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ExpressGateway

A globally distributed load balancer written in Rust, featuring:

  • L7 data plane: HTTP/1.1, HTTP/2, HTTP/3 with frame-by-frame processing
  • L4 data plane: XDP/eBPF-based TCP and UDP load balancing
  • QUIC-native proxying via quiche
  • Native gRPC proxy with full streaming support
  • Compression: zstd, brotli, gzip, deflate with streaming and transcoding
  • 11 load-balancing algorithms: round-robin, weighted, P2C, Maglev, ring hash, EWMA, and more
  • Active and passive health checking
  • Full DoS mitigation catalog
  • File-backed control plane with trait seam for future distributed backends
  • Standalone and HA modes
  • Zero-downtime reload via SO_REUSEPORT and FD passing
  • Panic-free: zero unwrap/expect/panic! in non-test code

Building

cargo build --release

Testing

cargo test --all --all-features

License

GPL-3.0-only