diff --git a/tasks/melnikov-ky/lab_4/.idea/.gitignore b/tasks/melnikov-ky/lab_4/.idea/.gitignore
new file mode 100644
index 0000000..26d3352
--- /dev/null
+++ b/tasks/melnikov-ky/lab_4/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/tasks/melnikov-ky/lab_4/.idea/.name b/tasks/melnikov-ky/lab_4/.idea/.name
new file mode 100644
index 0000000..9edcde9
--- /dev/null
+++ b/tasks/melnikov-ky/lab_4/.idea/.name
@@ -0,0 +1 @@
+receive.py
\ No newline at end of file
diff --git a/tasks/melnikov-ky/lab_4/.idea/inspectionProfiles/profiles_settings.xml b/tasks/melnikov-ky/lab_4/.idea/inspectionProfiles/profiles_settings.xml
new file mode 100644
index 0000000..105ce2d
--- /dev/null
+++ b/tasks/melnikov-ky/lab_4/.idea/inspectionProfiles/profiles_settings.xml
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/tasks/melnikov-ky/lab_4/.idea/misc.xml b/tasks/melnikov-ky/lab_4/.idea/misc.xml
new file mode 100644
index 0000000..f715fb8
--- /dev/null
+++ b/tasks/melnikov-ky/lab_4/.idea/misc.xml
@@ -0,0 +1,7 @@
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/tasks/melnikov-ky/lab_4/.idea/modules.xml b/tasks/melnikov-ky/lab_4/.idea/modules.xml
new file mode 100644
index 0000000..9b2ca55
--- /dev/null
+++ b/tasks/melnikov-ky/lab_4/.idea/modules.xml
@@ -0,0 +1,8 @@
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/tasks/melnikov-ky/lab_4/.idea/python4Lab.iml b/tasks/melnikov-ky/lab_4/.idea/python4Lab.iml
new file mode 100644
index 0000000..74d515a
--- /dev/null
+++ b/tasks/melnikov-ky/lab_4/.idea/python4Lab.iml
@@ -0,0 +1,10 @@
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/tasks/melnikov-ky/lab_4/.idea/vcs.xml b/tasks/melnikov-ky/lab_4/.idea/vcs.xml
new file mode 100644
index 0000000..c2365ab
--- /dev/null
+++ b/tasks/melnikov-ky/lab_4/.idea/vcs.xml
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/tasks/melnikov-ky/lab_4/MainTask/Consumer_1.py b/tasks/melnikov-ky/lab_4/MainTask/Consumer_1.py
new file mode 100644
index 0000000..ba5e8c8
--- /dev/null
+++ b/tasks/melnikov-ky/lab_4/MainTask/Consumer_1.py
@@ -0,0 +1,20 @@
+import pika
+import time
+
+def process_message(ch, method, properties, body):
+ print(f"Получено сообщение: {body}")
+ time.sleep(3)
+ print("Сообщение успешно обработано")
+
+connection = pika.BlockingConnection(pika.ConnectionParameters('localhost'))
+channel = connection.channel()
+
+result = channel.queue_declare(queue='', exclusive=True)
+queue_name = result.method.queue
+
+channel.queue_bind(exchange='Agreements', queue=queue_name)
+
+channel.basic_consume(queue=queue_name, on_message_callback=process_message, auto_ack=True)
+
+print('Ожидание сообщений...')
+channel.start_consuming()
\ No newline at end of file
diff --git a/tasks/melnikov-ky/lab_4/MainTask/Consumer_2.py b/tasks/melnikov-ky/lab_4/MainTask/Consumer_2.py
new file mode 100644
index 0000000..cc24bb1
--- /dev/null
+++ b/tasks/melnikov-ky/lab_4/MainTask/Consumer_2.py
@@ -0,0 +1,19 @@
+import pika
+
+
+def process_message(ch, method, properties, body):
+ print(f"Получено сообщение: {body}")
+ print("Сообщение успешно обработано")
+
+connection = pika.BlockingConnection(pika.ConnectionParameters('localhost'))
+channel = connection.channel()
+
+result = channel.queue_declare(queue='', exclusive=True)
+queue_name = result.method.queue
+
+channel.queue_bind(exchange='Agreements', queue=queue_name)
+
+channel.basic_consume(queue=queue_name, on_message_callback=process_message, auto_ack=True)
+
+print('Ожидание сообщений...')
