diff --git a/api/orders.py b/api/orders.py
--- a/api/orders.py
+++ b/api/orders.py
@@ -8,12 +8,16 @@ router = APIRouter()

 @router.get("/orders")
-def list_orders(limit: int = 50, offset: int = 0, db=Depends(get_db)):
-    return db.query(Order).order_by(Order.id).offset(offset).limit(limit).all()
+def list_orders(page_size: int = 50, offset: int = 0, include_archived: bool = False, db=Depends(get_db)):
+    q = db.query(Order)
+    if not include_archived:
+        q = q.filter(Order.archived_at.is_(None))
+    return q.order_by(Order.id).offset(offset).limit(page_size).all()
diff --git a/jobs/archive.py b/jobs/archive.py
new file mode 100644
--- /dev/null
+++ b/jobs/archive.py
@@ -0,0 +1,14 @@
+import os
+from datetime import datetime, timedelta, timezone
+
+from models import Order
+
+ARCHIVE_DAYS = int(os.environ["ORDERS_ARCHIVE_DAYS"])
+
+
+def archive_old_orders(db):
+    cutoff = datetime.now(timezone.utc) - timedelta(days=ARCHIVE_DAYS)
+    n = db.query(Order).filter(Order.closed_at < cutoff, Order.archived_at.is_(None)).update(
+        {"archived_at": datetime.now(timezone.utc)})
+    db.commit()
+    return n
diff --git a/migrations/versions/0042_orders_archived_at.py b/migrations/versions/0042_orders_archived_at.py
new file mode 100644
--- /dev/null
+++ b/migrations/versions/0042_orders_archived_at.py
@@ -0,0 +1,16 @@
+import sqlalchemy as sa
+from alembic import op
+
+revision = "0042"
+down_revision = "0041"
+
+
+def upgrade():
+    op.add_column("orders", sa.Column("archived_at", sa.DateTime(timezone=True), nullable=True))
+    op.create_index("ix_orders_archived_at", "orders", ["archived_at"])
+
+
+def downgrade():
+    op.drop_index("ix_orders_archived_at", "orders")
+    op.drop_column("orders", "archived_at")
diff --git a/models.py b/models.py
--- a/models.py
+++ b/models.py
@@ -14,3 +14,4 @@ class Order(Base):
     closed_at = Column(DateTime(timezone=True))
+    archived_at = Column(DateTime(timezone=True), nullable=True, index=True)
diff --git a/core/logging.py b/core/logging.py
--- a/core/logging.py
+++ b/core/logging.py
@@ -1,9 +1,15 @@
-import logging
+import json
+import logging


-def setup():
-    logging.basicConfig(level=logging.INFO, format="%(asctime)s %(levelname)s %(message)s")
+class JsonFormatter(logging.Formatter):
+    def format(self, record):
+        return json.dumps({"ts": self.formatTime(record), "level": record.levelname, "msg": record.getMessage()})
+
+
+def setup():
+    handler = logging.StreamHandler()
+    handler.setFormatter(JsonFormatter())
+    logging.basicConfig(level=logging.INFO, handlers=[handler])
diff --git a/tests/test_orders.py b/tests/test_orders.py
--- a/tests/test_orders.py
+++ b/tests/test_orders.py
@@ -30,3 +30,10 @@ def test_list_orders_default(client):
     assert len(client.get("/orders").json()) == 50
+
+
+def test_archived_orders_hidden_by_default(client, archived_order):
+    ids = [o["id"] for o in client.get("/orders").json()]
+    assert archived_order.id not in ids
+    ids = [o["id"] for o in client.get("/orders?include_archived=true").json()]
+    assert archived_order.id in ids