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Index: D

daemontools web site: 5.12. References

_ _DATA_ _ token: 6.6.1. _ _END_ _ and _ _DATA_ _ Tokens

data reuse, POST requests: A.2. Reusing Data from POST Requests

data structures

complex, storage: 19.6.3. Storing Complex Data Structures

nested: 19.6.3. Storing Complex Data Structures

databases

Apache::DBI, locking risks: 20.1.5.1. Database locking risks

DBI module: 20. Relational Databases and mod_perl

modules: B. Apache Perl Modules

B.13.1. Apache::DBI—Initiate a Persistent Database Connection

persistent connections

Apache::DBI and: 20.1. Persistent Database Connections with Apache::DBI

Web interfaces: 20.1. Persistent Database Connections with Apache::DBI

relational databases, performance and: 20.2.5. Running Two or More Relational Databases

singleton handles: A.12. Singleton Database Handles

Data::Dumper, debugging and: 21.5.4. Using print( ) and Data::Dumper for Debugging

Data::Dumper::Dumper method: 19.6.3. Storing Complex Data Structures

date header: 16.1.1. Date Header

date-related headers

cache-control header: 16.1.3. Expires and Cache-Control Headers

date header: 16.1.1. Date Header

Expires header: 16.1.3. Expires and Cache-Control Headers

last-modified: 16.1.2. Last-Modified Header

DB_File module: 19. DBM and mod_perl

DB_File::Lock file-locking wrapper: 19.4. Locking Wrappers Overview

DB_File::Lock module, locking and: 19.6.2. Read/Write Access

DBI handler, Apache::DBI module and: 20.1.5.4. Cannot find the DBI handler

DBI module

Apache::DBI module and: 20.1.1. Apache::DBI Connections

databases and: 20. Relational Databases and mod_perl

debugging techniques: 20.3. DBI Debug Techniques

initialization: 10.1.5.1. Initializing DBI.pm

resources: 23.3.6. DBI and SQL

scripts: 20.1.5.2. Transactions

DBI statements, trace logs: 20.3. DBI Debug Techniques

DBM

access methods: 19. DBM and mod_perl

Berkeley DB: 19. DBM and mod_perl

buffers, flushing: 19.1. mod_perl and DBM

exclusive locks: 19.2. Resource Locking

file-locking wrappers: 19.4. Locking Wrappers Overview

file locks and: 19.1. mod_perl and DBM

files, closing modified: 19.1. mod_perl and DBM

flat-file databases and: 19. DBM and mod_perl

indexing algorithms: 19. DBM and mod_perl

Perl interfaces: 19. DBM and mod_perl

read/write access: 19.6.2. Read/Write Access

shared locks: 19.2. Resource Locking

dbm libraries, troubleshooting: 3.1.8.2. Missing or misconfigured libgdbm.so

deadlocks: 19.2.1. Deadlocks

debug tracing, enabling: 3.1.1. Controlling the Build Process

Debug::DumpCore module: 21.6.2. Creating a Faulty Package

Debug::FaultAutoBT module: 21.6.5. Extracting the Backtrace Automatically

debugger (perldb)

features: 21.5.6. Introduction to the Perl Debugger

debugging: 21.1.2. Curing "Internal Server Error" Problems

(see also error messages; troubleshooting)

-D option: 21.8.2. -D Runtime Option

Apache::DBI module: 20.1.4. Debugging Apache::DBI

Apache::FakeRequest module: 21.5.2. Using Apache::FakeRequest to Debug Apache Perl Modules

Apache::Registry scripts: 21.5.9. Interactive mod_perl Debugging

Apache::Status module: 9.4. Apache::Status and Measuring Code Memory Usage

avoiding bugs, coding style issues and: 21.5.5. The Importance of a Good, Concise Coding Style

AxKit: E.2.1. If Something Goes Wrong

backtrace

obtaining: 21.6.4. Analyzing the core File

obtaining automatically: 21.6.5. Extracting the Backtrace Automatically

client, sending information to: 21.8.5. Apache::Debug

configuration: 4.4.7. Debugging

core files

analyzing: 21.6.4. Analyzing the core File

dumping core file: 21.6.3. Dumping the core File

faulty packages, creating: 21.6.2. Creating a Faulty Package

preparation for: 21.6.1. Getting Ready to Debug

DBI module: 20.3. DBI Debug Techniques

Devel::ptkdb: 21.5.7. Interactive Perl Debugging Under mod_cgi

hanging processes, OS problems: 21.7.1. Hanging Because of an Operating System Problem

