Про раздел Links

В еженедельном формате я буду публиковать ссылки, которые мне пригодились, в первую очередь чтобы разгребать все, что попадает в мой backlog, но также и делиться с читателями.

Также мне очень нравится подход, которому я научился у американцев, считать неделями. В году ведь всего 52 недели и каждая пронумерована, так довольно прикольно индексировать.

2020 week 22 links

• Design your service for .GOV.UK patterns
• Colored photoes blog
• Sideberry Firefox Extension
• Amazon Container OS
• Create custom macOS menu bar apps using Hammerspoon / Chris Zarate

Я люблю время от времени тыкать палочкой в различные редакторы и пробовать их в своей работе.

Сейчас появилось очень много интересных и быстрых штук типа Sublime, Atom, LightTable. Ребята из Jetbrains создают отличные (но медленные и прожорливые) IDE типа WebStorm, RubyMine, PyCharm.

• Телевизионная журналистика
• Статья на Habr про средства консоли chrome console
• http://kamalmarhubi.com/blog/2015/08/27/what-even-is-a-kubelet/
• https://github.com/kelseyhightower/kubernetes-the-hard-way

Ruby has so much inspiration from the Smalltalk!

Here are my findings:

• Inspect method actually opens an inspector for the object in Smalltalk, Ruby just tries to show object’s guts
• collect, select are methods for collections from the Smalltalk
• do for collection in Smalltalk is the same what’s in Ruby each
• block parameter in «pipes» in Ruby is very similar to Smalltalk
• super is calling the superclass parent method
• initialize is a constructor name for the class in Smalltalk
• keywords concept has slightly different syntax, but the meaning is the same
• « method
• Ruby object.send method = Smaltalk object perform: method
• the self keyword means the same in Smalltalk and Ruby

It’s quite simple to increase PVC size since K8s 1.11

kubectl describe pvc and find your storage class.

Name: jenkins
Namespace: jenkins
StorageClass: jenkins-gp2
Status: Bound
Volume: pvc-473e3dbf-b759-11e9-9cbc-02a7fb0b6cca
Labels: app.kubernetes.io/component=jenkins-master
app.kubernetes.io/instance=jenkins
app.kubernetes.io/managed-by=Tiller
app.kubernetes.io/name=jenkins
helm.sh/chart=jenkins-1.3.6
Annotations: pv.kubernetes.io/bind-completed: yes
pv.kubernetes.io/bound-by-controller: yes
volume.beta.kubernetes.io/storage-provisioner: kubernetes.io/aws-ebs
Finalizers: [kubernetes.io/pvc-protection]
Capacity: 16Gi
Access Modes: RWO
VolumeMode: Filesystem
Mounted By: jenkins-6b5c9bcbbb-gr2l5
Events:

kubectl edit storageclass jenkins-gp2 add the following to your storage class

allowVolumeExpansion: true

kubectl edit pvc jenkins

In the age of Kubernetes and all this fancy stuff, I decided to make something really simple and as static as possible. The modern, cutting-edge tech stack.

This is a story about https://it-premium.com.ua reincarnation featured with responsiveness and saving all the functionality it had before. Though it wasn’t a simple, but very interesting journey.

Here are the specs I wanted to preserve:

• Multilanguage support, due to Ukrainian language law enforcement we had to introduce one more supported language among English and Russian
• PDF dynamic generation based on what user was chosen
• Dynamic tariff calculations with dependencies on the services of user’s choice
• Easy data management. It shouldn’t be hard to fix some figures by someone else.
• Easy localization management.

The old stack

At first, it was a Ruby on Rails 4.2 application and it used the following gems:

• Create a Jenkins job for mobile application internal share to the Google Play Store
• Create a Jenkins job for mobile application automated release to the Google Play Store
• Restore Jenkins jobs for the COBOL build with Oracle 11.2 and Sybase 15.5 on the Solaris Sparc, AIX and HP-UX machines
• Debug a performance issue in the distributed power management software.
• Create helm script for the product deployment to the Central K8S cluster into staging and prod namespaces and talk to DynamoDB and put assets to the S3
• Setup Prometheus + Grafana for the performance monitoring
• Setup gradle builds for Java Spring and NodeJS
• Extend XenServer with two new HDDs for a capacity and much more.

This is really my little timesaver because you know, a lot of meetings happen when you work remotely.
Works best with Alfred 4 using mapped hotkey.

tell application "Calendar"
	tell calendar "[email protected]"
		set itemLocation to location of first event where its start date ≤ (current date) + 10 * minutes and end date ≥ (current date)
		if itemLocation contains "zoom.us" then tell application "Finder" to open location itemLocation
	end tell
end tell

This is really my little timesaver because you know, a lot of meetings happen when you work remotely.

The bad thing about Rails is that by default it suggests using own messy design patterns like fat models. I mean all these callbacks in AR, observers and everything that is good for a simple blog but fails for a big application.

You have to use a very little part of Rails to apply DDD concepts.