Parallel, Concurrent and Using both of them in Ruby

Hi everyone, I’ve been working on a food delivery platform over the 1 year and we some traveling salesman problem on the background. But this problem is little different one the original problem, we add some time constraints to routing. So for this type of problem we need make some fast calculations. For this purpose ...

What Happens When You Upgrade Rails 5.0 to 5.2 and Ruby 2.4.3 to 2.5.3

What Happens When You Upgrade Rails 5.0 to 5.2 and Ruby 2.4.3 to 2.5.3
4 days ago Rails v6.0.0.rc1 was released. This means new version will be released in a few weeks, this is important, because new version includes some performance improvements and the performance is everything for apps. In the beginning of this year (2019) I’ve started to work on legacy rails app that is version v5.0 and ...