Selecting services based on quality aspects

One of the shortcomings of the previous solution is that we are yet unable to select a provided service based on non-functional characteristics. As a user, I do not care if the chosen string matcher follows the design of the Knuth-Morris-Pratt or the Boyer-Moore algorithm. Instead, I want it to be stable and fast. If there is a new, but yet not thoroughly tested matcher available, I may want to use that for an experimental client. When we think in terms of suitable implementations for the problem we try to solve, we do not think about implementation internals at first, but rather about the non-functional requirements that govern the process of finding a suitable solution.

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2017 in retrospect

Well, we're finally here in 2018 - time to take a look at the past year. The year 2017 has been quite work-intensive, but also very rewarding in terms of my personal and professional life. This post will reflect on the professional aspects and summarize what I've been doing the whole year - and what my plans for 2018 are.

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Using service loaders

Although we progressed through to a working, modularized solution for our string matchers during the last article, we still have an unwanted dependency that goes directly from module matchers.cli to matchers.impl. This prohibits us from using a clean and extensible way of injecting implementations of the Matcher interface. Working through this article, our goal is to end up with a very loose coupling between our Java modules by implementing a mechanism for that kind of dependency injection.

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Hi there! I'm Markus!

I'm an independent freelance IT consultant, a well-known expert for Apache Kafka and Apache Solr, software architect (iSAQB certified) and trainer.

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