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Re:Gravitee: Open-Source API Gateway by rdli on Saturday December 29, 2018 @06:50PM (#18786413)
From what I gather in the GitHub repository, they implement their own L7 management, instead of using NGINX, Envoy, HAProxy, etc. IMO, this adds quite a bit of development cost with minimum benefit.

Kong has built on OpenResty (which is built on NGINX), Ambassador has been built on Envoy Proxy -- I think these projects will be able to sustain their velocity more so than projects that need to maintain their own L7 engine. Just watching the speed at which Envoy Proxy is adding stuff is kind of staggering; hard to imagine how another company could do the same on their own homegrown engine.

Re:Gravitee: Open-Source API Gateway by jively on Saturday December 29, 2018 @09:57PM (#18787076)
Tyk runs its own L7 engine, mainly around primitives provided by the Golang stdlib, IMO having full control over this part provides a lot more flexibility than sitting on top of someone else’s stack, bugs are faster to eke out and optimisation doesn’t rely on upstream code.

(Caveat: I’m the CEO of Tyk)

Re:Gravitee: Open-Source API Gateway by alain_gilbert on Saturday December 29, 2018 @10:09PM (#18787110)
Sorry for asking simple questions.

Can someone tell us what exactly is L7 ?

It seems like I cannot find any information when googling it.

Re:Gravitee: Open-Source API Gateway by alain_gilbert on Saturday December 29, 2018 @10:15PM (#18787145)
For those interested, "L7 engine" seems to be the "application layer" https://en.wikipedia.org/wiki/Application_layer in the OSI model https://en.wikipedia.org/wiki/OSI_model

So communication protocol such as gRPC and HTTP.