diff --git a/app/scodoc/sco_cache.py b/app/scodoc/sco_cache.py
index e72ee1bd1..ddb8eb3cb 100644
--- a/app/scodoc/sco_cache.py
+++ b/app/scodoc/sco_cache.py
@@ -67,7 +67,7 @@ class ScoDocCache:
     keys are prefixed by the current departement: g.scodoc_dept MUST be set.
     """
 
-    timeout = None  # ttl, infinite by default
+    timeout = 3600  # ttl, one hour by default
     prefix = ""
     verbose = False  # if true, verbose logging (debug)
 
@@ -201,7 +201,7 @@ class AbsSemEtudCache(ScoDocCache):
     """
 
     prefix = "ABSE"
-    timeout = 60 * 60  # ttl 60 minutes
+    timeout = 600  # ttl 10 minutes
 
 
 class SemBulletinsPDFCache(ScoDocCache):
@@ -233,7 +233,6 @@ class SemInscriptionsCache(ScoDocCache):
     """
 
     prefix = "SI"
-    duration = 12 * 60 * 60  # ttl 12h
 
 
 class TableRecapCache(ScoDocCache):
@@ -243,7 +242,6 @@ class TableRecapCache(ScoDocCache):
     """
 
     prefix = "RECAP"
-    duration = 12 * 60 * 60  # ttl 12h
 
 
 class TableRecapWithEvalsCache(ScoDocCache):
@@ -253,7 +251,6 @@ class TableRecapWithEvalsCache(ScoDocCache):
     """
 
     prefix = "RECAPWITHEVALS"
-    duration = 12 * 60 * 60  # ttl 12h
 
 
 class TableJuryCache(ScoDocCache):
@@ -263,7 +260,6 @@ class TableJuryCache(ScoDocCache):
     """
 
     prefix = "RECAPJURY"
-    duration = 12 * 60 * 60  # ttl 12h
 
 
 class TableJuryWithEvalsCache(ScoDocCache):
@@ -273,7 +269,6 @@ class TableJuryWithEvalsCache(ScoDocCache):
     """
 
     prefix = "RECAPJURYWITHEVALS"
-    duration = 12 * 60 * 60  # ttl 12h
 
 
 def invalidate_formsemestre(  # was inval_cache(formsemestre_id=None, pdfonly=False)