prashanth(at)jibenetworks(dot)com writes:
> I found some messages in 03/2002 that also brought up the performance
> issue. You had suggested the use of shared-memory, and made reference
> to a "SI model". I did find see any alternative non-table-based
> suggestions. What is the "SI model"?
I meant following the example of the existing shared-cache-invalidation
signaling mechanism --- see
src/backend/storage/ipc/sinvaladt.c
src/backend/storage/ipc/sinval.c
src/include/storage/sinvaladt.h
src/include/storage/sinval.h
regards, tom lane