Abstract

ire available space of a page. EOS employs the multigranularitytwoversion two phase locking protocol, that allows many readers and one writer to access the same item simultaneously. The option to switch to simple 2PL is also available. EOS uses a write-ahead redo-only logging scheme that o#ers short logs, fast recovery from system failures, and non-blocking checkpoints. Also, con#guration #les are provided that can be edited by users to customize and tune EOS performance. Finally, the EOS architecture has been designed to be extensible. Users may de#ne hook functions to be executed when certain primitiveevents occur. This allows controlled access to a numberofentry points in the system without compromising modularity. What is Next? EOS-2: Our experience in using EOS in real applications helped us identify existing system components that needed to be either re-architected or extended. Also, new functionality mainly in the area of distributed computing needed to be desig

Citations