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Redis Pub/Sub and Redis Stream
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Redis Pub/Sub and Redis Stream

Is Redis Stream better than Redis Pub/Sub for my chat service?That was a question for me when I first read about Redis Stream - a new data type introduced with Redis 5.0. So, I will go into a lot of
Drew
ActiveRecord performance: N+1 queries
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ActiveRecord performance: N+1 queries

Reference: https://guides.rubyonrails.org/active_record_querying.html#eager-loading-associations What is N+1 query? The N+1 query problem is one of the common performance antipatterns in ORMs. It ha
Bond
Javascript: Spread Operator
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Javascript: Spread Operator

What is Spread Operator? ES6 provided a new operator called spread operator that consists of three dots (...). The spread operator allows you to expand arguments for function calls, elements for array
Huska
Rails: "find_in_batches" vs."in_batches" in depth comparison
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Rails: "find_in_batches" vs."in_batches" in depth comparison

Rails, just like many other frameworks, has a lot of magic (and surprises too). Last month, when I had a chance to do a performance tuning for the ActiveRecord #find_in_batches and #find_batch I found
Tran Khanh
JavaScript: var, let and const
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JavaScript: var, let and const

I. IntroductionECMAScript6 (abbr. ES6) is the second major revision to JavaScript and also known as ECMAScript2015. This is a JavaScript standard meant to ensure the interoperability of web pages acro
Kingsley
Behavior-driven development
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Behavior-driven development

BDD represents behavior-driven development. BDD helps teams focus efforts on identifying, understanding and building features that delivery business values. BDD also suggests to documentation for feat
Hai Nguyen
Hai Nguyen
Accessibility for Software Developer
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Accessibility for Software Developer

Your application is not accessibleIt was an ordinary day at my old company. My colleague (his name starts with J) and I were busy maintaining a mobile app project. Although only two developers are wo
Tywin
Tywin
Top recommended UI-controls for front-end developer
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Top recommended UI-controls for front-end developer

1. Ant DesignHome page: https://ant.design/License: MITSuppported:ReactJS: https://ant.design/components/overview/Angular (2 or above): https://ng.ant.design/components/overview/enMobile viewport: htt
Niko
Niko