gRPC Microservice Communication with AWS AppMesh

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Agenda • Microservice Communication & It’s Challenges • What is gRPC & how it works ? • AWS App Mesh • Demo

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The Big Monolith

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The Big Monolith

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Micro-Services Today

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Challenges Managing Communication

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Managing Communication • Managing API Contracts • Overhead to Write Client Code • Performance Issues with sending JSON over the http

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Challenges Managing Communication Service Discovery

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Service Discovery 172.31.1.10/16 172.31.1.10/16 172.31.2.20/16

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Challenges Managing Communication Service Discovery Observability & Resilience

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Observability & Resilience • Tracking failures in up-stream services • Application performance monitoring of up-stream services • Resilience - Retries, Circuit breaker pattern etc..

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What is gRPC ? • Inter-Process communication technology • Binary messaging format on top of Http/2 (Protobuf) • Invoke remote methods like a local function call • Contract first approach • Polyglot

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gRPC Contract (.proto) Inventory_manager.proto

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gRCP Client & Server Inventory_manager.proto Client (C# .Netcore) Server (C# .Netcore)

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gRPC vs HTTP API’s Source – Microsoft Docs

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What is AWS App Mesh ? • Managed Service Mesh for application-level networking • End to end visibility/observability support for Microservices • Traffic Management Capabilities (Http2, gRPC) • Hybrid deployments

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AWS App Mesh

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Sidecar Pattern

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Concepts • Service Mesh - A logical boundary for network traffic between the services that reside within it • Virtual Service - is an abstraction of an actual service that is provided by a virtual node, directly or indirectly, by means of a virtual router. • Virtual Node - acts as a logical pointer to a discoverable service, such as an Amazon ECS service • Virtual Router & Routes - Virtual routers handle traffic for one or more virtual services within your mesh • Virtual Gateway – allows resources outside your mesh to communicate with services inside the mesh