MQTT Vs AMQP Vs STOMP

A simple and clear blog entry on comparing three messaging protocols:
http://blogs.vmware.com/vfabric/2013/02/choosing-your-messaging-protocol-amqp-mqtt-or-stomp.html

Docker memo

Install Docker on Ubuntu 14.04 LTS

First update your packages:

> apt-get update

@Deprecated

Install docker-io package:

> apt-get -y install docker.io

> ln -sf /usr/bin/docker.io /usr/local/bin/docker

Configure the Docker service to run when the OS boots:

> update-rc.d docker.io defaults

You're done !

You can alternativly use Vagrant Docker provisionner.

Now you can install Docker-compose

> sudo apt-get -y install python-pip

> sudo pip install docker-compose

Remove old containers:

> docker ps -a | grep 'weeks ago' | awk '{print $1}' \

        | xargs --no-run-if-empty docker rm 

Add an insecure docker registry:

add the following line to /etc/default/docker:

DOCKER_OPTS="--insecure-registry  dregistry.myinsecreg.com"

Spring Vs Vanilla JEE (e.g. Wildfly)

A good "battle" around this topic:
https://news.ycombinator.com/item?id=9519773

JBoss port conflict

Running more than one JBoss instance in the same machine leads to port conflict. You can solve this problem by running the second instance by adding this parameter :

-Djboss.service.binding.set=ports-01

See more: http://www.eeblog.org/index.php/jboss-run-2-instances-in-the-same-environment-and-avoid-port-conflicts/

How to encrypt your Maven password (for Nexus access)

http://www.objis.com/formation-java/tutoriel-maven-securite-login-mot-de-passe-security-settings-xml.html

Recovering MS SQLServer 2008 password sa

http://v-consult.be/2011/05/26/recover-sa-password-microsoft-sql-server-2008-r2/

Java Memo

Initialise a list:

Immutable

List<String> people = Arrays.asList("me", "you");

Mutable

ArrayList<String> people = new ArrayList<>(Arrays.asList("me", "you"));

or use the double brace initialization:

ArrayList<String> people = new ArrayList<String>() {{
    add("Me");
    add("You");
}}