as a template publishing site SharePoint 2013

We all know that SharePoint doesn’t support saving publishing sites as a template. I don’t recommend doing that anyway as the produced template will have errors and isn’t reliable to be used in production to create new sites off of. However, sometimes as a developer you need to save a publishing site as a template to see how SharePoint packages things. This can help you build your own custom web template which is a neat thing and replaces the need to save a publishing site as template.