+channel.start_consuming()
\ No newline at end of file
diff --git a/tasks/melnikov-ky/lab_4/MainTask/Publisher.py b/tasks/melnikov-ky/lab_4/MainTask/Publisher.py
new file mode 100644
index 0000000..83a6570
--- /dev/null
+++ b/tasks/melnikov-ky/lab_4/MainTask/Publisher.py
@@ -0,0 +1,19 @@
+import pika
+import time
+import random
+
+collection = ["Application for Travel Agency", "Buying tickets", "Execution of the agreement", "Check-into a hotel"]
+
+connection = pika.BlockingConnection(pika.ConnectionParameters('localhost'))
+channel = connection.channel()
+
+channel.exchange_declare(exchange='Agreements', exchange_type='fanout')
+
+while True:
+ message = f"Message: {random.choice(collection)}"
+
+ channel.basic_publish(exchange='Agreements', routing_key='', body=message)
+
+ time.sleep(1)
+
+connection.close()
\ No newline at end of file
diff --git a/tasks/melnikov-ky/lab_4/Python.gitignore b/tasks/melnikov-ky/lab_4/Python.gitignore
new file mode 100644
index 0000000..68bc17f
--- /dev/null
+++ b/tasks/melnikov-ky/lab_4/Python.gitignore
@@ -0,0 +1,160 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+# Usually these files are written by a python script from a template
+# before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+# For a library or package, you might want to ignore these files since the code is
+# intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+# According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+# However, in case of collaboration, if having platform-specific dependencies or dependencies
+# having no cross-platform support, pipenv may install dependencies that don't work, or not
+# install all needed dependencies.
+#Pipfile.lock
+
+# poetry
+# Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+# This is especially recommended for binary packages to ensure reproducibility, and is more
+# commonly ignored for libraries.
+# https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+# Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+# pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+# in version control.
+# https://pdm.fming.dev/#use-with-ide
+.pdm.toml
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+# JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+# be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+# and can be added to the global gitignore or merged into this file. For a more nuclear
+# option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/
diff --git a/tasks/melnikov-ky/lab_4/README.md b/tasks/melnikov-ky/lab_4/README.md
new file mode 100644
index 0000000..315dc15
--- /dev/null
+++ b/tasks/melnikov-ky/lab_4/README.md
@@ -0,0 +1,116 @@
+# Отчет по лабораторной работе №4
+
+Выполнил студент гр. ИСЭбд-41 Мельников К.Ю.
+
+## Прохождение tutorial
+
+Установил rabbitMQ server, erlang и зашел в брокер под гостем по http://localhost:15672/#/
+
+Туториал 1:
+
+
+
+
+Туториал 2:
+
+
+
+
+
+Туториал 3:
+
+
+
+
+
+## Разработка демонстрационных приложений
+
+Предметная область: Дополенительные соглашения и договора на заселение в отель Туристического агентства.
+Разработа три приложения согласно предметной области.
+
+1. Publisher
+
+```py
+import pika
+import time
+import random
+
+collection = ["Application for Travel Agency", "Buying tickets", "Execution of the agreement", "Check-into a hotel"]
+
+connection = pika.BlockingConnection(pika.ConnectionParameters('localhost'))
+channel = connection.channel()
+
+channel.exchange_declare(exchange='Agreements', exchange_type='fanout')
+
+while True:
+ message = f"Message: {random.choice(collection)}"
+
+ channel.basic_publish(exchange='Agreements', routing_key='', body=message)
+
+ time.sleep(1)
+
+connection.close()
+```
+
+2. Consumer 1.
