Rust + Axum + SQLx + Postgres overview

Rust web service stack: Axum (a tokio-based, modular HTTP framework from the Tower ecosystem), SQLx for compile-time verified SQL queries with async support, and PostgreSQL as the primary data store. This stack targets extremely high-throughput, low-latency API services where memory safety, predictable performance, and small binary size matter. Tower middleware (auth, rate limiting, tracing) layers cleanly onto Axum. sqlx macros catch schema mismatches at compile time. The tracing + tracing-subscriber crates handle structured observability. Deployment commonly targets Fly.io, bare VMs, or Kubernetes with distroless container images.