Khazana: An Infrastructure for Building Distributed Services

Essentially all distributed systems applications and services at some level boil down to the problem of man aging distributed shared state Unfortunately while the problem of managing distributed shared state is shared by many applications there is no common means of managing the data every application devises its own solution We have developed Khazana a distributed service exporting the abstraction of a distributed per sistent globally shared store that applications can use to store their shared state Khazana is responsible for performing many of the common operations needed by distributed applications including replication consis tency management fault recovery access control and location management Using Khazana as a form of middleware distributed applications can be quickly de veloped from corresponding uniprocessor applications through the insertion of Khazana data access and syn chronization operations