什么是 gRPC
学习 gRPC 的核心原则和起源，以及它如何利用 HTTP/2 实现高效通信
什么是 gRPC 是 CoddyKit 上的免费 gRPC & High Performance APIs 课时。 这是第 2 节课，共 4 节。 你可以在下方免费阅读本课时的完整内容 — 然后在浏览器中使用内置代码编辑器和全天候 AI 导师进行实践。 这是 gRPC & High Performance APIs 学习路径的一部分，你的进度在网页和 CoddyKit 应用中同步。 gRPC & High Performance APIs 课程共包含 4 节课。
本课时的部分内容尚未翻译，以英文显示。
Discovering gRPC
Meet gRPC, a high-performance framework for modern APIs. Built for speed and efficiency, it's a great fit for distributed systems and microservices.
Understanding Remote Procedure Calls
RPC (Remote Procedure Call) lets you invoke a function on another machine as if it were local — client sends a request, server runs it and replies.
RPC: A Local Call, Remotely
Imagine calling add(5, 3) when add lives on a remote server. RPC hides every network detail so it feels like a plain local call.
Why gRPC for Modern APIs?
gRPC beats plain REST for internal microservices: faster via HTTP/2 and binary serialization, strongly typed to prevent format errors, and multi-language.
HTTP/2 Powers gRPC
A big reason for gRPC's speed is HTTP/2. Unlike HTTP/1.1's one-at-a-time exchange, HTTP/2 carries many requests and responses over a single connection at once.
Binary & Multiplexing
HTTP/2 uses binary framing (cheaper to parse than text) and multiplexing, so requests and responses interleave on one connection without blocking.
Protocol Buffers: Data Definition
Protocol Buffers are gRPC's IDL and serialization format. You define services and messages in a .proto file, then compile it into code for many languages.
RPC vs. REST (Brief Look)
Quick contrast: REST is resource-oriented over HTTP methods with JSON, while gRPC is service-oriented using Protobuf over HTTP/2 — ideal for internal, high-perf calls.
Why Choose gRPC?
gRPC wins on four fronts: high performance from HTTP/2 and Protobuf, code generation with strong typing, language-agnostic services, and built-in streaming.
Quick Check on gRPC
Which of the following are key characteristics or technologies used by gRPC?
What We Learned About gRPC
You've got gRPC: a high-performance RPC framework on HTTP/2, using Protocol Buffers for interfaces, with speed, strong typing, and language interop. Next: a deeper REST comparison.
常见问题解答
「什么是 gRPC」课时是免费的吗？
是的 — 「什么是 gRPC」的完整文本可在网页上免费阅读。要进行交互式练习（内置代码编辑器和全天候 AI 导师）并解锁 gRPC & High Performance APIs 课程的其余内容，请升级到 CoddyKit PRO。 gRPC & High Performance APIs 课程共包含 4 节课。
「什么是 gRPC」这节课中我会学到什么？
学习 gRPC 的核心原则和起源，以及它如何利用 HTTP/2 实现高效通信 你通过在浏览器中直接运行的动手代码来练习 gRPC & High Performance APIs，全天候 AI 导师会在你学习这节课的过程中回答你的问题。
学习 gRPC & High Performance APIs 需要有经验吗？
无需任何先前经验。CoddyKit 上的 gRPC & High Performance APIs 课程适合初学者到高级学习者，你可以从这里开始或从头开始，按照自己的节奏学习。 这是第 2 节课，共 4 节。
「什么是 gRPC」课时需要多长时间？
大多数 CoddyKit 课程大约需要 5–10 分钟。每节课都很精短且互动，所以你能稳步进步，并在网页和应用中从离开的地方继续。
我能在这节 gRPC & High Performance APIs 课中编写并运行代码吗？
能。每节 gRPC & High Performance APIs 课都包含内置代码编辑器，你可以在浏览器中直接编写并运行真实代码，并获得即时 AI 反馈 — 无需本地设置。