Tech blog, projects and tutorials

Web Engineering, Mobile, IoT and DevOps (incl. virtualization)

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Getting started with Polymer 1.1.0 – Part 3

This post is a follow-up to Getting started with Polymer 1.1.0 - Part 1 and Part 2 and will continue with the implementation of more Polymer web component into the app. Google Cards The CardView  has been added to Android with API level 21 that corresponds to Android 5.0. CardViews extends the [crayon-5b0b8d3c23723805280632-i/]  class and lets you show information inside cards

By | 2017-01-29T10:31:55+00:00 Oktober 2nd, 2015|Internet and Web Engineering|1 Comment

Getting started with Polymer 1.1.0 – Part 2

This post is a follow-up to Getting started with Polymer 1.1.0 - Part 1 and will continue with the implementation of so called "paper components". The paper component library belongs to Polymer and is implementing Google Material Design. This component library will be utilized for the app we are building. First we are importing the necessary elements to display

By | 2017-01-29T10:32:00+00:00 September 23rd, 2015|Internet and Web Engineering|2 Comments

Conquering new frontiers – Amazon EC2

Starting from today, this webpage will be available through Amazon EC2, powered by the “WordPress by Bitnami (HVM)” and is now relying completely on nginx. Bitnami Wordpress Instance I recommend the plug in All-in-One WP Migration for a painless transfer. This plug in save me maybe hours in migration.

Microsoft IE6, IE7, IE8, IE9, IE10, IE11 and Edge

If you are in front end design and are even working for customers in the public sector, you have to most likely guarantee that the web page you are currently designing will be compatible to Microsoft Internet Explorer in all the multiple versions available. You may not need to work with IE6 or IE7, but the IE8 ("The Windows

Windows 10 – 0xC1900101 – 0x20017 error

I am using my Lenovo T420S now since more than four years. This notebook is still comparable to current machines that are now on sale. It is equipped with a I7 processor and 16GB of RAM. In addition I added two Samsung SSDs during the years. I haven´t found any significant better notebook of that quality level since

Solving performance issues with ESXi 6 (Gen8)

If you have installed to a newer version of ESXi on your Gen8 Micro Server and are now suffering from very low performance disk speed, try the following steps to downgrade to a former hpvsa-driver (scsi-hpvsa-5.5.0-88). Just follow these simple steps: Download the driver and unpack the archive named hpvsa-5.5.0-88.zip Stop all VMs that are currently running

Detecting PHP email spam scripts on your server

In this article I am describing how to identify PHP scripts that are being used for email spamming through a Postfix mail server on an Debian based server. I just recognized last week an unnormal high workload on my server, causing the fast-cgi PHP instances not working well anymore. There was a noticeable delivery of HTTP 500 error

Information about mail sending PHP scripts

To be enabled to gather information about PHP emailing scripts on your server, you can add two lines to your main php.ini: [crayon-5b0b8d3c2449b861464624/] Restart your webserver after changing the php.ini. First parameter is adding a "X-PHP-Originating-Script:" information to the mail header, stating the user name an script name sending the mail. The second one is