Ingress Vs Egress

Ingress and egress are terms that are used to describe the movement of traffic into and out of a network or system.

Ingress refers to traffic that is entering a network or system. In the context of a service mesh, ingress traffic is typically external traffic that is coming from outside the mesh and is intended for one of the services within the mesh. An ingress gateway is a network component that sits at the boundary of the mesh and is responsible for handling ingress traffic. It can be used to route traffic to the correct service, apply security policies, and perform other types of traffic management.

Egress refers to traffic that is leaving a network or system. In the context of a service mesh, egress traffic is traffic that is generated by one of the services within the mesh and is intended for an external destination. An egress gateway is a network component that sits at the boundary of the mesh and is responsible for handling egress traffic. It can be used to route traffic to the correct destination, apply security policies, and perform other types of traffic management.

Both ingress and egress traffic play an important role in the operation of a service mesh, as they allow services within the mesh to communicate with the outside world and access external resources.