Steven Olsen

@srjsdev

Online educator and mentor for Sr. JS developers

Joined October 2022

About

With 15+ years of dev experience, I'm an online educator, mentor, and consultant--teaching practical, advanced topics to developers like you on how to write: ✅ maintainable JS code ✅ scalable web apps ...yup that's about it! 🎤

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Steven Olsen's blogs

Sr. JS Devsrjsdev.hashnode.dev9 posts

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Recently published

srjsdev.hashnode.dev

Let Service Workers Help Speed Up Your Site Performance by 10X

As I was recently converting a personal project into a PWA, I started to learn about service workers. I knew a little bit, but after some more digging (and even more debugging), here's the summary of what you should take away: Service Workers are al...

Mar 7, 20236 min read

srjsdev.hashnode.dev

3 New Features of Deno that Most JS Devs Don't Know About

Deno is a modern, secure, and performant runtime for JavaScript and TypeScript. It is often compared to its progenitor NodeJS, and its zippy younger brother BunJS. Among Deno's main features are: Built-in Modules: Deno comes with a standard library ...

Feb 2, 20233 min read

srjsdev.hashnode.dev

Generator Functions: Zero to Hero

Hello and welcome. Huh? You're going to teach me about something I don't absolutely need to know? Yes, that's right. Let me explain first, and then you can decide whether to read on or not. But if you stick around, I think you'll enjoy the ride while...

Jan 20, 20236 min read

srjsdev.hashnode.dev

101 Ways to Work with Arrays in JavaScript

Arrays are a great way to store and manipulate data in JavaScript. As such, there are many methods provided in JavaScript for manipulating Arrays. Manipulating Individual Values To manipulate (i.e. mutate/change) an Array, you can use built-in array ...

Jan 2, 20234 min read

srjsdev.hashnode.dev

Async Promise cache PART 2: Invalidation strategies (with solutions!)

🌈 Editor's Note: Please read PART 1 to understand how/when to use a Promise cache. Since my previous article, many people have asked me how to approach cache invalidation. It's a fair question, given its prominence among the top two hardest challen...

Dec 2, 20225 min read

Steven Olsen

About

Available for

Steven Olsen's blogs

Recently published

Let Service Workers Help Speed Up Your Site Performance by 10X

3 New Features of Deno that Most JS Devs Don't Know About

Generator Functions: Zero to Hero

101 Ways to Work with Arrays in JavaScript

Async Promise cache PART 2: Invalidation strategies (with solutions!)

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Steven Olsen

About

Available for

Steven Olsen's blogs

Recently published

Let Service Workers Help Speed Up Your Site Performance by 10X

3 New Features of Deno that Most JS Devs Don't Know About

Generator Functions: Zero to Hero

101 Ways to Work with Arrays in JavaScript

Async Promise cache PART 2: Invalidation strategies (with solutions!)