11-20-2017
Middleware Documentation and logs
Good evening:
I need your help please, I am new in Unix/Linux apps like middleware
Thare are thousands of documentation about middleware stuff but i would like to have a broader understanding about middleware apps, so i ask you the following questions:
1. In an Enterprise what i am working for there are hundreds of applications and interacting via weblogic, tomcat apache and so on. And in an Unix/Linux environment is there any way i can find any log that stores any event for applicatios interaction or requests?
2. In unix/linux i can reach out logs/events that keeps track about Applications interactions?
3. Is there any good link about middleare or applications interactions events from the basics because frankly i have no idea
I would appreciate your help in advanced
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LEARN ABOUT DEBIAN
plack::middleware::stacktrace
Plack::Middleware::StackTrace(3pm) User Contributed Perl Documentation Plack::Middleware::StackTrace(3pm)
NAME
Plack::Middleware::StackTrace - Displays stack trace when your app dies
SYNOPSIS
enable "StackTrace";
DESCRIPTION
This middleware catches exceptions (run-time errors) happening in your application and displays nice stack trace screen. The stack trace is
also stored in the environment as a plaintext and HTML under the key "plack.stacktrace.text" and "plack.stacktrace.html" respectively, so
that middleware futher up the stack can reference it.
This middleware is enabled by default when you run plackup in the default development mode.
You're recommended to use this middleware during the development and use Plack::Middleware::HTTPExceptions in the deployment mode as a
replacement, so that all the exceptions thrown from your application still get caught and rendered as a 500 error response, rather than
crashing the web server.
Catching errors in streaming response is not supported.
CONFIGURATION
force
enable "StackTrace", force => 1;
Force display the stack trace when an error occurs within your application and the response code from your application is 500. Defaults
to off.
The use case of this option is that when your framework catches all the exceptions in the main handler and returns all failures in your
code as a normal 500 PSGI error response. In such cases, this middleware would never have a chance to display errors because it can't
tell if it's an application error or just random "eval" in your code. This option enforces the middleware to display stack trace even
if it's not the direct error thrown by the application.
no_print_errors
enable "StackTrace", no_print_errors => 1;
Skips printing the text stacktrace to console ("psgi.errors"). Defaults to 0, which means the text version of the stack trace error is
printed to the errors handle, which usually is a standard error.
AUTHOR
Tokuhiro Matsuno
Tatsuhiko Miyagawa
SEE ALSO
Devel::StackTrace::AsHTML Plack::Middleware Plack::Middleware::HTTPExceptions
perl v5.14.2 2011-07-08 Plack::Middleware::StackTrace(3pm)