you have to look how it works in forum. there are some lines in controllers/topic.php for this, like this who looks like adding a value to a field in table forum_topics:

//update topic's view count        $topicDto->viewCount += 1;

and of curse you need you db entry 

`viewCount` int(11) NOT NULL default '0',

and the output in template, should be easy to implement now

What code to implement on db and blogs template...? thank you