Shout out to Lyft for Envoy. I haven't used it all that much, but it's been very set and forget. The other "API gateways" like Linkerd and Kong are either a bunch of hacky Lua scripts (Kong) or use a lot of ram for the number of instances you'll probably want (Linkerd)
Kong is a fully fledged Lua/C application running on the LuaJIT VM and leveraging the NIO of Nginx, the same stack that powers the underlying proxy of companies like Cloudflare by the way.
