Day 2 is, of course, our day-to-day usage of the car. Day 1 can take a few hours or a few weeks, depending on how all sorts of things such as how different the new car is or how experienced we are as drivers. Day 1 in this metaphor would be the first few days of ownership, when we’re still figuring out which side of the car we put in fuel, how to set the radio for our favourite stations, and get to know how the engine sounds at different speeds. If we were buying a car then Day 0 would be everything from the moment we decided we wanted a new car through comparing models, arguing with sales representatives, getting financing for the car and finally walking out the door with the keys. This cycle is repeated whenever we want to upgrade or update the service and have a day 0 to 1 to 2 process for the new features. High level view of Day 0, Day 1, and Day 2 cycle At this point our solution is working in the production environment and we’re ready to solve any problems which might arise. Day 2 - This is the stage where our service is working properly and our customers are enjoying the fruits of our hard labour.In theory, Day 1 could take a few minutes, but since we’re responsible people, we’ll stretch Day 1 out a bit, spending time and making an effort to be sure that everything is working properly before moving on to… It’s the moment we click “deploy” and the solution gets pushed into the production environment. Day 1 - This is the moment the service goes live and can potentially start working.Day 0 - This is the initial design and development of the service, from the collection of business requirements, creating a development plan, creating the initial MVPs and all the way to the actual creation of the service (including, of course, testing it in the proper environments). What do I mean by this? During the lifecycle of developing new services, there are basically three stages, which we can metaphorically call “days”: Artist’s impression of the James Webb Space Telescope, ready for action! (NASA)įrom a Site Reliablity Engineer’s perspective, this marks the moment when Webb moves from Day-1 operations to Day-2 operations.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |