Ruby On Rails

Tutorials

Ruby Garbage Collection Deep Dive

Ruby Garbage Collection Deep Dive There’s an old saying that we can learn a lot about people by looking at their trash. The same can hold true about programming languages. More precisely, we can learn a lot about a programming language by looking at its garbage collection. This po...

3 Practical Uses of Ruby's `method_missing`.

3 Practical Uses of Ruby's `method_missing`. Learn the practical uses of Ruby's method_missing. You can use the method_missing method to handle errors, delegate methods and build DSLs.We define methods inside classes. Ruby traverses a method lookup path when an object calls a method, startin...

Developing with Docker (ENG) - Mo Khan | Ruby Meditation 30 - YouTube

Developing with Docker (ENG) - Mo Khan | Ruby Meditation 30 - YouTube I hope that the code I write continues to be used after I die. Which is why I only ever write legacy code" - this is what Patterson mentioned on his Twitter last September. In this talk, I will define metrics and try to distinguish code from Legac...

Memoize Expensive Code - Andy Croll

Memoize Expensive Code - Andy Croll The ||= operator can provide significant performance improvements.Memoization is a performance optimization where the result of a slow or non-performant piece of code is temporarily stored, and when the expensive code is called again, the stored v...

Rails 6.1 adds support for PostgreSQL interval data type

Rails 6.1 adds support for PostgreSQL interval data type PostgreSQL Interval Data Type allows us to store a duration/period of time in years, months, days, hours, minutes, seconds, etc. It also allows us to perform arithmetic operations on that interval.There are two input formats for interval data. The...

How to run tests in parallel in Github Actions

How to run tests in parallel in Github Actions The company I work for has recently switched to Github Actions for CI, as they offer 2000 minutes per month which is quite adequate for our volume. We have been running tests in parallel (2 instances) on the previous CI to save time, and we wanted...

What week is it anyway? Part 1

What week is it anyway? Part 1 Raise your hand if you’ve ever come across a test case failing due to a recent year change. Sounds familiar? Well, here’s my story about a bug that waited for five years to cause my test suite to fail for the first time – and would wait for anothe...

Designing a Ruby Serverless Runtime

Designing a Ruby Serverless Runtime Last week, Google announced the public beta of the Ruby runtime for Cloud Functions, Google’s functions-as-a-service (FaaS) hosting platform. Ruby support has lagged a bit behind other languages over the past year or so, but now that we’ve caught ...

How ActiveRecord Uses Caching To Avoid Unnecessary Trips To The Database

How ActiveRecord Uses Caching To Avoid Unnecessary Trips To The Database A general way to describe caching is storing the result of some code so that we can quickly retrieve it later. In some cases, this means storing a computed value to avoid needing to recompute it later. However, we can also cache data by simply kee...

Rails 6.1 adds support for belongs_to to has_many inversing

Rails 6.1 adds support for belongs_to to has_many inversing Before Rails 6.1, we could only traverse the object chain in one direction - from has_many to belongs_to. Now we can traverse the chain bi-directionally.The inverse_of option, both in belongs_to and has_many is used to specify the name of the inve...

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