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Google Datastore Namespaces

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The Google Datastore is one of the Google publicly available scallable No-SQL solution. The other is the BigTable  - which can be installed on a swarm of Compute Engine virtual machines. The Datastore is build on top of the BigTable. So with the BigTable you could get the raw performance, but you miss some goodies, like transactions and SQL like query language available with the Datastore. The Datastore terminology gets me confused. They introduce "Dataset" and "Namespace" - which is not immediately clear, and had me some issues till I figure it out. That is why started this post. From the welcome page of the Datastore project the terminology is defined as Concept Datastore Relational database Category of object Kind Table One object Entity Row Individual data for an object Property Field Unique ID for an object Key Primary key But the Dataset is not defined what it means in the documentation. Through trial and error I found out that the Dataset is the ...
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Back to teaching

When I was still a student at Sofia University, Bulgaria back in 1999 I got an assistant position within the Faculty of Mathematics and Informatics. It was so much involving and enjoyable for me that I went on and did it for 6 semesters up till I finished with my bachelor degree. This is not uncommon practice since the “students as teachers” tend to bring a lot of enthusiasm to the classroom. This was a very positive experience. It shaped and improved skills like talking in front of an audience, showing leadership, reaching out and inspiring the inner curiosity, feeling the audience with the most appropriate pace for delivering the content. Of course back then I did not do it with the aim of self improving. I did it for the fun and the prestige in the eyes of friends, colleagues and family that comes with it. I realize the above mentioned added values involved with such activity only later, when looking back and musing over it. And it was a lot of fun, especially after the kind of ...
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Google Datastore intro

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I have been getting updated on the Google Datastore for several months now. It seems the major promotions for it started back in 2008, or at least that is when the most videos on Google IO started to appear. It got some hype until 2012, and then no more promotions from Google - they focus now on mobile, web and material designs. Anyway, I've watched multiple time the following videos - and recommend them if you want to know more about scallable, sorted, distributed, persisted nosql solution "Datastore under the covers", 2008 talk.  The slides are a mess, but Ryann Barret makes a good introduction  to how the entities and inded are layed out, and how transactions work. "Scalable, Complex Apps on App Engine" 2009 talk Brett Slatkin presents solutions for complex datastructures  having in mind the limitations of the Datastore Other notables videos to checkot are: Google I/O 2010 - Next gen queries Google I/O 2011: More 9s Please: Under Th...
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