interactive: 21.5.9. Interactive mod_perl Debugging

hanging processes: 21.7.4.3. Using the interactive debugger

troubleshooting ptkdb: 21.5.9.1. ptkdb and interactive mod_perl debugging

Internal Server Error problems: 21.1.2. Curing "Internal Server Error" Problems

levels of complexity: 21.5. Debugging Perl Code

modules: B.2. Modules to Aid Debugging

multiple child process reloading problems: 6.2.2. The Second Mystery—Inconsistent Growth over Reloads

nested subroutine errors: 6.2.1. The First Mystery: Why Does the Script Go Beyond 5?

noninteractive: 21.5.8. Noninteractive Perl Debugging Under mod_perl

Perl code

overview: 21.5. Debugging Perl Code

syntax errors: 21.5.1. Locating and Correcting Syntax Errors

print( ) function and: 21.5.3. Using print( ) for Debugging

Data::Dumper: 21.5.4. Using print( ) and Data::Dumper for Debugging

Segmentation fault error: 21.6. Analyzing Dumped core Files

single process server mode and: 6.2.2. The Second Mystery—Inconsistent Growth over Reloads

single-server mode: 21.2. Debugging Code in Single-Server Mode

warnings

diagnostics pragma: 21.1.1.1. The diagnostics pragma

importance of: 21.1.1. The Importance of Warnings

warnings compared to errors: 21.1. Warnings and Errors Explained

XS code: 21.8.3. Devel::Peek and Apache::Peek

debugging macros: 21.7.5. mod_perl gdb Debug Macros

B::Deparse: 21.8.1. B::Deparse

debugging modules: B. Apache Perl Modules

declarative templates, XPathScript API: E.4.1.2. Declarative templates

degugger (perldb)

basic operation: 21.5.6. Introduction to the Perl Debugger

breakpoints: 21.5.6. Introduction to the Perl Debugger

listing: 21.5.6. Introduction to the Perl Debugger

removing: 21.5.6. Introduction to the Perl Debugger

enabling: 21.5.6. Introduction to the Perl Debugger

21.5.6. Introduction to the Perl Debugger

listing code lines: 21.5.6. Introduction to the Perl Debugger

single stepping: 21.5.6. Introduction to the Perl Debugger

Delete command: 21.5.6. Introduction to the Perl Debugger

deployment (server)

overview: 12.1. mod_perl Deployment Overview

standalone: 12.2. Standalone mod_perl-Enabled Apache Server

DESTROY method: 5.3.2. Speeding Up Apache's Termination and Restart

detaching forked processes: 10.2.3. Detaching the Forked Process

determining Perl version: 3.1. Configuring the Source

Devel::DProf module, code profiling and: 9.5.1. Profiling with Devel::DProf

development

multiple developers, starting personal servers for: 5.9.1. Starting a Personal Server for Each Developer

three-tier scheme: 5.9. Three-Tier Server Scheme: Development, Staging, and Production

development stage modules: B. Apache Perl Modules

B.1. Development-Stage Modules

development tier (server implementation)

configuration package: 5.9. Three-Tier Server Scheme: Development, Staging, and Production

overview: 5.9. Three-Tier Server Scheme: Development, Staging, and Production

development tools, mod_perl installation requirements: 2.1. Installing mod_perl 1.0 in Three Steps

Devel::Peek module: 21.8.3. Devel::Peek and Apache::Peek

preallocating memory: 10.1.6. Memory Preallocation

Devel::ptkdb: 21.5.7. Interactive Perl Debugging Under mod_cgi

Devel::SmallProf module, code profiling and: 9.5.2. Profiling with Devel::SmallProf

Devel::StackTrace module: 21.8.6. Other Debug Modules

Devel::Symdump module: 21.8.4. Devel::Symdump and Apache::Symdump

diagnostics pragma: 21.1.1.1. The diagnostics pragma

debugging code: 6.2.1. The First Mystery: Why Does the Script Go Beyond 5?

