Donald Rumsfeld – There are known knowns

2020-06-12

There are known knowns – there are things we know we know. We also know there are known unknowns – that is to say we know there are some things we do not know. But there are also unknown unknowns – there are things we do not know we don’t know.“ – Donald Rumsfeld, 2002-02-12

Marcel Achard – New Ideas

2020-05-31

J’ai des tas d’idées brillantes et nouvelles, mais les brillantes ne sont pas nouvelles et les nouvelles ne sont pas brillantes. – Marcel Achard I have lots of new and brilliant ideas, but the brilliant ones are not new, and the new ones are not brilliant.

Kurt Tucholsky – Menschheitsprobleme

2020-05-31

Es ist ein großer Irrtum, daß Menschheits-Probleme “gelöst” werden. Sie werden von einer gelangweilten Menschheit liegen gelassen. – Kurt Tucholsky, “Die Weltbühne”, 24.1.1928, S. 133 It’s a big fallacy that mankinds’s problems will be “solved”. They will be left behind by a bored mankind.

Dynamic DNS with AWS Route 53 – the Good, the Bad and the Ugly

2020-05-03

What to do with an AWS account, an own domain and the desire to fiddle with some AWS services? One obvious thing is to abandon dynamic DNS services like FreeDNS and host the names of two DSL routers (a Fritz!Box 9490 and a Fritz!Box 3270) in Route 53. So what are the options? …more

Fritz!Box DynDNS – some gory details

2020-02-29

Usually a Fritz!Box can use existing Dynamic DNS services like DynDNS or No-IP without problems. It supports a bunch of predefined services but you can also specify a custom URL with some placeholders. The “fun” started when/if I wanted to implement a custom DynDNS service for my own domain and had to find out some non-obvious things. …more

Setup a new PostgreSQL database on AWS-RDS

2020-02-16

There are some differences between self-hosted Postgres and an AWS-RDS instance. Show how to setup a new database with a separate “owner” user. …more

Date Gettime

2020-02-03

Bad code with currentMillis

Boolean to String

2020-02-03

Bad code with Boolean

Useless throwing Exceptions

2020-02-03

Bad code with try/throw/catch

Synchronized New Object

2020-02-02

My favorite “baddest piece of code encountered” is this one: …more