spring-webfluxlisted

# Spring WebFlux Reactive endpoints via RouterFunctions + Handlers. Prefer over `@RestController` in WebFlux for testability. ## Quick start (Handler + RouterFunction) ```java @Component @RequiredArgsConstructor public class UserHandler { private final UserService service; public Mono<ServerResponse> create(ServerRequest req) { return req.bodyToMono(CreateUserRequest.class) .flatMap(service::create) .flatMap(user -> ServerResponse.status(HttpStatus.CREATED).bodyValue(user)); } public Mono<ServerResponse> get(ServerRequest req) { String id = req.pathVariable("id"); return service.findById(id) .flatMap(user -> ServerResponse.ok().bodyValue(user)) .switchIfEmpty(ServerResponse.notFound().build()); } } @Configuration public class UserRouterConfig { @Bean public RouterFunction<ServerResponse> userRoutes(UserHandler h) { return RouterFunctions.route() .path("/users", b -> b .GET("/{id}", h::get) .POST("", accept(MediaType.APPLICATION_JSON), h::create)) .build(); } } ``` Detailed: `references/router-handler-pattern.md`, `references/schedulers.md`, `references/context-propagation.md`, `references/stepverifier-testing.md`, `references/anti-patterns.md`. ## Assets - `assets/templates/Handler.java.tmpl` - `assets/templates/RouterConfig.java.tmpl` ## Hard rules - NEVER `.block()` in reactive chain. NEVER `Thread