@@ -365,12 +365,14 @@ Four alternatives were seriously considered:
* Varnish + stunnel
* Fastly
Other alternatives were ignored:
Other alternatives were not:
* [Apache HTTPD caching](https://httpd.apache.org/docs/2.4/caching.html) - performance expected to be sub-par
* [Envoy][] - [not designed for caching](https://github.com/envoyproxy/envoy/issues/868), [external cache support
planned in 2019](https://blog.getambassador.io/envoy-proxy-in-2019-security-caching-wasm-http-3-and-more-e5ba82da0197?gi=82c1a78157b8)
* [HAproxy](https://www.haproxy.com/) - [not designed to cache large objects](https://www.haproxy.com/documentation/aloha/9-5/traffic-management/lb-layer7/caching-small-objects/)
* [Ledge](https://github.com/ledgetech/ledge) - caching extension to Nginx with ESI, Redis, and cache
purge support, not packaged in Debian
* [Nuster](https://github.com/jiangwenyuan/nuster) - new project, not packaged in Debian (based on
HAproxy), performance [comparable with nginx and varnish](https://github.com/jiangwenyuan/nuster/wiki/Web-cache-server-performance-benchmark:-nuster-vs-nginx-vs-varnish-vs-squid#results)
according to upstream, although impressive improvements
