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Book review: ‘Are you smart enough to work at Google?’
You need to toss a coin for a football match. The only coin you have is bent and biased towards one outcome. How do you use the coin and ensure a fair toss? I love a good a puzzle ...
Estimating the Unknown: Dates or Budgets, Part 1
Almost every manager I know wants to know when a project will be done. Some managers decree when a project will be done. Some managers think they can decree both the date and the feature ...
Estimating the Unknown: Dates or Budgets, Part 2
In Part 1, you had some knowledge of the team’s velocity. This is the option of when you do not have knowledge of the team’s velocity, because this team has not worked together ...
The disastrous impact of IT Outsourcing to the Motivation and Results of Software Developers
IT Outsourcing (or the transfer of business functions to an external service provider) is a common practice in almost all big companies and a standard tool in top management consulting. ...
The Developer/Non-Developer Impedance Mismatch
Most software developers have probably heard of and even had experiences with the object-relational impedance mismatch (often addressed with ORM tools), the object-XML impedance mismatch ...
Software Development Metrics that Matter
As an industry we do a surprisingly poor job of measuring the work that we do and how well we do it. Outside of a relatively small number of organizations which bought into expensive ...
MapReduce Questions and Answers Part 2
4 Inverting Indexing for Text Retrieval The chapter contains a lot of details about integer numbers encoding and compression. Since these topics are not directly about MapReduce, ...
MapReduce Questions and Answers Part 1
With all the hype and buzz surrounding NoSQL, I decided to have a look at it. I quickly found that there is not one NoSQL I could learn. Rather, there are various different solutions ...
5′ on IT-Architecture: three laws of good software architecture
The issue with architectural decisions is that they effect the whole system and/or you often need to make them early in the development process. It means a lot effort if you change ...
Code comments gone wrong
Adding code comments is supposed to be good practice, but here is why it often fails:Code is the single authoritative source of truth in a program! There is no way to ensure that ...
