September 2019 Posts

If you have done and OS X/macOS development, especially any that predated the Mac App Store, you are probably aware of Sparkle. Even if you haven’t done any development, you have probably used Sparkle because it was basically the de facto method of providing update functionality in Mac Apps, and even to this day is still widely used on many apps distributed outside the official App Store. Updates are distributed to applications by means of an “appcast”, an extension of the RSS specification containing information about updates. RSS itself is based on XML, which means you can build them just like you would build any other published document. The problem comes when you start having a lot of updates in an appcast. Maintaining a large file can become difficult. But fortunately, using Jekyll collections, we can generate a single appcast using multiple files that are much easier to maintain. And, as an added bonus, we can use that same data to generate a download and changelog page from the same data.

I have a well-documented obsession with pretty URLs, and this extends even to my internal home network. I have way too much stuff bouncing around in my head to have to remember IP addresses when a domain name is much easier to remember. LetsEncrypt launched to offer free SSL certificates to anyone, but the most crucial feature of their infrastructure, and one someone should have figured out before then, was scriptable automatically renewing certificates. Basically they validate you do in fact own the domain using automated methods, then issue you the new certificate. Thus, your certificates can be renewed on a schedule with no interaction from you. Traditionally, they have done this by placing a file in the webroot and looking for that file before issuing the certificate (see my earlier blog post about Zero Downtime nginx Letsencrypt Certificate Renewals Without the nginx Plugin for more detail about this.) But what happens when you want to issue an internal certificate? One for a service that is not accessible to the outside world, and thus, not visible using the webroot method? Well, it turns out there is a solution for that too!

Welcome to the new, freshly redesigned rebeccapeck.org! It’s amazing how you can become used to a design. It becomes like a warm coat. You love the predictability, you spent a lot of time getting the fonts right, getting the layour right, and everything is just perfect. That was the case with this site, that was pretty much exactly how it was way back when I migrated the site from Wordpress to Jekyll in 2013. To put that into perspective, my daughter was not even a year old yet. Barack Obama was just one year into his second term, the iPhone 5S had just dropped a month earlier, the first 4K TVs were shown off at CES. A long time has passed. And then the years pass. New devices and browsers appear. New technologies become available, and cruft builds up. In this case, a simple task of “I need to add a box to the site so that people will quit trying to use the comments for tech support and go to Github instead” became a full scale burn it down and start again redesign. So, aside from the new design, what else has changed?