Tutorials

A project recreated all of Switzerland in Minecraft at 1:1 scale using open geospatial data on elevation, glaciers, and hydrography. Here’s how the pipeline works that turns a digital terrain model into an explorable voxel world, replicable with open source tools.

pgrust is one engineer’s attempt to rewrite PostgreSQL in Rust, and its aggressive testing has already uncovered real bugs in the original Postgres. The case shows how thoroughly testing a rewrite of mature software can improve even the program it aims to replace.

Goose is a systems language without a heap, garbage collector, or lifetime annotations that, according to its own benchmarks, runs faster than C++ and Rust while using less memory. Here’s how the data stack model that makes this possible works.

Play Integrity API is the mechanism banks use to verify with hardware whether your Android is genuine, and it increasingly lets GrapheneOS through. We explain how the chip’s chain of trust works, what its three verdict levels mean, and why an operating system other than the factory one can pass it without tricks.

Docker doesn’t contain anything of its own: namespaces, cgroups, and pivot_root are the real pieces that runc, its container runtime, assembles. We cover how it works inside, why it had to fake a fork() in Go, and how to build your own mini runtime with unshare and chroot.