AlexRogalskiy

apiVersion: apps/v1
kind: Deployment
metadata:
  name: myapp
  labels:
    app: myapp
spec:
  replicas: 3
  template:
    metadata:

AlexRogalskiy

Vagrant.configure("2") do |config|
  config.vm.box = "generic/ubuntu1904"

  # set the provider
  config.vm.provider "virtualbox"
  # configure the provider
  config.vm.provider "virtualbox" do |v|
    v.cpus = 4
    v.memory = 4096
  end

AlexRogalskiy

# A deployment ensures pod(s) are restarted on failure
apiVersion: apps/v1
kind: Deployment
metadata:
  name: memsql
spec:
  replicas: 1 # only create one pod (container)
  selector:
    matchLabels:
      app: memsql

AlexRogalskiy

FROM mysql:5 as sqldump
WORKDIR /home

# Copy required artifacts and source code
COPY initial.sql .
COPY java-program ./java-program
COPY sqldump.sh .

# Copy jdk11 and gradle from the gradle:jdk11 image
COPY --from=gradle:jdk11 /opt/java /opt/java

AlexRogalskiy

How to create an HTTPS certificate for localhost domains

This focuses on generating the certificates for loading local virtual hosts hosted on your computer, for development only.

Do not use self-signed certificates in production ! For online certificates, use Let's Encrypt instead (tutorial).

AlexRogalskiy

type below:

brew update
brew install redis

To have launchd start redis now and restart at login:

brew services start redis

AlexRogalskiy

// vim: syntax=sql

CREATE OR REPLACE FUNCTION create_constraint_if_not_exists (t_name text, c_name text, constraint_sql text)
  RETURNS void
AS
$BODY$
  BEGIN
    -- Look for our constraint
    IF NOT EXISTS (SELECT constraint_name
                   FROM information_schema.constraint_column_usage

AlexRogalskiy

import scala.annotation.tailrec

object ArraySort extends App {
  val array = Array(23, 4325, 4, 11, 34, 324, 65)

  def bubbleSort(array: Array[Int]): Array[Int] = {
    def swapElements(array: Array[Int]): Int = {
      var swapsCount = 0
      for (i ← 1 until array.length) {
        val leftEl = array(i - 1)

AlexRogalskiy

# ./ffmpeg_vp9_2pass.sh input.mp4 2M 96k 1920 60

set -x

input="$1"
bitrate="${2:-2M}"
audio_bitrate="${3:-96k}"
scale="'min(${4:-1920},iw)':'ih*$4/iw'"
fps="${5:-60}"

AlexRogalskiy

Symbol	Explanation	Hint
\/	Right-leaning Either	Split ways, go one way or the other
-\/	Left value of \/	- is on the left side
\/-	Right value of \/	- is on the right side
>>=	flatMap	shove result into
>>	flatMap(_ => ..)	shove into, but ignore the result
|@|	Applicatives into Tuple	Scream operator
|+|	Append via Monoid	+ was taken
`>	`	fa.map(_ => b)