Suggest an editImprove this articleRefine the answer for “When should you use gRPC?”. Your changes go to moderation before they’re published.Approval requiredContentWhat you’re changing🇺🇸EN🇺🇦UAPreviewTitle (EN)Short answer (EN)**gRPC** is worth using when microservices need to exchange data fast, often, and in large volumes, where REST starts to slow down because of its text format and HTTP overhead. **Key point:** gRPC is chosen for high-load, internal, typed communications, where speed, streaming data, and precise contracts between microservices matter.Shown above the full answer for quick recall.Answer (EN)Image**gRPC** is worth using when microservices need to exchange data **fast, often, and in large volumes**, where REST starts to slow down because of its text format and HTTP overhead. ### 1. **Internal microservice communication** gRPC is ideal for *service-to-service* communication inside a system. It runs over the binary **HTTP/2** protocol, which gives: - lower latency, - streaming, - efficient compression. *Example:* the orders service calls the payments service dozens of times per second: gRPC is faster and more reliable than REST. ### 2. **Strict typing and contracts are needed** gRPC uses **.proto** files that describe all data structures and methods. This gives a strict contract between services and rules out format errors. ### 3. **Bidirectional communication or data streams are needed** gRPC supports *streaming*: the client and server can send data as streams instead of waiting for a full response. This matters for chats, telemetry, analytics, and real-time systems. ### 4. **Multi-language ecosystem** gRPC automatically generates code for different languages, which is convenient when microservices are written in different stacks. ### When **not** to use it - If you need a **public REST API** (not all clients support gRPC). - If the priority is simple integration through a browser. **Summary:** > gRPC is chosen for **high-load, internal, typed communications**, > where speed, streaming data, and precise contracts between microservices matter.For the reviewerNote to the moderator (optional)Visible only to the moderator. Helps review go faster.