gRPC: High-Performance Microservices Communication Framework

gRPC, Google tarafından geliştirilen high-performance, open source RPC (Remote Procedure Call) framework'üdür ve microservices communication için REST alternatif olarak yaygın kullanılır. gRPC, Protocol Buffers (protobuf) ile interface definition ve serialization yapar; protobuf binary format olarak JSON'a göre daha küçük payload size ve faster serialization/deserialization sağlar. gRPC communication types: Unary (single request, single response), Server streaming (single request, multiple responses), Client streaming (multiple requests, single response) ve Bidirectional streaming (multiple requests and responses in any order). gRPC advantages: high performance (HTTP/2 multiplexing, binary protocol, header compression), strongly-typed contracts (protobuf code generation), built-in authentication (TLS, token-based) ve cross-language support (10+ language implementations). gRPC challenges: browser support limitation (grpc-web proxy gereklidir), debugging complexity (binary protocol human-readable değil), firewall compatibility (HTTP/2 requirement) ve learning curve (protobuf, code generation). gRPC Gateway, REST JSON interface'i gRPC service'lere translate eder ve browser/client compatibility sağlar; open API specification generation ile API documentation otomatikleştirir.