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Recursive SQL queries over tree
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 RECURSIVEon other databases), which I did not back then. -
What Actor Model is really about
TL/DR: read [1] and watch [2]:
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Cloudflare Workers setup and usage
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
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
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!