Kibana is great for searching and graphing logs from logstash. The learning curve is a little steep though.
miniblog.
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Superb deep dive on rust compile optimisation with CI caching, examining usage of monomorphisation, and graphing the build tree: https://matklad.github.io/2021/09/04/fast-rust-builds.html
Building Docker images with Nix, and a neat discussion of graphing algorithms to decide how to flatten layers:
Croquet was a 3D world written in Smalltalk. There's a promo video here: https://www.youtube.com/watch?v=mOZPW8l85eI
It's very exploratory, but the demos of a spreadsheet(!) with the 3D graphing and a live video avatar are really cute.