centos virtualmin multiple php versions

https://techjourney.net/install-and-run-multiple-and-newer-5-4-or-5-5-php-versions-in-virtualmin/
https://www.webfoobar.com/index.php/node/45

test http requests

https://www.hurl.it/ , support oauth, get, post, put, custom headers,  etc...

Milligram - super small HTML UI framwerok

https://milligram.github.io/

Mobile app frameworks

http://ionicframework.com/  (angularjs,html5)
http://mobileangularui.com/ (bootstrap based)
https://framework7.io/ (material theme, ui components)
https://coronalabs.com/  (fot x10 times faster coding)
https://www.nativescript.org/  (native UI, JS - gera)
http://phonegap.com/

facebook sdk

SDK

https://developers.facebook.com/docs/javascript/quickstart/v2.5
https://developers.facebook.com/docs/javascript/examples
https://developers.facebook.com/docs/javascript/howto/jquery/v2.5

Post on user wall
http://stackoverflow.com/questions/2724977/using-facebook-graph-to-simply-post-a-wall-message-with-just-javascript
http://stackoverflow.com/questions/13810257/post-on-facebook-wall-with-javascript-sdk
https://gist.github.com/findjonmos/5777900

Get user profile data
http://stackoverflow.com/questions/5846752/getting-an-facebook-user-profile-data-with-javascript

mysql geo spatial clustering - mysql geo funkcijos

https://www.fromdual.com/mysql-spatial-functionality-points-of-interest-around-me
https://www.percona.com/blog/2013/10/21/using-the-new-mysql-spatial-functions-5-6-for-geo-enabled-applications/

MySQL Master Slave Database Replication

https://support.rackspace.com/how-to/set-up-mysql-master-slave-replication/
https://plusbryan.com/mysql-replication-without-downtime
http://www.webaugur.com/webdev/19-mysql-master-master-slave-s-database-replication.html
https://www.digitalocean.com/community/tutorials/how-to-set-up-master-slave-replication-in-mysql
https://www.digitalocean.com/community/tutorials/how-to-set-up-mysql-master-master-replication

https://www.digitalocean.com/community/tutorials/how-to-scale-web-applications-on-ubuntu-12-10