Lazy weekend
This weekend was a lazy one. My girlfriend visited me, so I had not much time playing round with all of this software stuff. Another reason for my laziness was Guitar Hero 3 - Legends of Rock. I was first introduced to this game by a friend last saturday. Instead of playing cards we played a little guitar hero on Xbox 360. Next morning I decided to get my own copy of this came. Fortunately the game is available for Mac too so I hadn't not to by a Xbox 360 or PS3.
But I already spent a little time on playing around with Tapestry 5 on my little project. Quit a nice piece of software, but quite some hurdles to get into it. The trivial examples work quite well but I still have some troubles getting my ideas working. But I guess my years of experience are standing in my way now, because I am quite aware of what I am wanting to achieve ...
Maybe this week I have some time to investigate Tapestry 5 more in detail.
Still messing around with “ETag” and “Last-Modified”
Stating with this whole website performance an ETag topic opened pandoras box. It's a real mess and lame compromises all over the place. But I have to admit that the whole thing is not as easy as I expected it to be.
Anyway ... today I had a nice discussion with a colleague about this topic. He's a senior front-end developer. This means he is a real pro in HTML, CSS, Java-Script and stuff like this and he's the one who showed me the whole Yahoo! performance stuff. After this discussion I wanted to check some things out in detail.
Moved the Blog
Nothing is more constant lik change. I decided to move my blog to a different provider and a different blog system. So welcome my new old blog with almost no entries here at
So, I discovered that my provider has offered my the possibility to create a blog on an existing account, so i decided to consolidate my resources while the work is still small, so here we are. The weather is fine and I was lazy in the last week - too many web 2.0 stuff 
, so I am now taking a run around my hometown Finkenwerder which is a district of the nice city of Hamburg.
Hibernating JScience Measurements
Lately I discovered that nice little science API JScience, which is the reference implementation for the JSR-275. So I decided to use it on a little fun project I am currently working at. 30 minutes later I had stuffed the JAR into my local maven repository, added it to the POM file and integrated into my data model, when I realized that the values had to be stored into the database ...
An ETag is not about aliens
So what is this ETag thing. I am working since 1998 in the web business but I came across ETags some weeks ago when some of my customers starting to worry about their perfomace. Don't get me wrong, out apllication worked - as always - fine, but some pages where slower as the equivalent pages at the websites of their competitors. We checked our monitoring data, it's always good to know of the webstite performed on yesterday, yesterweek or yestermonth, but were unable to find some issues. So we went from the server to the protocol and the client and checked some static and dynamic pages. As I was taking a closer look at a static webpage I stumbled over a HTTP header which I didn't know: ETag.
Erstes Posting
Nach dem Besuch der next08 habe ich wieder total Lust diese ganzen Web 2.0 Sachen auszuprobieren. Vielleicht wird mein Leben ja langsam wichtig genug um damit auch andere Leute zu langweilen 
Aber um es etwas interessanter zu machen werde ich das Ganze wohl in englischer Sprache abfassen. Da ist die Zielgruppe einfach größer, werden halt vornehmlich technische Themen werden. But I guess there may be some german posts as well ...