feat add connections management and health summary improvements

backend/src/services/health_service.py

@@ -8,6 +8,7 @@
 # @RELATION: DEPENDS_ON -> backend.src.core.task_manager.cleanup.TaskCleanupService
 
 from typing import List, Dict, Any, Optional, Tuple
+import time
 from sqlalchemy.orm import Session
 from sqlalchemy import func, desc
 import os
@@ -24,6 +25,9 @@ from ..core.task_manager import TaskManager
 # @RELATION: CALLS -> backend.src.core.superset_client.SupersetClient
 # @RELATION: CALLS -> backend.src.core.task_manager.cleanup.TaskCleanupService
 class HealthService:
+    _dashboard_summary_cache: Dict[str, Tuple[float, Dict[str, Dict[str, Optional[str]]]]] = {}
+    _dashboard_summary_cache_ttl_seconds = 60.0
+
     """
     @PURPOSE: Service for managing and querying dashboard health data.
     """
@@ -77,15 +81,27 @@ class HealthService:
                 continue
 
             try:
-                dashboards = SupersetClient(env).get_dashboards_summary()
-                dashboard_meta_map = {
-                    str(item.get("id")): {
-                        "slug": item.get("slug"),
-                        "title": item.get("title"),
+                cached_meta = self.__class__._dashboard_summary_cache.get(environment_id)
+                cache_is_fresh = (
+                    cached_meta is not None
+                    and (time.monotonic() - cached_meta[0]) < self.__class__._dashboard_summary_cache_ttl_seconds
+                )
+                if cache_is_fresh:
+                    dashboard_meta_map = cached_meta[1]
+                else:
+                    dashboards = SupersetClient(env).get_dashboards_summary()
+                    dashboard_meta_map = {
+                        str(item.get("id")): {
+                            "slug": item.get("slug"),
+                            "title": item.get("title"),
+                        }
+                        for item in dashboards
+                        if str(item.get("id") or "").strip()
                     }
-                    for item in dashboards
-                    if str(item.get("id") or "").strip()
-                }
+                    self.__class__._dashboard_summary_cache[environment_id] = (
+                        time.monotonic(),
+                        dashboard_meta_map,
+                    )
                 for dashboard_id in dashboard_ids:
                     self._dashboard_meta_cache[(environment_id, dashboard_id)] = dashboard_meta_map.get(
                         dashboard_id,