What the Military Taught Me About DevOps Graphic Recording
I presented my What the Military Taught Me About DevOps talk to a large crowd at DevOpsDays Toronto 2018. Off to the side of the stage was Ashton from Minds Eye Creative. A beautiful piece of art was created from my talk and I cannot thank the DevOpsDays Toronto organizers enough for it.
I like to remind everyone this time of year that, unless they have people’s lives in their hands, you have to keep things in perspective.
Chances are you’re in a terminal on a laptop on planet earth which is but one watery orb circling a star as it hurtles through the Milky Way which is but one of many galaxies moving across the universe. Try not to take things too seriously....
DNS is Awesome
There are so many cool things about DNS one drawing is not going to do it justice. Please let this drawing serve as an inspiration to learn more about DNS.
DNS is awesome because it allows you to have a full blown CDN for next to nothing. All you have to do is create a CNAME that points to Amazon S3.
DIY Buffer using IFTTT
Update: As of 2019-12-10, it would appear that due to rate limits and other service changes, this process is now broken. I leave this here in memory of the over three years of exemplary service IFTTT has given me.
Buffer is a great tool for scheduling and posting content to social media. But, it costs money to do any sort of real sharing. I prefer to share more content from others than I do my own....
Hypertext Transport Protocol v2 (HTTP/2) is here and is being implemented at an ever quickening pace. HTTP/2 is going to speed up the web and enable new capabilities. There is a lot that stays the same but there are some significant changes coming. In educating myself I decided to illustrate some of the changes in HTTP/2:
The first thing to keep in mind is the primary reason for HTTP/2 even being a protocol is to improve performance (and not necessarily security)....
The Open Systems Interconnection model (OSI model) defines a concept where every function of a computing system resides at one of its seven levels. When people say, “Layer 3 routing” or “L7 load balancing” they are referring to the OSI Model.
It is an incredibly handy tool for troubleshooting as it reminds you to check the system at each layer. The official documentation on the OSI Model can be found on the ISO site (yes, that’s confusing)....
PHP Memory Directives Relationship
I recently had to templatize PHP configurations using Ansible and Jinja2. I had to do some research to ensure that the memory directives that were being defined were actually valid. The three directives I was tinkering with were:
memory_limit upload_max_filesize post_max_size These three directives values’ are actually tied together. memory_limit is the max amount of memory that a script can consume. upload_max_filesize defines the largest size a file upload can be....