WebSocket API
A WebSocket API keeps an open, bidirectional TCP connection between client and server so both sides can send messages at any time without opening a new HTTP request per event. It suits live dashboards, chat, collaborative editing, and streaming AI tokens.
Technical Architecture & Deep-Dive
HTTP is request-response: the client must poll or use server-sent events for server-pushed updates. WebSockets upgrade a single HTTP handshake into a long-lived socket, lowering latency and header overhead for high-frequency messages.
Browsers and mobile apps still need authentication, rate limits, and stable URLs while upstream WebSocket servers may sit behind firewalls or expose internal hosts. An edge gateway can terminate TLS, validate tokens, and proxy frames to the origin so clients connect to one public endpoint.
Key Architectural Benefits
Proxy Streaming APIs at the Edge
Terminate TLS, inject secrets, and forward live streams without exposing upstream sockets to every client.
Frequently Asked Questions
Q:When should I use WebSockets instead of REST?
Use WebSockets when the server must push many updates or the client sends frequent small messages. REST remains better for cacheable CRUD and simple request-response workflows.
Q:Can an edge proxy sit in front of WebSockets?
Yes. Edge runtimes can upgrade connections, authenticate clients, and forward WebSocket frames to upstream servers while hiding internal endpoints.
Related Architecture Concepts
Long polling is a technique where the client sends an HTTP request and the server holds the connection open until new data is available or a timeout occurs, then the client immediately opens the next request. It simulates server push over plain HTTP.
A REST API is a web interface that exposes data as resources identified by URLs and manipulated with standard HTTP methods such as GET, POST, PUT, and DELETE. Each request is stateless and responses are usually JSON, making REST the most common style for public and internal APIs.
An API Gateway is a single entry point that sits between client applications and backend services. It routes requests, enforces authentication and rate limits, transforms payloads, and aggregates responses so clients talk to one stable endpoint instead of many internal APIs.
Event-driven architecture is a design approach where services communicate by producing and consuming events, such as order placed or subscription canceled, rather than calling each other synchronously. Consumers react to events independently, which decouples systems and improves resilience.
Ready-to-Use Edge Recipes
Anthropic payloads are heavy for Frontend / Web. Edge strips rate limit headers and debug from streamed JSON chunks. RealComposer output mapping returns only the fields your UI needs at the edge.
You should not store Anthropic credentials in Next.js / React client code. Next.js client chat UI calls edge stream; Anthropic never touches browser. RealComposer Secret Vault injects headers on Cloudflare Workers so only your edge URL is public.
To solve lightweight api gateway for jamstack and static sites, never execute unauthenticated requests or embed private tokens directly in client bundles. RealComposer acts as a sub-10ms edge gateway running on Cloudflare Workers that securely injects credentials from your Secret Vault, normalizes responses, and prevents unauthorized API usage. Route calls through your RealComposer edge URL to guarantee complete privacy, robust origin validation, and low mobile latency.