Python package formats : it’s hard to keep track of them 🙂

https://www.bernat.tech/pep-517-and-python-packaging/

Always though that variables shadowing was a problem : https://doc.rust-lang.org/book/ch03-01-variables-and-mutability.html#shadowing
and I still thinks so : https://mail.mozilla.org/pipermail/rust-dev/2013-May/004306.html

Microservice design : brokerless vs. broker/message bus based, interesting read

Nice dependency injection in Go : https://medium.com/@fsufitch/dependency-injection-and-testability-in-a-go-webservice-a91d0e5469dd

API Gateways : https://konghq.com/ https://tyk.io/

Goroutines in go 1.13 how they work : https://medium.com/a-journey-with-go/go-what-does-a-goroutine-switch-actually-involve-394c202dddb7

Monitoring air quality : http://www.esa.int/Applications/Observing_the_Earth/Copernicus/Monitoring_air_quality_takes_next_step