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  • Recursive SQL queries over tree

    Nov 17, 2023

    Some 10+ years ago on a job interview I was asked to query the database for the comments tree in a front-end friendly way, meaning no heavy processing/sorting to happen on the back-end. Turns out this question was to check if I knew about the Hierarchical Queries with Oracle (WITH RECURSIVE on other databases), which I did not back then.

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  • What Actor Model is really about

    May 25, 2023

    TL/DR: read [1] and watch [2]:

    1. Actor Model of Computation
    2. The Actor Model (Hewitt, Meijer, Szyperski)

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  • Cloudflare Workers setup and usage

    May 19, 2023

    TL;DR: See sergey-melnychuk/project-one.

    INFO: Optional fields missing from Cargo.toml: ‘description’, ‘repository’, and ‘license’. These are not necessary, but recommended INFO: ✨ Done in 2.43s INFO: 📦 Your wasm pkg is ready to publish at /home/work/Temp/project-one/build.

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  • AWS Lambda memory usage

    May 12, 2023

    AWS Lambda shows memory peak-usage, but when memory usage hits the limit, breaking down where exactly too much memory is being used might be a very useful things. The runtime is kind of a black box (at least in my understanding), so any telemetry/measurements need to be baked into the function. For this example, I only describe an approach useful for Rust runtime.

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  • The mythical 10x engineer

    Sep 15, 2022

    The 10x engineer - whole industry was discussing it, laughing at it, learning how to become it quite for some time. Googling “10x engineer” gives tons of content (as probably with any other catch-phrase), including some stuff to watch and read. Quite a lot whas told & written about it, but I feel the World needs one more post on the topic!

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