add cache_is_valid property to query model

db/migrations/011_add_more_cache_is_valid_column_to_query_table.py

@@ -0,0 +1,20 @@
+"""Peewee migrations -- 011_add_more_cache_is_valid_column_to_query_table.py."""
+import peewee as pw
+from peewee_migrate import Migrator
+
+from db.models import Query
+
+
+def migrate(migrator: Migrator, database: pw.Database, fake=False, **kwargs):
+    """Write your migrations here."""
+    field = pw.BooleanField(null=False, default=True)
+    migrator.add_fields(
+        Query,
+        cache_is_valid=field,
+    )
+    migrator.run()
+
+
+def rollback(migrator: Migrator, database: pw.Database, fake=False, **kwargs):
+    """Write your rollback migrations here."""
+    migrator.remove_fields(Query, 'cache_is_valid', cascade=True)

db/models/query.py

@@ -10,6 +10,7 @@ class Query(Base):
     query_hash = peewee.CharField(index=True, null=False)
     query_string = peewee.TextField(null=False)
     count = peewee.IntegerField(null=False, default=0)
+    cache_is_valid = peewee.BooleanField(null=False, default=True)
     response = peewee.TextField(null=True)
 
     @staticmethod