Buffered Collection and Buffered Iterator Patterns

This paper describes implementation of a pair of patterns that improve performance of large collections and their iterators in distributed object systems through a combination of buffering and specialized inter-process communication techniques. The Buffered Collection and Buffered Iterator patterns provide a transparent mechanism for efficient transport of primitive data elements between collections residing in one address space and their clients residing in another. 1.0 Introduction Performance trade-offs between the use of distributed object systems such as CORBA based distributed object services and lower level networking interfaces such as sockets and TLI are often very apparent in network bandwidth-intensive applications. [1] provides discussions regarding performance trade-offs related to the use of various transport mechanisms over ethernet and ATM networks and suggests that for certain applications, the use of lower level interfaces may be required for performance reasons. Thi..