+
+```py
+import pika
+import time
+
+def process_message(ch, method, properties, body):
+ print(f"Получено сообщение: {body}")
+ time.sleep(3)
+ print("Сообщение успешно обработано")
+
+connection = pika.BlockingConnection(pika.ConnectionParameters('localhost'))
+channel = connection.channel()
+
+result = channel.queue_declare(queue='', exclusive=True)
+queue_name = result.method.queue
+
+channel.queue_bind(exchange='Agreements', queue=queue_name)
+
+channel.basic_consume(queue=queue_name, on_message_callback=process_message, auto_ack=True)
+
+print('Ожидание сообщений...')
+channel.start_consuming()
+```
+
+3. Consumer 2.
+
+```py
+import pika
+
+
+def process_message(ch, method, properties, body):
+ print(f"Получено сообщение: {body}")
+ print("Сообщение успешно обработано")
+
+connection = pika.BlockingConnection(pika.ConnectionParameters('localhost'))
+channel = connection.channel()
+
+result = channel.queue_declare(queue='', exclusive=True)
+queue_name = result.method.queue
+
+channel.queue_bind(exchange='Agreements', queue=queue_name)
+
+channel.basic_consume(queue=queue_name, on_message_callback=process_message, auto_ack=True)
+
+print('Ожидание сообщений...')
+channel.start_consuming()
+```
+
+## Результаты выполнения лабораторной работы
+
+Результат отработки Consumer_1:
+
+
+
+Результат отработки Consumer_2:
+
+
+
+
+
+Вывод: Consumer_2 нагружает меньше памяти, чем Consumer_1 и принимает сообщения гораздо быстрее, тем самым не позволяя очереди накапливать огромное количество сообщений.
\ No newline at end of file
diff --git a/tasks/melnikov-ky/lab_4/Tut1/receive.py b/tasks/melnikov-ky/lab_4/Tut1/receive.py
new file mode 100644
index 0000000..7c887a6
--- /dev/null
+++ b/tasks/melnikov-ky/lab_4/Tut1/receive.py
@@ -0,0 +1,25 @@
+import pika, sys, os
+
+def main():
+ connection = pika.BlockingConnection(pika.ConnectionParameters(host='localhost'))
+ channel = connection.channel()
+
+ channel.queue_declare(queue='MelnikovLogs')
+
+ def callback(ch, method, properties, body):
+ print(f" [x] Получено сообщение: {body}")
+
+ channel.basic_consume(queue='MelnikovLogs', on_message_callback=callback, auto_ack=True)
+
+ print(' [*] Ожидание сообщений. Для завершения CTRL+C')
+ channel.start_consuming()
+
+if __name__ == '__main__':
+ try:
+ main()
+ except KeyboardInterrupt:
+ print('Произошла ошибка')
+ try:
+ sys.exit(0)
+ except SystemExit:
+ os._exit(0)
\ No newline at end of file
diff --git a/tasks/melnikov-ky/lab_4/Tut1/send.py b/tasks/melnikov-ky/lab_4/Tut1/send.py
new file mode 100644
index 0000000..aa94629
--- /dev/null
+++ b/tasks/melnikov-ky/lab_4/Tut1/send.py
@@ -0,0 +1,11 @@
+import pika
+
+connection = pika.BlockingConnection(pika.ConnectionParameters('localhost'))
+channel = connection.channel()
+
+channel.queue_declare(queue='melnikov')
+
+channel.basic_publish(exchange='',routing_key='melnikov',body='Hello, my name is Kirill, i am from ISEbd-41!')
+print(" [x] Отправлено сообщение")
+
+connection.close()
\ No newline at end of file
diff --git a/tasks/melnikov-ky/lab_4/Tut2/new_task.py b/tasks/melnikov-ky/lab_4/Tut2/new_task.py
new file mode 100644
index 0000000..47ce290
--- /dev/null
+++ b/tasks/melnikov-ky/lab_4/Tut2/new_task.py
@@ -0,0 +1,13 @@
+import pika
+import sys
+
+connection = pika.BlockingConnection(pika.ConnectionParameters(host='localhost'))
+channel = connection.channel()
+
+channel.queue_declare(queue='melnikov2', durable=True)
+
+message = ' '.join(sys.argv[1:]) or "Hello, my name is Kirill, i am from ISEbd-41!"
