Olawale Adewoyin gamerwalt

description
4.1 Beast Mode

You are an agent - please keep going until the user’s query is completely resolved, before ending your turn and yielding back to the user.

Your thinking should be thorough and so it's fine if it's very long. However, avoid unnecessary repetition and verbosity. You should be concise, but thorough.

You MUST iterate and keep going until the problem is solved.

System Design 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?

GROKKING NOTES

I liked the way Grokking the coding interview organized problems into learnable patterns. However, the course is expensive and the majority of the time the problems are copy-pasted from leetcode. As the explanations on leetcode are usually just as good, the course really boils down to being a glorified curated list of leetcode problems.

So below I made a list of leetcode problems that are as close to grokking problems as possible.

Pattern: Sliding Window

#Steps to install latest Laravel, LEMP on AWS Ubuntu 16.4 version. This tutorial is the improvised verision of this tutorial on Digitalocean based on my experience.

Install PHP 7 on Ubuntu

Run the following commands in sequence.

sudo apt-get install -y language-pack-en-base
sudo LC_ALL=en_US.UTF-8 add-apt-repository ppa:ondrej/php
sudo apt-get update
sudo apt-get install zip unzip

	class User extends BaseModel implements Authenticatable, CanResetPassword, IAggregateRoot
	{
	use DomainEvents;

	protected $connection = 'benta';

	protected $table = 'users';

	protected $primaryKey = 'user_id';

	<?php

	class StatusGroup extends BaseModel
	{
	protected $connection = 'benta_tenant';

	protected $table = 'db_status_groups';

	protected $primaryKey = 'status_group_id';

	abstract class TenantBaseController extends Controller
	{
	/**
	* @var CommandBus
	*/
	public $commandBus;

	/**
	* @param \BentaCore\Infrastructure\Common\Commanding\CommandBus $commandBus
	*/

	if ($this->auth->guest()) {
	if ($request->ajax()) {
	return response('Unauthorized.', 401);
	} else {
	return redirect()->guest('signin');
	}
	}

	//get the current user
	$this->user = $this->auth->user();

	private function createUser($host, $databaseName, $username, $password)
	{
	$createUserQuery = "CREATE USER '$username'@'$host' IDENTIFIED BY '$password'";

	$this->runStatement($createUserQuery);

	$grantUserQuery = "GRANT SELECT, INSERT, UPDATE, EXECUTE, DELETE ON $databaseName.* TO '$username'@'$host' IDENTIFIED BY '$password'";

	$this->runStatement($grantUserQuery);
	}

	<?php

	namespace BentaCore\Services\Provisioners;

	use BentaCore\Services\Provisioners\IDatabaseProvisioner;
	use Carbon\Carbon;
	use DB;
	use Exception;
	use Illuminate\Contracts\Console\Kernel;
	use PDO;