1. A method, comprising: performing, by an application, an application write; in response to the application write, intercepting, by a cache management software, the application write and storing, by the cache management software, the application write into a local cache; after performing the application write, subsequently performing, by the application, a system call to request an underlying storage system to persist any application writes that are not yet persisted; wherein the system call comprises a fsync system call or a fdatasync system call; and in response to the system call, copying, by the cache management software, the application write in the local cache to a shared permanent storage so that the application write is stored in the shared permanent storage, wherein the shared permanent storage is shared by a plurality of servers.