Cost of Consistency

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Opting for a distributed solution of a problem is mostly motivated by two goals: resilience to failures (via redundancy) and better response time. In this post...

User Stories and Quality

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In my previous post, I started elaboration of a simple user story about Embedded Terminal Application deployment. There we have focused on the middle part...

Stakeholders and Qualities in User Stories

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User Stories seem to be my favourite topic these days...…the idea behind this post started with seemingly innocent user story, like this:I, as an...

Universal Reaction Time Measurements of Embedded Systems

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Reaction time measurement is a process of acquiring timespan for how long it takes for the tested device to change its state after clicking...

Pac-Man is chasing ghosts near Y Soft HQ

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It's true! Ghosts are gathering around our Y Soft HQ in Brno. Only Pac-Man with your help can save us.

Developer testing – effective QA against the rules

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Yes, you heard right! Developer testing. It means testing done by developers! And yes, I’m talking about the confirmation testing, which is known as...

PF 2019

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Wishing you good luck and great success in year 2019. Here is small puzzle game for you based on Sokoban: http://ysofters.com/pf2019 Source code is available at GitHub. You...

Builder pattern without getters

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I like builders. If you've ever seen a constructor with ten parameters, eight of which can be null, you probably like builders, too. While...

Quota System test data DSL

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We use Liquibase in our project as a DB change management tool. We use it to create our DB schema with the basic configuration...

Processing a result set of a LEFT JOIN

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When you work with queries that involve a LEFT JOIN on a 1:n relation, you usually want to map the parent to a collection...