Tuan rkt2spc

Serialization

As all objects must be Serializable to be used as part of RDD operations in Spark, it can be difficult to work with libraries which do not implement these featuers.

Java Solutions

Simple Classes

For simple classes, it is easiest to make a wrapper interface that extends Serializable. This means that even though UnserializableObject cannot be serialized we can pass in the following object without any issue

public interface UnserializableWrapper extends Serializable {
 public UnserializableObject create(String parm1, String parm2);

title	slug	createdAt	language	preview
Unit testing Angular.js app with node.js, mocha, angular-mocks and jsdom	unit-testing-angular-js-app-with-node	2015-07-05T18:04:33Z	en	Majority of search result about unit testing Angular.js apps is about how to do it by using test frameworks that run the tests in a real browser. Even though it's great to be able to test your code in multiple platforms, in my opinion it creates a lot of boilerplate code and makes it hard to run the tests in, for instance a CI-server.

Testing Angular.js app headlessly with node.js + mocha

Lean unit tests with minimal setup

The standard names for indexes in PostgreSQL are:

{tablename}_{columnname(s)}_{suffix}

where the suffix is one of the following:

pkey for a Primary Key constraint;

key for a Unique constraint;

excl for an Exclusion constraint;

idx for any other kind of index;

auth with microservices

Authorization and Authentication are hard. when you only have to implement them once (as you do within a monolith) instead of over and over again, it makes the developer happy :-), and maybe leads to less implementation failures.

When you have a bunch of microservices, this is something that has to be considered.

Implement it once or in every microservice, or something in between?

How to setup Let's Encrypt for Nginx on Ubuntu 18.04 (including IPv6, HTTP/2 and A+ SLL rating)

Virtual hosts

Let's say you want to host domains first.com and second.com.

Create folders for their files:

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

Effective Engineer - Notes

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

What's an Effective Engineer?

On Good Taste

Linus Torvalds in an interview talked about the idea of good taste in code or what I like to call elegance. As one might expect from two slides meant to make a point during a talk, he omits a lot of details to keep it short and simple. This post digs into the specifics of his example (deleting an element from a list) and adds another example (inserting an element in a list) including working code.

Example from Linus

This is an example of removing an element from a singly-linked list. It's one of the first data structures you learn about when you start learning about computer science and programming. The reason it doesn't show particularly good taste is because we have that condition at the end where we take a different action depending on whether the element we want to remove is at the beginning of the list or somewhere in the middle.

![Bad taste](http://

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 March 2, 2019

Originally, I had included some other solution

	#!/bin/sh

	set -e
	set -x

	for package in $(npm -g outdated --parseable --depth=0 \| cut -d: -f3)
	do
	npm -g install "$package"
	done

	[Path]
	PathChanged=/etc/systemd/network/wg0.network
	PathChanged=/etc/systemd/network/wg0.netdev

	[Install]
	WantedBy=multi-user.target