cache more aggressively: bump expiration up to 60s, threshold to 3k

for #378

common.py

@@ -73,7 +73,7 @@ DOMAIN_BLOCKLIST = frozenset((
 
 _DEFAULT_SIGNATURE_USER = None
 
-CACHE_TIME = timedelta(seconds=10)
+CACHE_TIME = timedelta(seconds=60)
 PAGE_SIZE = 20
 
 

config.py

@@ -11,6 +11,7 @@ SESSION_COOKIE_HTTPONLY = True
 # Not strict because we flash messages after cross-site redirects for OAuth,
 # which strict blocks.
 SESSION_COOKIE_SAMESITE = 'Lax'
+CACHE_THRESHOLD = 3000
 
 if appengine_info.DEBUG:
   ENV = 'development'