kapkaev

$ redis-cli
> config set stop-writes-on-bgsave-error no

kapkaev

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

kapkaev

def findAvailablePort(): Int = {
    val socket = new ServerSocket(0)
    socket.setReuseAddress(true)
    val port = socket.getLocalPort
    socket.close()
    port
  }

kapkaev

#System Design Interview Cheatsheet

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

##Basic Steps

1. 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?

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

kapkaev

#!/usr/bin/ruby

require 'net/ssh'
require 'pp'

def fetch(host)
  data = []
  Net::SSH.start(host, 'virool') do |ssh|
    index_folders = ssh.exec!("ls -d /var/lib/kafka/*").split("\n")
    data = index_folders.flat_map do |ifolder|

kapkaev

require 'faraday'
require 'zlib'

module Faraday
  class Response::Gzip < Response::Middleware
    def on_complete(env)
      encoding = env[:response_headers]['content-encoding'].to_s.downcase
      case encoding
        when 'gzip'
          env[:body] = Zlib::GzipReader.new(StringIO.new(env[:body]), encoding: 'ASCII-8BIT').read

kapkaev

//   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.
//

kapkaev

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.

kapkaev

#sudo vim /Library/LaunchDaemons/io.redis.redis-server.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>Label</key>
	<string>io.redis.redis-server</string>
	<key>ProgramArguments</key>
	<array>