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DekarLab

Blog about big data processing and data-driven investments

  • DATA PROCESSING
  • INVESTMENTS
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  • INDEX TRACKING (ETF)
  • PDI/R PLUGIN
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DekarLab

Latest Posts

Book notes – Building Microservices: Designing Fine-Grained Systems

23. October 2017 karden BOOKS, DATA PROCESSING

You can buy this book from amazon.de.
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Book notes – Designing Data-Intensive Applications: The Big Ideas Behind Reliable, Scalable, and Maintainable Systems

23. October 2017 karden BOOKS, DATA PROCESSING

You can buy this book from amazon.de.
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Why it is a bad idea to stream data back from HDFS into Kafka

2. October 2017 karden DATA PROCESSING

I think, an idea to stream data back from HDFS into some streaming component, like Kafka, is coming from concept of Enterprise Service Bus (ESB). But after some thoughts, I have come to conclusion, that this concept is not useful in Big Data world.
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Microservices vs service oriented architecture (SOA) and how containers change the rules of the game

19. September 2017 karden DATA PROCESSING

Microservices approach gains recently popularity. Some time ago service oriented architecture (SOA) approach was very popular. But what is the difference?

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Schema evolution and backward and forward compatibility for data in data lakes

10. September 2017 karden DATA PROCESSING

We have discussed before the format for clean and derived data in data lakes. One of the popular formats for this goal is an avro format. We will talk here why it is needed and how to achieve backward and forward compatibility by designing avro schemas.
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HBase is next step in your big data technology stack

10. September 2017 karden DATA PROCESSING

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Authentication and authorizaton for XMLA Connect and Mondrian

4. August 2017 karden DATA PROCESSING

If you would like to turn on basic authentication for mondrian cubes from excel you need to implement steps below.
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Protected: Robo advisors in FinTech

18. June 2017 karden INVESTMENTS

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How to implement Kylin dialect for Mondrian

18. June 2017 karden DATA PROCESSING

In this post I will explain, how to implement Kylin dialect in Mondrian.

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Improving performance by reading data with Hive for HDFS using subfolders (partitioning)

6. June 2017 karden DATA PROCESSING

In ourĀ  previous article we have discussed the root structure for HDFS. In this article we will discuss next level of the file structure, which will help to improve the speed of reading data.

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