global: speed improvement part2

crates/brk_server/src/state.rs

@@ -189,8 +189,26 @@ impl AppState {
         F: FnOnce(&brk_query::Query) -> brk_error::Result<T> + Send + 'static,
     {
         self.cached(headers, strategy, uri, "application/json", move |q, enc| {
+            let t0 = std::time::Instant::now();
             let value = f(q)?;
-            Ok(enc.compress(Bytes::from(serde_json::to_vec(&value).unwrap())))
+            let t_query = t0.elapsed();
+            let json = serde_json::to_vec(&value).unwrap();
+            let t_json = t0.elapsed();
+            let json_len = json.len();
+            let compressed = enc.compress(Bytes::from(json));
+            let t_total = t0.elapsed();
+            if t_total.as_millis() > 100 {
+                eprintln!(
+                    "[perf] query={:.1?} json={:.1?}({:.1}MB) compress={:.1?}({}) total={:.1?}",
+                    t_query,
+                    t_json - t_query,
+                    json_len as f64 / 1_048_576.0,
+                    t_total - t_json,
+                    enc.as_str(),
+                    t_total,
+                );
+            }
+            Ok(compressed)
         })
         .await
     }