Database Reference
In-Depth Information
Fast Channel Architecture
Fast channel architecture (FCA) is an interprocess communication based on shared memory,
allowing quick failover and redirection of user requests.
Figure 3-5
shows the FCA and the
SAP JVM in the Java instance.
F
IGURE
3-5
NW 7.1 fast channel architecture
Shared Memory (Now Part of Java Instance)
The Java instance now includes shared memory and is used to keep the yet-to-be-processed
user requests in a queue. In the event the Java server process crashes, the pending queue is
not lost along with the server process. Since shared memory is part of the Java instance, it
will survive the crash and ICM will redirect the queue to another healthy Java server process
in the cluster for execution. This will improve overall stability, dependability, scalability,
and performance of the Java applications.
