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from opensuse/tumbleweed:latest
LABEL maintainer="Mahendra"

RUN zypper --non-interactive --quiet install --type pattern devel_C_C++
RUN zypper --non-interactive --quiet install libopenssl-devel libffi-devel bluez-devel tk-devel valgrind-devel libexpat-devel sqlite3-devel readline-devel readline-devel-32bit libbz2-devel libexpat-devel libbz2-devel readline-devel sqlite3-devel wget patterns-devel-python-devel_python3 tar gcc make

ENV VERSION="3.6.7"

RUN wget -P /usr/src https://www.python.org/ftp/python/${VERSION}/Python-${VERSION}.tar.xz && tar -xf /usr/src/Python-${VERSION}.tar.xz -C /usr/src/ && rm -rf /usr/src/Python-${VERSION}.tar.xz

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#!/bin/bash

echo "Starting database backup.."
pg_dump -Fc --no-acl --no-owner \
  <Database Name> \
  | gzip > "<dump name>-$(date +%Y%m%d%H%M%S).pgdump.gz"


echo "Backup completed.."

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#!/usr/bin/env python3

# example 1: brute force solution
def sum_of_powers_of_2_brute_force(power):
  # time complexity: O(n)
  return sum([pow(2, i) for i in range(power+1)])

def sum_of_powers_of_2(power):
  # time complexity: O(1)
  return pow(2, power+1) - 1

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user  nginx;
worker_processes  auto;
error_log  /var/log/nginx/error.log info;
pid        /var/run/nginx.pid;
events { worker_connections  1024; }
http {
        default_type  text/html;
        log_format  main  '$remote_addr -> $request     $status $body_bytes_sent bytes -> $upstream_addr';
        access_log  /var/log/nginx/access.log  main;

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System Design 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?

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#!/bin/sh

SESSION_NAME="big_red"

cd ~/Sites/within3/big_red

tmux has-session -t ${SESSION_NAME}

if [ $? != 0 ]
then

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FWIW: I didn't produce the content presented here (the outline from Edmond Lau's book). I've just copy-pasted it from somewhere over the Internet, but I cannot remember what exactly the original source is. I was also not able to find the author's name, so I cannot give him/her the proper credits.

---

Effective Engineer - Notes

• By Edmond Lau
• Highly Recommended 👍
• http://www.theeffectiveengineer.com/

What's an Effective Engineer?

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The Case For Go

• Iron.io: How We Went from 30 Servers to 2 with Go
• Go at Google: Language Design in the Service of Software Engineering
• Behind the Scenes: Big Data at Torbit
• pool.ntp.org DNS server in Go
• Juju at Canonical
• Go at bitly
• NSQ: realtime distributed message processing at scale

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Application.put_env(:elixir, :ansi_enabled, true)
IEx.configure(
 colors: [
   eval_result: [:cyan, :bright] ,
   eval_error: [[:red, :bright, "\n▶▶▶\n"]],
   eval_info: [:yellow, :bright ],
 ],
 default_prompt: [
   "\e[G", # cursor ⇒ column 1
    :blue, "%prefix", :yellow, "|", :blue, "%counter", " ", :yellow, "▶", :reset