Experimental caching (#285)

Added some caching decoraterors to speedup page delivery.

src/aki_prj23_transparenzregister/ui/data_elements.py

@@ -65,6 +65,10 @@ def get_finance_data(session: Session) -> pd.DataFrame:
     return pd.read_sql(str(query_finance), engine)
 
 
+@cached(  # type: ignore
+    cache=TTLCache(maxsize=100, ttl=600),
+    key=lambda session, company_id: hash((company_id, str(session.bind))),
+)
 def get_finance_data_of_one_company(session: Session, company_id: int) -> pd.DataFrame:
     """Collects all available finance data of one company.
 

src/aki_prj23_transparenzregister/ui/header_elements.py

@@ -1,9 +1,9 @@
 """Header elements for Dash."""
-
+from cachetools import TTLCache, cached
 from dash import dcc, html
 
 
-def create_header(options: dict) -> html:
+def create_header(options: dict[int, str]) -> html:
     """Creates header for dashboard.
 
     Args:
@@ -51,7 +51,10 @@ def create_header(options: dict) -> html:
     )
 
 
-def create_selection_header(selected_name: str) -> html:
+@cached(
+    cache=TTLCache(maxsize=100, ttl=600), key=lambda selected_name: hash(selected_name)  # type: ignore
+)
+def create_selection_header(selected_name: str) -> html.Div:
     """Create company header based on selected company.
 
     Args:

src/aki_prj23_transparenzregister/ui/pages/company.py

@@ -1,5 +1,6 @@
 """Company detail page."""
 import dash
+from cachetools import TTLCache, cached
 from dash import html
 
 from aki_prj23_transparenzregister.ui import (
@@ -14,6 +15,7 @@ dash.register_page(
 )
 
 
+@cached(cache=TTLCache(maxsize=100, ttl=600), key=lambda value: hash(value))  # type: ignore
 def layout(value: str = "1") -> html:
     """Defines the layout of the company page.
 

src/aki_prj23_transparenzregister/ui/pages/person.py

@@ -1,5 +1,6 @@
 """Person detail page."""
 import dash
+from cachetools import TTLCache, cached
 from dash import html
 
 from aki_prj23_transparenzregister.ui import data_elements, header_elements
@@ -10,7 +11,8 @@ dash.register_page(
 )
 
 
-def layout(value: str = "1") -> html:
+@cached(cache=TTLCache(maxsize=100, ttl=60), key=lambda value: hash(value))  # type: ignore
+def layout(value: str = "1") -> html.Div:
     """Defines the layout of the person detail page.
 
     Args:
@@ -27,9 +29,5 @@ def layout(value: str = "1") -> html:
     person_id = int(value)
     # get all necessary data of the selected person
     selected_person_stats = data_elements.get_person_data(session).loc[person_id]
-    selected_person_name = (
-        selected_person_stats["person_firstname"]
-        + " "
-        + selected_person_stats["person_lastname"]
-    )
+    selected_person_name = f"{selected_person_stats['person_firstname']} {selected_person_stats['person_lastname']}"
     return header_elements.create_selection_header(selected_person_name)