added cache to prevent the server from blocking itself if too many requests

src/main.rs

@@ -1,13 +1,17 @@
 use axum::{Router, routing::get};
 use clap::Parser;
 use lazy_static::lazy_static;
-use std::sync::Arc;
+use std::{
+    sync::Arc,
+    time::{Duration, Instant},
+};
 use tera::Tera;
+use tokio::sync::RwLock;
 
 mod handlers;
 use handlers::home_handler;
 
-use crate::handlers::{analytics_handler, report_details_handler};
+use crate::handlers::{Report, analytics_handler, report_details_handler};
 
 lazy_static! {
     pub static ref TEMPLATES: Tera = {
@@ -43,8 +47,15 @@ pub struct Cli {
     verbose: bool,
 }
 
+pub struct Cache<T> {
+    pub data: T,
+    pub updated_at: Instant,
+}
+
 struct AppState {
     app_name: String,
+    pub reports_cache: RwLock<Option<Cache<Vec<Report>>>>,
+    pub cache_duration: Duration,
 }
 
 #[tokio::main]
@@ -57,6 +68,8 @@ async fn main() -> anyhow::Result<()> {
 
     let shared_state = Arc::new(AppState {
         app_name: "Slimes Leaderboards".to_string(),
+        reports_cache: RwLock::new(None),
+        cache_duration: Duration::from_secs(30),
     });
 
     let app = Router::new()