Multiple data stores and eventual consistency using micro-services

There are cases where there isn't a single source of truth when it comes to the data that a fleet of micro-services consume. The data is thus sparse across multiple storage solutions, each designed to solve a specific problem using a sub-sets of it. This can be either mirrored via syncing to a specific format (think for ...

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The perils of writing request specs using concurrent-ruby under the JVM

When I write an API, though I'm not a hard core TDD practitioner, I do like writing specs - especially requests specs that test the whole stack.

Adding them into an API is fast and yields quite good results compared to an app with an UI where you have to use chrome-cli or phantomjs just to get near of that level but ...

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JRuby, RVM and Vim walk into a (performance) bar

I'm not sure why RVM is still my default Ruby version manager yet the issue at hand should be reproducible on rbenv too.

Let's add a bit of context to this: we have an API written in Ruby and running on JRuby i.e. via JVM which implies slow start-up times compared to CRuby (yes, even with export JRUBY_OPTS='--dev' ...

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