Katika mfumo, vipengee (huduma, wateja) vinavyowasiliana kupitia APIs na itifaki mbalimbali — sinkroni (REST, gRPC) na asinkroni (ujumbe/foleni). Kuelewa jinsi vipengee vinavyowasiliana ni muhimu kwa kutengeneza mifumo inayojumuisha sehemu nyingi.
Uywasiliano wa sinkroni (ombi/jibu)
The caller WAITS for a response (blocking):
REST (HTTP) → most common; resources over HTTP (JSON) → simple, ubiquitous, web-friendly
gRPC → high-performance RPC (binary, HTTP/2) → fast, typed; good for internal services
GraphQL → flexible queries (client requests exactly what it needs)
→ for: direct request/response where the caller needs an answer now
