reduce explicit db commits

db.py

@@ -27,13 +27,15 @@ class DB(object):
                 break
             except sqlite3.OperationalError as error:
                 # another thread may be writing, give it a chance to finish
-                sleep(0.5)
+                sleep(1)
                 logger.exception()
                 if time() - start_time > 5:
                     # if it takes this long, something is wrong
                     system("rcctl restart frontend_daemon")
                     logger.warning("frontend_daemon is getting restarted")
                     self.conn.commit()
+                elif time() - start_time > 10:
+                    return
 
     def close(self):
         self.conn.close()

user.py

@@ -158,7 +158,6 @@ schlitz
     def toot_witness(self, toot_uri):
         db.execute("INSERT INTO seen_toots (toot_uri, user_id) VALUES (?,?);",
                    (toot_uri, self.uid))
-        db.commit()
 
     def get_seen_tg(self):
         db.execute("SELECT tg_id FROM seen_telegrams WHERE user_id = ?;",
@@ -168,7 +167,6 @@ schlitz
     def save_seen_tg(self, tg_id):
         db.execute("UPDATE seen_telegrams SET tg_id = ? WHERE user_id = ?;",
                    (tg_id, self.uid))
-        db.commit()
 
     def get_mailinglist(self):
         db.execute("SELECT email FROM mailinglist WHERE user_id = ?;", (self.uid, ))
@@ -181,7 +179,6 @@ schlitz
     def save_seen_mail(self, mail_date):
         db.execute("UPDATE seen_mail SET mail_date = ? WHERE user_id = ?;",
                    (mail_date, self.uid))
-        db.commit()
 
     def set_trigger_words(self, patterns):
         db.execute("UPDATE triggerpatterns SET patterns = ? WHERE user_id = ?;",