Embodiments of the present invention provide a method and an apparatus for storing data, which relate to the field of data processing. In the present invention, a current device is divided into different load modes in the process of service processing, and manners of storing various data in a Cache are dynamically adjusted, so that nodes with different characteristics in the current device may control operations on the Cache, thus achieving lower power consumption and optimum performance of a large-capacity system under a heavy load.