iiinova — where your digital self keeps evolving

Teiva Harsanyi @teivah.dev · 22/10/2025

[New post] Speed vs. Velocity: The Difference Between Moving Fast and Moving Forward read.thecoder.cafe/p/speed-vs-v...

Teiva Harsanyi @teivah.dev · 15/10/2025

I created a new root website for thecoder.cafe and moved the newsletter to read.thecoder.cafe. Thanks to @Cloudflare, which enabled a smooth transition.

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Teiva Harsanyi @teivah.dev · 07/10/2025

Today marks the birthday of my newsletter 🥳! It turns out that I wrote quite a bit during the year, so I decided to compile all the posts and release them as a book (260 pages). The book is available on Leanpub: DRM-free EPUB/PDF. Get the book: leanpub.com/thecodercafe... RT appreciated 🙏.

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Teiva Harsanyi @teivah.dev · 29/09/2025

My notes on the SILK: Preventing Latency Spikes in LSM Key-Value Stores whitepaper. substack.com/@teivah/note...

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Teiva Harsanyi @teivah.dev · 08/09/2025

The Coder Cafe is a top 100 rising Substack in Technology. substack.com/leaderboard/... 👉 thecoder.cafe

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Teiva Harsanyi @teivah.dev · 26/05/2025

[New post] Property-Based Testing: Moving Beyond Traditional Tests "Traditional tests don’t guarantee a bug-free system; a passing test only confirms that the tested scenario behaves as expected." www.thecoder.cafe/p/property-b...

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Teiva Harsanyi @teivah.dev · 15/05/2025

That’s the 3rd time in my last 8 posts on thecoder.cafe that one made it to Hacker News front page. 🧵 A thread on how I did it.

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Teiva Harsanyi @teivah.dev · 12/05/2025

📣 New blog post Working on Complex Systems: What I Learned Working at Google www.thecoder.cafe/p/complex-sy...

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Teiva Harsanyi @teivah.dev · 30/04/2025

I just published Ford-Fulkerson Algorithm: A Step-by-Step Guide to Max Flow thecoder.cafe/p/ford-fulke...

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Teiva Harsanyi @teivah.dev · 14/04/2025

I've added on my website a section on my personal book recommendations: teivah.dev/books/

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Teiva Harsanyi @teivah.dev · 26/03/2025

📣 I published a new blog post: Lurking Variables: How Hidden Factors Can Mislead Your Analysis

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Teiva Harsanyi @teivah.dev · 13/02/2025

Probabilistic Increment: A Randomized Algorithm to Mitigate Hot Rows thecoder.cafe/p/probabilis...

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Teiva Harsanyi @teivah.dev · 13/02/2025

Test-Driven Development (TDD): A Personal Perspective on TDD Practices thecoder.cafe/p/tdd

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Teiva Harsanyi @teivah.dev · 13/02/2025

Exploring Database Isolation Levels: A Deep Dive into Anomalies thecoder.cafe/p/exploring-...

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Teiva Harsanyi @teivah.dev · 13/02/2025

Concurrency vs. Parallelism: What Every Developer Should Know thecoder.cafe/p/concurrenc...

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Teiva Harsanyi @teivah.dev · 13/02/2025

Unit Tests As Documentation: Why Tests Are Living Docs thecoder.cafe/p/unit-tests...

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Teiva Harsanyi @teivah.dev · 09/12/2024

Go as the most popular choice for API client language -- Cloudfare Radar 2024 radar.cloudflare.com/year-in-revi...

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Teiva Harsanyi @teivah.dev · 09/12/2024

A fancy pattern I like in Go to pass multiple variadic arguments. I wouldn't use it everywhere but in some specific contexts it can make sense. For example in a testing context to make the test cases as short as possible. Playground: go.dev/play/p/IYXc2...

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Teiva Harsanyi @teivah.dev · 04/12/2024

Every day, I'm loving my custom AOC library a bit more 😁 My solution for the advent of code day 4: github.com/teivah/adven...

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Teiva Harsanyi @teivah.dev · 01/12/2024

Doesn't look suspicious at all

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Teiva Harsanyi @teivah.dev · 19/11/2024

I love Go's error handling but when you see this piece of code from k8s repo, that makes me feel that something's missing.. github.com/kubernetes/k...

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