NonStop Servlets for JavaServer Pages (NSJSP) 6.1 System Administrator's Guide

Introduction to NSJSP

NonStop Servlets for JavaServer Pages (NSJSP) 6.1 System Administrator’s Guide—596210-006

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NSJSP Architecture

In Figure 1-9, NSJSP architecture shows the following:



An iTP Secure WebServer installation in a TS/MP environment with a PATHMON,

called $zweb. The iTP Secure WebServer Server Class has multiple HTTPD

processes distributed across four CPUs.



A single NSJSP installation in this iTP Secure WebServer environment. The

NSJSP installation also comprises multiple NSJSP processes distributed across

the four CPUs.



The HTTPD processes communicate with NSJSP processes using either Pathsend

Application Programming Interface (API) or the filesystem API.

The following is the sequence of events that occur in the processing of an HTTP

request by NSJSP:

Figure 1-9. NSJSP Architecture

$zweb

iTPSecure

WebServer

TS/MPorFilesystemcalls

HTTPD

CPU 1 CPU 2 CPU 3

CPU 4

Network

$zweb

iTPSecure

WebServer

PathsendorFilesystemAPI

HTTPD

CPU 0 CPU 1 CPU 2

CPU 3

NSJSP Installation

TCP/IPv6

NSJSP

NSJSPNSJSP