The document discusses a mobile app that allows users to see posts and events near their location. It uses geolocation to determine the user's position and queries a database to find other posts and events within a certain radius. The technical details mention it uses technologies like PHP, MySQL, Solr, jQuery and Twitter Bootstrap for the front-end, with hosting on Amazon EC2 and S3 and deployment through GitHub, Jenkins and other tools.

1. what’s happening near you

2. How it started
navigator.geolocation.getCurrentPosition();

3. $long_min=$long - $radius / abs(cos(deg2rad($lat)) * 69);
$long_max=$long + $radius / abs(cos(deg2rad($lat)) * 69);
$lat_min=$lat - ($radius / 69);
$lat_max=$lat + ($radius / 69);
SELECT * FROM `posts`
WHERE `lat`
BETWEEN '".$lat_min."' AND '".$lat_max."'
AND `long`
BETWEEN '".$lng_min."' AND '".$lng_max."'

5. ...blah blah platforms blah blah open
blah blah generative networks

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14. Front end: jQuery, jQuery UI, and jQuery Mobile. Twitter’s Bootstrap.
Environment: PHP using Zend and MySQL.
Search: Solr.
Read API: Solr.
Location: JavaScript API and Geocoding API.
Fonts: Google. Cabin is the primary typeface.
Deployment: github, dbdeploy and Jenkins.
Hosting: EC2 and S3. We also cache PHP using APC.
Analytics: Chartbeat and Google Analytics.
Media: embed.ly.
Content: People.
Moderation: People.