HP Integrity NonStop H-Series - Manual (Page 65)

4 Configuring Spring Applications on NonStop Systems
This chapter provides information about configuring Spring applications on NonStop systems.
This chapter includes the following sections:
• NonStop Platform Configurations
• Spring Framework Configurations
• Module File Caching Configurations
NonStop Platform Configurations
On a NonStop system, an application developed using the Spring framework is deployed as a
web application under the NSJSP container. Thus, it inherits all the NSJSP properties and
configurations, and runs like any other NSJSP web application running on a NonStop system.
This section discusses the following tasks:
• Determining the Application Parameters
• Determining the Maximum Capacity of NSJSP Instance
• Configuring iTP WebServer for Spring Applications
• Configuring NSJSP for Spring Applications
Determining the Application Parameters
You need to determine the following parameters of your application:
• Average Response Time
• Average Load
• Maximum Load
For a unit response time, the number of active requests to the iTP WebServer is a maximum of
its static capacity during the average load conditions. During peak load conditions, the number
of active requests to the iTP WebServer is a maximum of its dynamic capacity.
For example,
If the average response time of your Spring application is 1 second and the iTP WebServer is
configured to handle 100 requests statically and 50 requests dynamically, then during average
load conditions, the number of active requests to the iTP WebServer can be a maximum of 100.
During peak load conditions, 50 more requests can be served dynamically and hence, the active
requests to the iTP WebServer can be a maximum of 150. Further requests are queued up and
remain inactive until started by
httpd .
The other parameters, Average Load and Maximum Load, help you decide the configuration of
the static and dynamic
httpd processes of the iTP WebServer.
Determining the Maximum Capacity of NSJSP Instance
Before configuring NSJSP parameters, you must determine the capacity of a single instance of
NSJSP. To determine the maximum load for a single instance of NSJSP, it is important to first
configure the relevant TS/MP and server parameters of NSJSP (of the single instance) to their
maximum limit in the following way:
1. Set the value of Numstatic to 1. This limits the number of static instances of NSJSP to 1.
2. Set the value of Maxservers to 1. This limits the number of NSJSP instances that can be
started to 1. This implies that TS/MP cannot start more than one instance of NSJSP.
3. Set the value of Maxlinks to 250. This is the maximum number of links to the server process
(NSJSP process). This means that the server process must be capable of processing 250
requests simultaneously.
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