sbusso

package main

import (
	"context"
	"flag"
	"fmt"
	"io"
	"net"
	"net/http"
	"os"

sbusso

// Package main is a sample macOS-app-bundling program to demonstrate how to
// automate the process described in this tutorial:
//
// https://medium.com/@mattholt/packaging-a-go-application-for-macos-f7084b00f6b5
//
// Bundling the .app is the first thing it does, and creating the DMG is the
// second. Making the DMG is optional, and is only done if you provide
// the template DMG file, which you have to create beforehand.
//
// Example use:

sbusso

INTRO

Concurrency is a domain I have wanted to explore for a long time because the locks and the race conditions have always intimidated me. I recall somebody suggesting concurrency patterns in golang because they said "you share the data and not the variables".

Amused by that, I searched for "concurrency in golang" and bumped into this awesome slide by Rob Pike: https://talks.golang.org/2012/waza.slide#1 which does a great job of explaining channels, concurrency patterns and a mini-architecture of load-balancer (also explains the above one-liner).

Let's dig in:

Goroutines

sbusso

MicroService Proxy Gateway Solutions

Kong, Traefik, Caddy, Linkerd, Fabio, Vulcand, and Netflix Zuul seem to be the most common in microservice proxy/gateway solutions. Kubernetes Ingress is often a simple Ngnix, which is difficult to separate the popularity from other things.

Github Star Trend:

This is just a picture of this link from Feb

sbusso

http://stackoverflow.com/questions/22667401/postgres-json-data-type-rails-query
http://stackoverflow.com/questions/40702813/query-on-postgres-json-array-field-in-rails

#payload: [{"kind"=>"person"}]
Segment.where("payload @> ?", [{kind: "person"}].to_json)

#data: {"interest"=>["music", "movies", "programming"]}
Segment.where("data @> ?",  {"interest": ["music", "movies", "programming"]}.to_json)
Segment.where("data #>> '{interest, 1}' = 'movies' ")
Segment.where("jsonb_array_length(data->'interest') > 1")

sbusso

# coding: utf-8
import sys
import html2text
import clipboard
import webbrowser

webpage = clipboard.get()

text = sys.argv[1]

sbusso

#!/bin/bash
source ~/.bashrc

echo "Building"

# Build Go binary in Docker image
docker run --rm \
	-e "GOPATH=/go" \
	-e "CGO_ENABLED=0" \
	-e "GOOS=linux" \

sbusso

#!/bin/sh

mkdir -pv traefik && cd traefik
printf "version: '2' \n\
\n\
services: \n\
  traefik: \n\
    image: traefik \n\
    restart: always \n\
    ports: [ '80:80', '8080:8080' ] \n\

sbusso

create backup project

bundle exec backup generate:model --trigger my_backup --archives --storages='dropbox' --compressors='gzip' --notifiers='mail' --databases="postgresql"

dropbox api

https://www.dropbox.com/developers/apps

sbusso

#...
gem 'backup', require: false,
              github: 'kavu/backup',
              branch: 'bump_fog_version',
              ref: 'c3fd8e6eb4f464de1c8'
gem 'whenever', require: false
#...