Function pool_stats 

pub async fn pool_stats(pool: Data<SharedPool>) -> impl Responder

Get browser pool statistics.

Returns real-time metrics about the browser pool including available browsers, active browsers, and total count.

Endpoint

GET /pool/stats

Response (200 OK)

{
    "available": 3,
    "active": 2,
    "total": 5
}

Field	Type	Description
available	number	Browsers ready to handle requests
active	number	Browsers currently in use
total	number	Total browsers (available + active)

Errors

Status	Code	Description
500	POOL_LOCK_FAILED	Failed to acquire pool lock

Use Cases

• Monitoring dashboards
• Prometheus/Grafana metrics
• Capacity planning
• Debugging pool exhaustion

Usage in App

App::new()
    .app_data(web::Data::new(pool.clone()))
    .route("/pool/stats", web::get().to(pool_stats))