A couple years ago Krupa filled up a whiteboard with boxes and arrows, diagramming what the AMO systems looked like. There was recently interest in reviving that diagram and seeing what the Marketplace systems would look like in the same style so I sat down and drew the diagrams below, one for the Marketplace and one for Payments.
A common aspect amongst the regions Firefox OS targets is a lack of dependable bandwidth. Mobile data (if available) can be slow and expensive, wi-fi connections are rare, and in-home internet completely absent. With the lack of regular or affordable connectivity, it’s easy for people to ignore device and app updates and instead opt to focus on downloading their content.
When we run ALTER statements on our big tables we have to plan ahead to keep from breaking whatever service is using the database. In MySQL, many times* a simple change to a column (say, from being a short varchar to being a text field) can read-lock the entire table for however long it takes to make the change. If you have a service using the table when you begin the query you’ll start eating into your downtime budget.
Jared, Stuart, and Andy recently spent some time focusing on one of the Marketplace’s biggest hurdles for new contributors: how do I get all these moving pieces set up and talking to each other?
This post is a celebration of finishing a migration off of Wordpress for this site and on to flat files, built by Jekyll from Markdown files. I’m definitely looking forward to writing more Markdown and fewer HTML tags.