echelon / interview

Interview

Install Rust

Install rustup:

curl https://sh.rustup.rs -sSf | sh

To use an old version of Rust:

rustup toolchain install 1.36.0
rustup toolchain default 1.36.0

Useful commands:

rustup show

Build the binary

# Fast build & run
cargo run

# Debug binary (fast)
cargo build
./target/debug/interview

# Properly optimized release build (slow)
cargo build --release
./target/release/interview

To deal with dependencies independently of the app,

# Pull dependencies (but do not build them)
cargo fetch

# Or,
# Install cargo extension for independent building of deps
cargo install cargo-build-deps

# Then
RUN cargo build-deps
RUN cargo build

# Or,
RUN cargo build-deps  --release
RUN cargo build  --release

Configuration

The config.yaml file contains much of the application config. Some other configurations are passed as the following environment variables:

• REGION, the region in which we're running our app, defaults to local
• ENVIRONMENT, the named environment our application runs in, defaults to development
• CONFIG_FILE, location of the main app config file to load. Defaults to config.yaml.
• REDIS_SECRETS_FILE, location of a "secrets" file for Redis. Defaults to redis.yaml.
• STARTUP_WAIT_MILLIS, amount of time to wait before the app begins serving traffic. Defaults to 30000.

There are secrets in redis.yaml, which should be overwritten but not committed. This can lead into discussions about secrets management.