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Hinnerk Haardt
Works at HIT Information-Control GmbH
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Hinnerk Haardt

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Zarafas innerste Geheimnisse:

session = OpenECSession(username, '', 'file:///var/run/zarafa')
GetDefaultStore(session)
identity = session.QueryIdentity()

Ohne "GetDefaultStore" funktioniert QueryIdentity() nicht. Das bedeutet, dass irgendwo irgendein State geändert wird. Wo und welcher State, bleibt das Geheimnis der Entwickler von Zarafa.

Oder weiss das hier zufällig jemand? +Felix Kronlage +Robert Sander 
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Hinnerk Haardt

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Unerwartetes Ende der Besprechung …
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Die beste IDE der Welt unterstützt jetzt auch Docker :)
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As developers, we can all agree that shipping code should be easy. Whether deploying to a local testing or staging server, our laptop, or a Unix box halfway around the world, builds should be portable, predictable and (mostly) painless. But sometimes it seems like shipping code is half the ...
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Ihr erinnert Euch an die Warnungen vor einem Stromausfall, der durch die Sonnenfinsternis verursacht werden sollte? Nun, es stellt sich heraus, dass  der Handel mit Strom jeden Tag größere – und damit gefährlichere – Schwankungen verursacht, als die Sonnenfinsternis.
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Sonnenfinsternis 2015 - Was passierte im Stromnetz? tl;dr: Die Sonnenfinsternis hatte keinen großen Einfluss auf das Stromnetz. Genauer gesagt: Das Europäische Verbundnetz war sogar stabiler als sonst. Der Stromhandel verursacht erheblich größere Schwankungen — und zwar täglich.
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Code is not the asset – code is the cost.
Software gets complicated fast. Most of good architecture and design practise is about trying to slow the rate at which software gets complicated. You can’t stop it, it’s a form of entropy. You can only slow it down and do your level best to stay on top of things. One way to manage the mess is to maximise the likelihood that everyone knows what’s going on in the codebase. This requires two things: consistency and replaceability. Consistency im...
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Hinnerk Haardt

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Datenbanken abschaffen!
 »Databases are global, shared, mutable state. That’s the way it has been since the 1960s, and no amount of NoSQL has changed that. However, most self-respecting developers have got rid of mutable global variables in their code long ago. So why do we tolerate databases as they are?«
This is an edited and expanded transcript of a talk I gave at Strange Loop 2014. The video recording (embedded below) has been watched over 8,000 times. For those of you who prefer reading, I thoug...
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Eine sehr spannende Studie zeigt, dass Gewalt keine Lösung ist.
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Schön zu lesende Beschreibung von zwei klassische Beispielen, wieso Kryptographie eine sehr subtile Kunst ist.
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Lea Kissner originally shared:
 
Moxie posted several entertaining examples of "cryptographic doom". His principle boils down to "crypto is hard, implementing crypto correctly is hard, things break in hilarious ways":
When it comes to designing secure protocols, I have a principle that goes like this: if you have to perform any cryptographic operation before verifying the MAC on a message you’ve received, it will somehow inevitably lead to doom.

The fact that these attacks make me giggle madly probably tells you quite a lot about my sense of humour.
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Mit Go Templates maximalen Nutzen aus 'docker inspect -f'  ziehen.
Most Docker users are aware of the docker inspect command which is used to get metadata on a container or image, and may have used the -f argument to pull out some specific data, for example using docker inspect -f {{.IPAddress}} to get a container’s IP Address. However, a lot of users seem confused by the syntax of this feature and very few people take full advantage of it (most people seem to pipe the output through grep, which is …
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Artikel von Daniel Walsh sind normalerweise lesenswert. In diesem geht es um User namespaces und Seccomp in Docker.
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Learn about the next steps in securing Docker containers, and what is being done to make sure that containers are safe for production use.
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Xen mit Docker… warum nur?
I'm excited to be able to share with you a preview of our new XenServer support for Docker and Container Management. Downloads can be found on the preview page, read on for installation instructions and more details.Today many Docker applications run in containers within VMs hosted on hypervisors such as XenServer and other distributions of Xen. Th...
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"Go away or I will replace you with a very small shell script" (Ein paar Gedanken zum Thema DevOps)

Vortrag auf der GUUG FFG 2015 in Stuttgart

#guug   #ffg2015   #ffg  
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japanlove: Torii Gate by mrhayata on Flickr.
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japanlove: “ Torii Gate by mrhayata on Flickr. ”

unthsh: Thanks Oxford Comma, you’re the best.
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unthsh: “Thanks Oxford Comma, you’re the best. ”

Mark Bernstein: Dan Frommer’s Ten Tips
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Dan Frommer's Ten Tips. Some years ago I wrote ten tips for weblog writers for A List Apart. It turned out to be one of their most popul