Release 1.6.2

app/routes/api.py

@@ -1,6 +1,7 @@
 from datetime import datetime, timedelta
 import hashlib
 import json
+import os
 import time
 import re
 from urllib.parse import urlparse
@@ -20,7 +21,18 @@ MAX_ACTIVE_SESSIONS_PER_DISPLAY = 3
 SESSION_TTL_SECONDS = 90
 
 # RSS ticker cache (in-memory; OK for this small app; avoids hammering feeds)
-TICKER_CACHE_TTL_SECONDS = 120
+#
+# Default is intentionally long because displays can refresh headlines on a long interval
+# (e.g., twice per day) and we don't want many displays to re-fetch the same feed.
+# Override via env var `TICKER_CACHE_TTL_SECONDS`.
+def _env_int(name: str, default: int) -> int:
+    try:
+        return int(os.environ.get(name, "") or default)
+    except (TypeError, ValueError):
+        return default
+
+
+TICKER_CACHE_TTL_SECONDS = max(10, _env_int("TICKER_CACHE_TTL_SECONDS", 6 * 60 * 60))
 _TICKER_CACHE: dict[str, dict] = {}