Ildar kapkaev

VS Code Plugins and configuration tips

https://code.visualstudio.com/docs/setup/setup-overview

Plugins

Project manager https://marketplace.visualstudio.com/items?itemName=alefragnani.project-manager
Scala metals https://marketplace.visualstudio.com/items?itemName=scalameta.metals

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

Stores data elements based on an sequential, most commonly 0 based, index.
Based on tuples from set theory.

#System Design Interview Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

##Basic Steps

Clarify and agree on the scope of the system

User cases (description of sequences of events that, taken together, lead to a system doing something useful)
- Who is going to use it?
- How are they going to use it?

Introduction to Kafka

Kafka acts as a kind of write-ahead log (WAL) that records messages to a persistent store (disk) and allows subscribers to read and apply these changes to their own stores in a system appropriate time-frame.

Terminology:

Producers send messages to brokers
Consumers read messages from brokers
Messages are sent to a topic

	package util

	object Slug {
	def apply(input:String) = slugify(input)

	def slugify(input: String): String = {
	import java.text.Normalizer
	Normalizer.normalize(input, Normalizer.Form.NFD)
	.replaceAll("[^\\w\\s-]", "") // Remove all non-word, non-space or non-dash characters
	.replace('-', ' ') // Replace dashes with spaces

	// The contents of this file are subject to the Mozilla Public License
	// Version 1.1 (the "License"); you may not use this file except in
	// compliance with the License. You may obtain a copy of the License at
	// http://www.mozilla.org/MPL/
	//
	// Software distributed under the License is distributed on an "AS IS"
	// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
	// License for the specific language governing rights and limitations
	// under the License.
	//

	# See https://docs.oracle.com/javase/8/docs/technotes/tools/windows/java.html
	# See https://docs.oracle.com/javase/8/docs/technotes/guides/vm/performance-enhancements-7.html
	# See https://docs.oracle.com/javase/8/embedded/develop-apps-platforms/codecache.htm
	# See http://normanmaurer.me/blog_in_progress/2013/11/07/Inline-all-the-Things/
	# See http://stas-blogspot.blogspot.com.br/2011/07/most-complete-list-of-xx-options-for.html

	# -XX:+LogCompilation
	# -XX:+PrintInlining

	-Dfile.encoding=UTF-8

	# Ask for the user password
	# Script only works if sudo caches the password for a few minutes
	sudo true

	# Install kernel extra's to enable docker aufs support
	sudo apt-get update
	sudo apt-get -y install linux-image-extra-$(uname -r) apt-transport-https ca-certificates

	# Add Docker PPA and install latest version
	sudo apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D

	CREATE TABLE IF NOT EXISTS `country` (
	`id` int(11) NOT NULL AUTO_INCREMENT,
	`iso` char(2) NOT NULL,
	`name` varchar(80) NOT NULL,
	`nicename` varchar(80) NOT NULL,
	`iso3` char(3) DEFAULT NULL,
	`numcode` smallint(6) DEFAULT NULL,
	`phonecode` int(5) NOT NULL,
	PRIMARY KEY (`id`)
	) ENGINE=MyISAM DEFAULT CHARSET=latin1;

	[{:city=>"Ada", :region=>"OK", :dma_code=>657},
	{:city=>"Akron", :region=>"OH", :dma_code=>510},
	{:city=>"Albany", :region=>"GA", :dma_code=>525},
	{:city=>"Alexandria", :region=>"LA", :dma_code=>644},
	{:city=>"Alpena", :region=>"MI", :dma_code=>583},
	{:city=>"Altoona", :region=>"PA", :dma_code=>574},
	{:city=>"Amarillo", :region=>"TX", :dma_code=>634},
	{:city=>"Ames", :region=>"IA", :dma_code=>679},
	{:city=>"Anchorage", :region=>"AK", :dma_code=>743},
	{:city=>"Anderson", :region=>"SC", :dma_code=>567},