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IWSSessionManager
58 iPlanet Web Server, Enterprise Edition Programmer’s Guide to Servlets • May 2001
IWSSessionManager
The IWSSessionManager is the default session manager.
IWSSessionManager works in both single process and multi-process mode. It can
be used for sharing session information across multiple processes possibly running
on different machines. The
MaxProcs directive in the magnus.conf file determines
whether the server is running in single process mode or multi-process mode. For
more information, see the NSAPI Programmer’s Guide for iPlanet Web Server.
For session persistence,
IWSSessionManager can use a database or a distributed
file system (DFS) path that is accessible from all servers in a server farm. Each
session is serialized to the database or distributed file system. You can also create
your own persistence mechanism.
If iPlanet Web Server is running in single-process mode, then by default, no session
persistence mode is defined and therefore sessions are not persistent.
If iPlanet Web Server is running in multi-process mode, sessions are persistent by
default. If a persistence mode is not defined,
IWSSessionManager uses a DFS.
Multi-process mode is supported only on Unix platforms. All multi-process mode
features of
IWSSessionManager are ignored on Windows NT.
Parameters for IWSSessionManager
IWSSessionManager takes the following parameters:
•
maxSessions - the maximum number of sessions maintained by the session
manager at any given time. The session manager refuses to create any more
new sessions if there are already
maxSessions number of sessions present at
that time. The default value is 1000.
•
timeOut - the amount of time in seconds after a session is accessed by the client
before the session manager destroys it. Those sessions that haven’t been
accessed for at least
timeOut seconds are destroyed by the reaper method. The
default value is 1800 (30 minutes).
If
session-timeout is specified in web.xml, it overrides this timeOut
parameter value. For details, see “session-timeout,” on page 15.
•
reapInterval - the amount of time in seconds that the SessionReaper thread
sleeps before calling the
reaper method again. The default value is 600 (10
minutes).
- Version 6.0 1
- Contents 3
- Contents 5 5
- About This Book 7
- Servlets and JavaServer Pages 9
- Servlets 10
- JavaServer Pages 10
- Web Applications 13
- Dynamic Reconfiguration 14
- Example server.xml File 16
- Example web-apps.xml File 18
- /intl/encoding.doc.html 22
- Web Application Examples 29
- Using Servlets 31
- Using the User Interface 32
- Enabling Servlets 32
- The <SERVLET> SHTML Tag 33
- Servlet Output 34
- Configuring JVM 35
- Using JavaServer Pages 37
- Configuring JRE/JDK Paths 39
- Enabling JSPs 42
- Deleting Cache Version Files 42
- The JSP Command-Line Compiler 43
- Compiler 46
- Debugging Servlets and JSPs 49
- JSP Debugging 50
- JPDA Options for Debugging 53
- Session Managers 55
- Specifying a Session Manager 56
- IWSSessionManager 58
- Enabling IWSSessionManager 61
- /net/dotcom.com/sessions 62
- Parameters 63
- Enabling MMapSessionManager 63
- Deprecated Session Managers 65
- JdbcSessionManager 66
- Enabling JdbcSessionManager 68
- API Clarifications 71
- <vs> 72
- </vs> 72
- HttpServlet.service 73
- ServletContext.getAttribute 73
- ServletRequest.setAttribute 73
- ServletRequest.getParameter 74
- Clarification 75
- Other Useful Information 77
- Legacy Servlet and JSP 79
- Configuration 79
- Enabling Servlets and JSP 80
- Virtual Servlet Path Example 84
- Legacy Configuration Files 87
- Legacy Examples 93
- Appendix A 95
- Objects in obj.conf 96
- JSP Directives 98
- Converting SSJS Applications 99
- JavaScript Java 100
- Conversion Steps 102
- Example Conversion 103
- JVM Configuration 105
- Remote Servlet Profiling 113
- The HPROF Profiler 114
- Index 119 119
- Index 121 121
- Index 123 123
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