[BE] Log number of active/idle connections to investigate #37

backend/src/main.rs

@@ -51,7 +51,12 @@ pub async fn db() -> Result<&'static Pool<MySql>, String> {
 
     for _ in 0..attempts {
         match DB.get() {
-            Some(db) => return Ok(db),
+            Some(db) => {
+                log::info!("DB active connections: {}", db.size());
+                log::info!("DB num_idle connections: {}", db.num_idle());
+
+                return Ok(db)
+            },
             None => {
                 log::info!("DB not initialized, initializing from db()");
                 let _ = init_db().await;