olbboy

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

olbboy

# see How to Install Redis Server on CentOS 7 - http://linoxide.com/storage/install-redis-server-centos-7/

# --- Compiling ---
$ yum install gcc make tcl
$ REDIS_VER=3.2.3
$ wget http://download.redis.io/releases/redis-$REDIS_VER.tar.gz
$ tar xzvf redis-$REDIS_VER.tar.gz
$ cd redis-$REDIS_VER
$ make
$ make test

olbboy

Installing Node.js with nvm to Linux & macOS & WSL

A quick guide on how to setup Node.js development environment.

Install nvm for managing Node.js versions

nvm allows installing several versions of Node.js to the same system. Sometimes applications require a certain versions of Node.js to work. Having the flexibility of using specific versions can help.

1. Open new Terminal window.

olbboy

# Install qemu
apt-get update && apt-get install qemu -y
apt install qemu-utils
apt install qemu-system-x86

# Create disk image
qemu-img create -f raw windows10.img 16G

# Get virtio drivers
wget -O virtio-win.iso 'https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/archive-virtio/virtio-win-0.1.185-2/virtio-win-0.1.185.iso'

olbboy

sudo openssl genrsa -des3 -out server.key 1024
openssl req -new -key server.key -out server.csr
cp server.key server.key.old
openssl rsa -in server.key.old -out server.key
sudo openssl x509 -req -days 3650 -in server.csr -signkey server.key -out server.crt
sudo openssl pkcs12 -inkey server.key -in server.crt -export -out server.pkcs12
keytool -importkeystore -srckeystore server.pkcs12 -srcstoretype PKCS12 -destkeystore keystore
keytool -list -v -keystore keystore

java -cp /jetty-8.1.3/lib/jetty-util-8.1.3.v20120416.jar org.eclipse.jetty.util.security.Password password

olbboy

.
├── Quần nữ
│   ├── Quần lụa thường
│   ├── Quần váy
│   ├── Quần lửng
│   ├── Quần tico
│   ├── Quần trắng
│   ├── Quần trắng nữ
│   ├── Quần đen
│   ├── Quần liền tà

olbboy

const minute = 60;
const hour = minute * 60;
const day = hour * 24;
const week = day * 7;
const month = day * 30;
const year = day * 365;

/**
 * Convert a date to a relative time string, such as
 * "a minute ago", "in 2 hours", "yesterday", "3 months ago", etc.

olbboy

HAProxy and Let's Encrypt

HAProxy is a open-source TCP/HTTP load-balancing proxy server supporting native SSL, keep-alive, compression CLI, and other modern features.

Let’s Encrypt is a free, automated, and open certificate authority (CA), run for the public’s benefit. Let’s Encrypt is a service provided by the Internet Security Research Group (ISRG).

Concept

olbboy

// src/middlewares/flatten-response.js
function flattenArray(obj) {
  return obj.map(e => flatten(e));
}

function flattenData(obj) {
  return flatten(obj.data);
}

function flattenAttrs(obj) {

olbboy

title	author	date	source	notoc
LDAP Search Filter Cheatsheet	Jon LaBelle	January 4, 2021	https://jonlabelle.com/snippets/view/markdown/ldap-search-filter-cheatsheet	true

LDAP Search Filter Cheatsheet