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Shared state across multiple servers
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| use std::sync::{RwLock}; | |
| use futures::future; | |
| use actix_web::{web, App, HttpServer}; | |
| struct AppStateWithCounter { | |
| counter: RwLock<i32>, | |
| } | |
| async fn write(data: web::Data<AppStateWithCounter>) -> String { | |
| let mut counter = data.counter.write().unwrap(); | |
| *counter += 1; | |
| format!("Request number: {}", counter) // <- response with count | |
| } | |
| async fn read(data: web::Data<AppStateWithCounter>) -> String { | |
| let counter = data.counter.read().unwrap(); | |
| format!("Request number: {}", counter) // <- response with count | |
| } | |
| #[actix_rt::main] | |
| async fn main() -> std::io::Result<()> { | |
| let counter = web::Data::new(AppStateWithCounter { | |
| counter: RwLock::new(0), | |
| }); | |
| let s1 = HttpServer::new(move || { | |
| // move counter into the closure | |
| App::new() | |
| .app_data(counter.clone()) | |
| .route("/", web::get().to(write)) | |
| }) | |
| .bind("127.0.0.1:8000")? | |
| .run(); | |
| let s2 = HttpServer::new(move || { | |
| App::new() | |
| .app_data(counter.clone()) | |
| .route("/", web::get().to(read)) | |
| }) | |
| .bind("127.0.0.1:9000")? | |
| .run(); | |
| future::try_join(s1, s2).await; | |
| Ok(()) | |
| } |
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