TIL Flamegraphs which could be used for performance debugging.

Read some pieces of documentation of Swift-Server: Debugging Performance Issues, and Allocations both discuss Flamegraphs.

Followed with read Build system which describes how to build on macOS for Linux, and Deploying to DigitalOcean, Deploying on Ubuntu, Packaging Applications for Deployment.

Read The Discrete Fourier Transform in live pictures for ninth graders.