gobetween – modern and minimalistic load balancer and reverse-proxy

gobetween is a modern and minimalistic L4 load balancer and reverse proxy for the cloud era.

It aims to provide fast, flexible and full-featured load balancing solution for modern microservice architectures.

gobetween is free and open source software.

Features include:

  • Fast L4 Load Balancing
    • TCP – with optional The PROXY Protocol support.
    • TLS – TLS Termination + ACME & TLS Proxy.
    • UDP – with optional virtual sessions and transparent mode.
  • Clear & Flexible Configuration with TOML or JSON:
    • File – read configuration from the file.
    • URL – query URL by HTTP and get configuration from the response body.
    • Consul – query Consul key-value storage API for configuration.
  • Management REST API:
    • System Information – general server info.
    • Configuration – dump current config.
    • Servers – list, create & delete.
    • Stats & Metrics – for servers and backends including rx/tx, status, active connections & etc.
  • Discovery
    • Static – hardcode backends list in the config file.
    • Docker – query backends from Docker / Swarm API filtered by label.
    • Exec – execute an arbitrary program and get backends from its stdout.
    • JSON – query arbitrary http url and pick backends from response json (of any structure).
    • Plaintext – query arbitrary http and parse backends from response text with customized regexp.
    • SRV – query DNS server and get backends from SRV records.
    • Consul – query Consul Services API for backends.
    • LXD – query backends from LXD.
  • Healthchecks:
    • Ping – simple TCP ping healthcheck.
    • Exec – execute arbitrary program passing host & port as options, and read healthcheck status from the stdout.
    • Probe – send specific bytes to backend (udp, tcp or tls) and expect a correct answer (bytes or regexp).
  • Balancing Strategies (with SNI support):
    • Weight – select backend from pool based relative weights of backends.
    • Roundrobin – simple elect backend from pool in circular order.
    • Iphash – route client to the same backend based on client ip hash.
    • Iphash1 – same as iphash but backend removal consistent (clients remain connecting to the same backend, even if some other backends down).
    • Leastconn – select backend with least active connections.
    • Leastbandwidth – backends with least bandwidth.
  • Integrates seamlessly with Docker and with any custom system (thanks to Exec discovery and healthchecks).
  • Single binary distribution.

Website: gobetween.io
Support: Documentation, github.com/yyyar/gobetween
Developer: Ievgen Ponomarenko and contributors
License: Open source

gobetween is written in Go. Learn Go with our recommended free books and free tutorials.

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