hejops / ztp

Zero to Production

Ch 0

• cloud-native applications must have high availability (distributed), and handle dynamic workloads (elastic)

• TDD and CI will be important

• type system should make undesirable states difficult or impossible to represent

• code must be expressive enough to solve the problem, but flexible enough to be allowed to evolve; run first, optimise later

Ch 1

• installation, tooling, CI
• inner development loop: write, compile, run, test

1. faster linking with lld:

   # Arch: `sudo pacman -S lld clang`
   # Cargo.toml
   [target.x86_64-unknown-linux-gnu]
   rustflags = ["-C", "linker=clang", "-C", "link-arg=-fuse-ld=lld"]

2. project watcher:

   cargo install cargo-watch
   cargo watch -x test -x run

3. code coverage:

    cargo install cargo-tarpaulin
    cargo tarpaulin --ignore-tests

4. linting:

    rustup component add clippy
    cargo clippy
    cargo clippy -- -D warnings

5. formatting:

    rustup component add rustfmt
    cargo fmt
    cargo fmt -- --check

6. security:

    cargo install cargo-audit
    cargo audit

Ch 5

• "Production environments [focus on] running our software to make it available to our users. Anything that is not strictly related to that goal is either a waste of resources, at best, or a security liability, at worst."

• Virtualisation (Docker) allows you to use a self-contained environment and get away with saying "it works on my machine" when you deploy. Hosting (DigitalOcean) lets you actually deploy the thing.