die( ): 6.4.2. die( )

errror messages and: 21.1.2. Curing "Internal Server Error" Problems

directives

Apache configuration: 4.1.2. Configuration Directives

Apache configuration file

<Directory> section: 4.1.3.1. <Directory directoryPath> ... </Directory>

<Files> section: 4.1.3.2. <Files filename > ... </Files>

AxAddDocTypeProcessor: E.6. Putting Everything Together

AxAddDTDProcessor: E.6. Putting Everything Together

AxAddRootProcessor: E.6. Putting Everything Together

AxAddURIProcessor: E.6. Putting Everything Together

configuration (Apache): 4.1.7. MinSpareServers, MaxSpareServers, StartServers, MaxClients, and MaxRequestsPerChild

configuration, scope: 4.6. The Scope of mod_perl Configuration Directives

environment variables, setting: 4.2.10. PerlSetEnv and PerlPassEnv

ErrorLog: 21.1.2. Curing "Internal Server Error" Problems

executing, stacked handlers: 4.2.7. Stacked Handlers

ListenBacklog: 1.2.1. Forking

MaxClients, setting: 11.1. Setting the MaxClients Directive

MaxRequestsPerChild: 1.2.1. Forking

setting: 11.2. Setting the MaxRequestsPerChild Directive

migrating mod_perl 1.0 to 2.0: 25.1.2.1. PerlHandler

mod_cgi, using in mod_perl: 4.2.12. PerlSetupEnv

Options, merging: 4.1.6. Options Directive Merging

PerlCleanupHandler: 10.2. Forking and Executing Subprocessesfrom mod_perl

PerlOptions, mod_perl configuration: 24.5.6. PerlOptions Directive

PerlWarn: 21.1.1. The Importance of Warnings

request loop: 4.2.4. Perl*Handlers

restarting server: 4.2.9. PerlFreshRestart

ScriptAlias (mod_cgi): 1.1.3. Apache CGI Handling with mod_cgi

Template Toolkit language: D.4. Template Toolkit Language

constructs: D.4.1. Simple Template Example

thread-mode-specific: 24.5.7. Thread-Mode-Specific Directives

directivesMaxRequestsPerChild: 6.4.1. exit( )

directories

automatically created, modifying names: 3.9.4. Making a Local Apache Installation

creating: 2.5. Preparing the Scripts Directory

default, changing during installation: 3.5.2. Building mod_perl and Apache Separately

@INC, locating: 2.7. A Simple mod_perl Content Handler

installing mod_perl: 2.2.1. Obtaining and Unpacking the Source Code

nonstandard

CPAN.pm and: 3.9.3. Using the CPAN.pm Shell with Nonstandard Installation Directories

identifying to Perl: 3.9.2. Finding Modules Installed in Nonstandard Directories

installing Perl modules to: 3.9.1. Installing Perl Modules into a Nonstandard Directory

modifying @INC variable: 3.9.2.1. Modifying @INC

modifying PERL5LIB variable: 3.9.2.2. Using the PERL5LIB environment variable

script locations, configuring: 2.5. Preparing the Scripts Directory

two server approach: 12.3.1. Choosing the Target Installation Directories Layout

<Directory> section (Apache configuration file): 4.1.3. <Directory>, <Location>, and <Files> Sections

4.1.3.1. <Directory directoryPath> ... </Directory>

disconnect( ) statements, Apache::DBI module and: 20.1.1. Apache::DBI Connections

discontinued products, operating sysem and: 8.1.7. Discontinued Products

DNS resolution, disabling: 11.8. Disabling DNS Resolution

documentation: 23.3.1. mod_perl

accessing: 6.1.1. Accessing Documentation

I/O filtering: 25.3. I/O Filtering

online: 6.1.1. Accessing Documentation

troubleshooting and: 23. Getting Help and Online Resources

documents, virtual: 4.2.1. Alias Configurations

DO_HTTPD configuration parameter: 3.1.1. Controlling the Build Process

downloading

files: 12.15. Uploading and Downloading Big Files

Template Toolkit: D.1. Fetching and Installing the Template Toolkit

DSO (dynamic shared object)

advantages/disadvantages: 3.1. Configuring the Source

compatibility: 3.1. Configuring the Source

mod_perl

building via APACI: 3.5.4. Building mod_perl as a DSO via APACI

building via APXS: 3.5.5. Building mod_perl as a DSO via APXS

support for: 3.1. Configuring the Source

USE_DSO configuration parameter: 3.1.1. Controlling the Build Process

when to use: 3.5.3. When DSOs Can Be Used

dump( ) function: 21.6.2. Creating a Faulty Package

dumping core file, debugging and: 21.6.3. Dumping the core File

dynamic configuration files: 6.8.2.4. Using dynamic configuration files

DYNAMIC configuration parameter: 3.1.1. Controlling the Build Process

dynamic shared object (DSO), support for: 3.1. Configuring the Source