A Custom Electronic Medical Record System for an Ophthalmology Clinic
Running in Production
English - September 06, 2021 04:00 - 1 hour - 83.6 MB - ★★★★★ - 8 ratingsTechnology News Tech News deployment elixir flask hosting node rubyonrails phoenix production python techstacks Homepage Download Apple Podcasts Google Podcasts Overcast Castro Pocket Casts RSS feed
Jason Swett goes over creating a medical app with Rails. It's hosted on AWS using Kubernetes and has been up and running since 2019.
In this episode of Running in Production, Jason Swett goes over building
an internal medical record system with Ruby on Rails. It’s hosted on AWS using
Kubernetes and it’s been up and running since 2019.
Jason talks about replacing a few 3rd party services with 1 custom solution,
using custom generators, embracing PORO, transitioning from Ansible and
individual servers to Kubernetes, making safe decisions while learning as you
deploy new things and much more.
Topics Include
1:14 – The dream is to replace 9 separate systems with 1 custom solution
3:02 – Deploying on day 1 and what exactly is an EMR?
6:20 – Motivation for choosing Ruby on Rails to build a medical system
10:39 – Infrastructure as code is important
13:36 – The app does scheduling and soon emails will be sent to patients
15:29 – Specific things the app does and how Rails helps Jason accomplish them
21:56 – Custom generators are used for different modules
25:11 – Every 5 seconds certain forms are auto-saved and a few gems that are being used
27:56 – Rails can only help you so much, then you’re kind of on your own
34:10 – Making a distinction between imperative and declarative code
36:36 – Server rendered templates with sprinkles of Javascript (StimulusJS)
43:53 – Looking into using Hotwire Turbo in the distant future
45:41 – Migrating to use Elasticsearch and using it over PostgreSQL’s full text search
47:49 – Using AWS for hosting and landing on using Kubernetes with EKS
52:57 – 5% of Jason’s brain is taken up at all times knowing he’s on-call
55:22 – Switching from individual servers with Ansible to Kubernetes
59:37 – Using eksctl and Helm to move towards infrastructure as code
1:06:12 – The deploy process from development to production with Kubernetes
1:09:53 – Using feature flags and code reviews
1:11:35 – Handling database migrations with a load balanced application
1:15:13 – A strategy for writing Jira tickets
1:17:53 – RDS snapshots are handling database backups
1:21:14 – Monitoring, alerting and the idea of “sharpening the saw”
1:25:47 – Best tips? Make safe decisions and improve skills such as reading documentation
1:30:44 – Check out Jason’s site at https://www.codewithjason.com/
Links
📄 References
https://twitter.com/dhh (Creator of Rails)
https://en.wikipedia.org/wiki/Electronic_data_interchange
Jason’s podcast where Nick was a guest talking about freelancing, Docker and Kubernetes
https://rtpg.co/2021/06/07/changes-checklist.html (Database migration steps)
https://nickjanetakis.com/blog/learning-a-new-web-framework-with-question-driven-development
https://www.codewithjason.com/best-programming-tips/
⚙️ Tech Stack
rails →
ruby →
ansible →
aws →
eks →
elasticache →
elasticsearch →
kubernetes →
nginx →
postgres →
rds →
redis →
s3 →
stimulusjs →
🛠 Libraries Used
https://github.com/mperham/sidekiq
https://github.com/heartcombo/simple_form
https://github.com/weaveworks/eksctl
https://helm.sh/
Support the Show
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you want to support the show, the best way to do it is to purchase one of my
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