Berat Doğan beratdogan

Things I believe

This is a collection of the things I believe about software development. I have worked for years building backend and data processing systems, so read the below within that context.

Agree? Disagree? Feel free to let me know at @JanStette.

Fundamentals

Keep it simple, stupid. You ain't gonna need it.

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?

Below is the list of modern JS frameworks and almost frameworks – React, Vue, Angular, Ember and others.

All files were downloaded from https://cdnjs.com and named accordingly. Output from ls command is stripped out (irrelevant stuff)

As-is (minified)

$ ls -lhS
566K Jan 4 22:03 angular2.min.js

If you’re trying to delete a very large number of files at one time (I deleted a directory with 485,000+ today), you will probably run into this error:

/bin/rm: Argument list too long.

The problem is that when you type something like “rm -rf ”, the “” is replaced with a list of every matching file, like “rm -rf file1 file2 file3 file4” and so on. There is a reletively small buffer of memory allocated to storing this list of arguments and if it is filled up, the shell will not execute the program. To get around this problem, a lot of people will use the find command to find every file and pass them one-by-one to the “rm” command like this:

find . -type f -exec rm -v {} \;

My problem is that I needed to delete 500,000 files and it was taking way too long.

Originally posted at http://pastebin.com/BjD84BQ3

Trigger warning: mention of suicidal ideation

tl;dr: I burned out as a developer at Amazon at the end of my second year. I’ve since found a healthy and sustainable work-life balance and enjoy work again. I write this to A) raise awareness, especially for new-hires and their families, and B) help give hope and advice to people going through the same at Amazon or other companies.

Hello, world

There’s been no shortage of anecdotes, opinions, and rebuttals regarding Amazon’s corporate culture as of late. I write this not to capitalize on the latest news-feed fad, but to share what I had already written and promptly deleted. I didn’t think anyone would want to hear my story, but it’s apparent people are going through a similar experience and don’t have a voice.

I’m a Software Development Engineer II at Amazon; SDE II basically means a software developer with at least 2–3 years of industry experience. I started at Amazon as an SDE I.

	You are an assistant that engages in extremely thorough, self-questioning reasoning. Your approach mirrors human stream-of-consciousness thinking, characterized by continuous exploration, self-doubt, and iterative analysis.

	## Core Principles

	1. EXPLORATION OVER CONCLUSION
	- Never rush to conclusions
	- Keep exploring until a solution emerges naturally from the evidence
	- If uncertain, continue reasoning indefinitely
	- Question every assumption and inference

	add-type @"
	using System.Net;
	using System.Security.Cryptography.X509Certificates;
	public class TrustAllCertsPolicy : ICertificatePolicy {
	public bool CheckValidationResult(
	ServicePoint srvPoint, X509Certificate certificate,
	WebRequest request, int certificateProblem) {
	return true;
	}
	}

	#!/bin/bash
	# scp-speed-test.sh
	# Author: Alec Jacobson alecjacobsonATgmailDOTcom
	# http://www.alecjacobson.com/weblog/?p=635
	#
	# Test ssh connection speed by uploading and then downloading a 10000kB test
	# file (optionally user-specified size)
	#
	# Usage:
	# ./scp-speed-test.sh user@hostname [test file size in kBs]

	CREATE OR REPLACE FUNCTION notify_trigger() RETURNS trigger AS $$
	DECLARE
	channel_name varchar DEFAULT (TG_TABLE_NAME \|\| '_changes');
	BEGIN
	IF TG_OP = 'INSERT' THEN
	PERFORM pg_notify(channel_name, '{"id": "' \|\| NEW.id \|\| '"}');
	RETURN NEW;
	END IF;
	IF TG_OP = 'DELETE' THEN
	PERFORM pg_notify(channel_name, '{"id": "' \|\| OLD.id \|\| '"}');

	default['sshd']['sshd_config']['AuthenticationMethods'] = 'publickey,keyboard-interactive:pam'
	default['sshd']['sshd_config']['ChallengeResponseAuthentication'] = 'yes'
	default['sshd']['sshd_config']['PasswordAuthentication'] = 'no'