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Tikam Alma
Tikam Alma

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How to make Apache2 server faster - Part-02 [Implementation]

#devops #tutorials #productivity

I will explain here how to increase latency of apache2 server,using Django deployment example.At the end of the article you'll get to know that this can be applies to any backend server be it Django or node server.

Installing mod_wsgi the easy way 

pip install mod_wsgi
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mod_wsgi - module for apache web server

No Apache Configuration Required 

$ mod_wsgi-express start-server hello.wsgi
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Django Framework Integration

INSTALLED_APPS = [

'django.contrib.admin',

'django.contrib.auth',

.....

.....

'mod_wsgi.server',

]

Send logging to terminal

settings.py

LOGGING = {
    #  ... omitting the formatters and handlers for brevity ...
    'loggers': {
        # ...  you may have other loggers here as well ...
        'django': {
            'handlers': ['name_of_your_file_handler_goes_here'],
            'level': 'DEBUG',
            'propagate': True,
        }
    }
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Or

LOGGING = {
        'version':1,
        'disable_existing_loggers': False,
        'handlers': {
                'console': {
                        'class' : 'logging.StreamHandler',
                 },
            },
            'loggers' : {
                    'django' : {
                            'handlers' : ['console'],
                            'level' : os.getenv('DJANGO_LOG_LEVEL','INFO'),
                    },
                },
    }
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Run Django With Management command 

python [manage.py](http://manage.py) runmodwsgi
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Automatic code reloading 

python [manage.py](http://manage.py) runmodwsgi —reload-on-changes
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Django DEBUG settings

settings.py

if os.environ.get('MOD_WSGI_DEBUG_MODE'):
        DEBUG = True

if os.environ.get('MOD_WSGI_DEBUGGER_ENABLED'):
        DEBUG_PROPAGATE_EXCEPTIONS = True
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Interactive Debugger 

python [manage.py](http://manage.py) runmodwsgi —enable-debugger
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Production configuration 

python [manage.py](http://manage.py) runmodwsgi \
--server-root /etc/wsgi-port-80  \
--user www-data --group www-data\
--port 80  --setup-only
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/etc/wsgi-port-80/apachectl start 
/etc/wsgi-port-80/apachectl restart 
/etc/wsgi-port-80/apachectl stop
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Use daemon mode of mod_wsgi 

WSGIRestrictedEmbedded On
WSGIDaemonProcess myapp python-home=/../env

WSGIScriptAlias / /../src/wsgi.py \ 
        process-group=myapp application-group=%{GLOBAL}

<Directory /../src>
        <Files wsgi.py>
        Require all granted
        </Files>
</Directory>
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Just add whatever the backend server Django or Node anything, putting this above virtualhost on line-1 will boost your latency.

WSGIRestrictedEmbedded On
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Resources:

https://youtu.be/H6Q3l11fjU0

mod_wsgi - mod_wsgi 4.8.0 documentation

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