Part 1: HTTP/REST vs. gRPC Protobuf: Architectural Trade-offs in High-Concurrency Distributed Systems

← Series hub | Next Chapter: Part 2 — Golang vs. PHP/Laravel → Answer-first: For internal East-West microservices operating at scale, gRPC over HTTP/2 with Protobuf is non-negotiable, delivering 31x faster serialization, 68.8% lower egress bandwidth, and zero-allocation memory pooling. For external North-South traffic, deploy Go Kratos v2.9.1 dual-protocol servers to expose REST/JSON to web browsers while preserving high-throughput gRPC internally without intermediate proxy network hops. For a foundational breakdown of production Go microservices and Kubernetes cluster architecture, refer to our comprehensive Go Microservices Architecture Guide. ...

August 16, 2026 · 27 min · Lê Tuấn Anh

Part 2: Rush Monorepo — Managing 21 Go & 2 Next.js Microservices

← Previous Chapter: Part 1: DDD & Bounded Contexts | Series Hub | Next Chapter: Part 3: Go + Kratos v2 Framework Deep Dive → Answer-first: Using Microsoft Rush with PNPM workspaces enables polyglot monorepo management across 21 Go microservices and 2 Next.js frontends. It automates Protobuf code generation via Buf, enforces dependency boundaries, and slashes CI build times by 70% with incremental build caching. Managing 21 independent Git repositories creates severe operational friction: version mismatch across shared Protobuf contracts, fragmented CI pipelines, and delayed end-to-end integration testing. ...

April 10, 2026 · 2 min · Lê Tuấn Anh

Part 4: gRPC Internal + REST Gateway — The API Contract Lifecycle

← Previous Chapter: Part 3: Go + Kratos v2 Framework Deep Dive | Series Hub | Next Chapter: Part 5: Migrating Magento EAV Schema to PostgreSQL → Answer-first: Every API in our Composable Commerce system starts with a Protocol Buffers (.proto) contract. Internal microservices communicate over binary gRPC for 7x faster serialization, while gRPC-Gateway automatically exposes standard REST/JSON endpoints with OpenAPI 3.1 specs for web and mobile clients. In modern 2026 cloud architectures, internal services communicate over gRPC (type-safe, binary format, ~7x faster than JSON over HTTP/1.1). External clients (web browsers, mobile apps) communicate over standard REST via a Gateway Service (using grpc-gateway or Connect by Buf running at the edge). ...

April 29, 2026 · 3 min · Lê Tuấn Anh

Golang gRPC Microservices: Protobuf, TLS & Middleware

Golang gRPC Microservices: Protobuf, TLS & Middleware Answer-first: Production Go gRPC microservices combine Protobuf binary serialization, mTLS transport encryption, interceptor middleware logging, and gRPC-Health checking for high-throughput RPC performance. Implementing this architecture enforces sub-50ms P99 latency guarantees, zero-allocation memory pooling with Go 1.24 unique.Handle, and fault-tolerant Dapr 1.15 component orchestration for resilient production scaling. This design guarantees sub-50ms P99 latency bounds and zero-allocation memory pooling. Why gRPC for Go Microservices? gRPC over HTTP/2 with binary Protobuf serialization reduces payload sizes and lowers latency compared to REST/JSON: ...

June 11, 2026 · 17 min · Lê Tuấn Anh