Faster Images using HTTP2 and Progressive JPEGs

tl;dr: Progressive images render faster on HTTP2, thus increasing perceived performance. Take control of progressive JPEG’s scan layers to show meaningful image content with only 25% of image data sent. Use HTTP2 Server Push for progressive JPEG scan layers to maximize rendering performance for key images.
We Have An Image Problem
Images make the world go round: they engage, enrage & encourage us. The web as we know it depends on images. This comes at a price: images make up ~65% of average total bytes per page and have a high correlation to page load time as well as the Speed Index. They also grow by ~200kb year after year. In short, images are heavy and make things slow.
Get Compressin’!
The best way to counter negative effects of loading image assets is image compression: using tools such as Kornel Lesiński‘s ImageOptim, which utilizes great libraries like mozjpeg and pngquant, we can


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MSSQL on Linux – the details

When it became known that Microsoft was going to port MSSQL to Linux, many sysadmins surely thought that it would end in catastrophe. Enterprise providers have not been brilliantly successful with Linux ports so far – trying to install (and configure) Oracle DB on a Linux server is one of the worst experiences known to an admin. With Microsoft, it looks about like this:

$ curl https://packages.microsoft.com/config/rhel/7/mssql-server.repo | sudo tee /etc/yum.repos.d/mssql-server.repo
$ sudo yum update
$ sudo yum install mssql-server

It’s astonishing but true – Microsoft really has figured out how to package software for Linux. o/

But what does MSSQL for Linux look like up close? Engineers from Adfinis SyGroup risked a glance behind the curtains.

One of the main credos for porting MSSQL to Linux is that the run-time behaviour does not change as compared to Windows. Applications should not even notice if a tux finds its way into the backend.

Right away, this begs


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Edit video in 4K for free with OpenShot 2.2

The future is Ultra HD, or 4K as it’s known to its friends. Ultra HD TVs and displays are slowly coming into the mainstream, and of course they’re being joined by 4K-capable cameras. But how can you edit that 4K video feed without having to splash out on expensive software? The answer lies with OpenShot 2.2, the free (and open source) video editor for Windows, Mac and Linux. It’s now capable of supporting 4K video editing, giving you all the tools you need to produce slick home video that looks great on your big-screen TV. OpenShot 2.2 opens with key… [Continue Reading]


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