I have devel query log / page execution time enabled on my site and most of the queries which are slowing down my site are related to DrupalDatebaseCache.
Sample Query :
UPDATE cache SET serialized=:db_update_placeholder_0, created=:db_update_placeholder_1, expire=:db_update_placeholder_2, data=:db_update_placeholder_3 WHERE ( (cid = :db_condition_placeholder_0) )
INSERT INTO cache_menu (cid, serialized, created, expire, data) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4)
Any clue what drupal is doing with caching and how to minimize it . thanks
I installed Memcache but still DrupalDatabaseCache calls are being made which is making the site slow .