It’s always been a good idea using HTTPS for forms, sending personal data through the web. For many smaller websites and blogs this was often to expensive and to complex to set up. Let’s Encrypt intends to change that.
If we want to secure our own LAMP server or provide web space for friends or customers we would usually use php-cgi and suexec to let the scripts execute with different users. With NginX the setup somewhat differs but with php-fpm pools we can achieve the same sort of additional security.
Mobile web traffic is on the rise. During the first half of 2015 in Europe, one-third of all the web traffic is caused by mobile devices. In Asia it was even half of all the traffic. As I result of that it becomes more and more important to provide responsive websites for all the different devices and display sizes. Ish (yet another viewport resizer) is a useful tool the check ones website against many different screen resolutions.
In my blog post from Sep. 2015 (Speeding up Nexus 7 (2012) Tablet after Lollipop upgrade) I evaluated several options to get the Nexus up to speed again even with Android 5 (Lollipop).
But even with the changes in place I still got a lot of lag and unresponsive apps. I considered a downgrade to 4.4 when I noticed that there is a Android M Firmware for the Nexus 7 on XDA-Developers.
Sometimes you have to push data using SCP/SFTP/SSH via a VPN connection on a customer server. Especially if Cisco VPN hardware is being used and the files are large, the transfer sometimes is stalled and fails even. This also happens with other hardware as well and may be because of a poor implementation of SACK. It might help to switch SACK of in the kernel network stack.
The NASA Solar Dynamics Observatory (SDO) captures images of our Sun in 10 different wave lengths. The results are spectacular pictures showing flares and all sorts of magnetic explosions. Now these pictures had been merged into a breath taking 30 minutes time laps video.