Even though the reading club on distributed graph data bases stopped I never really lost interest in management of big data and graph data. Due to the development of research grants and some new workers in our group I decided to create a new reading club. (The next and first meeting will be Thursday September …
Author: Rene
Graphity Server for social activity streams released (GPLv3)
It is almost 2 years over since I published my first ideas and works on graphity which is nowadays a collection of algorithms to support efficient storage and retrieval of more than 10k social activity streams per second. You know the typical application of twitter, facebook and co. Retrieve the most current status updates from your …
Aurelius Titan graph enables realtime querying with 2400 concurrent users on a distributed graph database!
Sorry to start with a conclusion first… To me Titan graph seems to be the egg-laying wool-milk-sow that people would dream of when working with graph data. Especially if one needs graph data in a web context and in real time. I will certainly try to free some time to check this out and get hands on. …
My ranked list of priorities for Backend Web Programming: Scalability > Maintainable code > performance
The redevelopment of metalcon is going on and so far I have been very concerned about performance and webscale. Due to the progress of Martin on his bachlor thesis we did a code review of the code to calculate Generalized Language Models with Kneser Ney Smoothing. Even though his code is a standalone (but very …
Comparison of open educational resources services to host your MOOC
This article on open and free platforms to host your MOOC belongs to the entire series: comparison of places to host your MOOC. As already mentioned there are only a few platforms which really belong to the category of open educational resources. The term is described in the Wikipedia article: Open educational resources as follows: …
Comparison of platforms and places to use to host your MOOC
As many of you know and voted (thanks for that) Steffen and I tried to get a MOOC fellowship in order to create a web science MOOC. Even though our application was not successful we decided that online teaching in the MOOC format is suitable for the web science lecture. With the structure from our …
Drug junkie steals my neo4j t-shirt out of my physical mailbox
Being at FOSDEM 20013 Peter from Neo4j asked my if I would like to get a neo4j shirt send to my home adress. We have to keep in mind that i just moved back to Koblenz from China. I did not only move to Koblenz but I moved to Koblenz Lützel. I knew from my …
Why would musicians use online social networking sites?
For the last 5 years I have been running metalcon an online social network for metal fans and metal bands. As written recently I have the the chance to rewrite the entire platform with a team of 6 programmers. This time we want to do it the correct why. Instead of Thinking of features right …
Video of FOSDEM talk finally online
I was visiting FOSDEM 2013 with Heinrich Hartmann and talking about related-work.net the video of this talk is finally online and of course I would like to share this with the community: The slides can be found here.
GWT + database connection in Servlet ContextListener – Auto Complete Video Tutorial Part 5
Finally we have all the basics that are needed for building an Autocomplete service and now comes the juicy part. From now on we are looking at how to make it fast and robust. In the current approach we open a new Data base connection for every HTTP request. This needs quite some time to …