Reverse proxy
Server-side proxy that fronts your backend.
Origin
The pattern goes back to early caching proxies (Squid, 1996). Nginx (2004) and HAProxy (2001) cemented it as a separate tier in modern architectures.
Where it shows up in production
- Nginx TLS termination + load balancing for ~33% of the top-million sites.
- Envoy CNCF graduated; the data plane behind Istio, Consul Connect, and Google's Cloud Run.
- HAProxy Stack Overflow famously runs all their traffic through a small HAProxy fleet.
On Semicolony
Sources & further reading
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