+channel.basic_publish(exchange='', routing_key='melnikov2', body=message, properties=pika.BasicProperties(
+ delivery_mode=pika.spec.PERSISTENT_DELIVERY_MODE))
+print(f" [x] Отправлено {message}")
+connection.close()
\ No newline at end of file
diff --git a/tasks/melnikov-ky/lab_4/Tut2/worker.py b/tasks/melnikov-ky/lab_4/Tut2/worker.py
new file mode 100644
index 0000000..3acedc6
--- /dev/null
+++ b/tasks/melnikov-ky/lab_4/Tut2/worker.py
@@ -0,0 +1,19 @@
+import pika
+import time
+
+connection = pika.BlockingConnection(pika.ConnectionParameters(host='localhost'))
+channel = connection.channel()
+
+channel.queue_declare(queue='melnikov2', durable=True)
+print(' [*] Ожидание сообщений.')
+
+def callback(ch, method, properties, body):
+ print(f" [x] Получено сообщение: {body.decode()}")
+ time.sleep(body.count(b'.'))
+ print(" [x] Выполнено")
+ ch.basic_ack(delivery_tag=method.delivery_tag)
+
+channel.basic_qos(prefetch_count=1)
+channel.basic_consume(queue='melnikov2', on_message_callback=callback)
+
+channel.start_consuming()
\ No newline at end of file
diff --git a/tasks/melnikov-ky/lab_4/Tut3/emit_log.py b/tasks/melnikov-ky/lab_4/Tut3/emit_log.py
new file mode 100644
index 0000000..d051be4
--- /dev/null
+++ b/tasks/melnikov-ky/lab_4/Tut3/emit_log.py
@@ -0,0 +1,12 @@
+import pika
+import sys
+
+connection = pika.BlockingConnection(pika.ConnectionParameters(host='localhost'))
+channel = connection.channel()
+
+channel.exchange_declare(exchange='MelnikovLogs', exchange_type='fanout')
+
+message = ' '.join(sys.argv[1:]) or "Info: Hello, my name is Kirill, i am from ISEbd-41!"
+channel.basic_publish(exchange='MelnikovLogs', routing_key='', body=message)
+print(f" [x] Отправлено сообщение: {message}")
+connection.close()
\ No newline at end of file
diff --git a/tasks/melnikov-ky/lab_4/Tut3/receive_logs.py b/tasks/melnikov-ky/lab_4/Tut3/receive_logs.py
new file mode 100644
index 0000000..32bca64
--- /dev/null
+++ b/tasks/melnikov-ky/lab_4/Tut3/receive_logs.py
@@ -0,0 +1,21 @@
+import pika
+
+connection = pika.BlockingConnection(pika.ConnectionParameters(host='localhost'))
+channel = connection.channel()
+
+channel.exchange_declare(exchange='MelnikovLogs', exchange_type='fanout')
+
+result = channel.queue_declare(queue='', exclusive=True)
+queue_name = result.method.queue
+
+channel.queue_bind(exchange='MelnikovLogs', queue=queue_name)
+
+print(' [*] Ожидание сообщений. Для завершения CTRL+C')
+
+def callback(ch, method, properties, body):
+ print(f" [x] {body}")
+
+channel.basic_consume(
+ queue=queue_name, on_message_callback=callback, auto_ack=True)
+
+channel.start_consuming()
\ No newline at end of file
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diff --git a/tasks/melnikov-ky/lab_4/scrins/newtask.png b/tasks/melnikov-ky/lab_4/scrins/newtask.png
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diff --git a/tasks/melnikov-ky/lab_4/scrins/receivelogs.png b/tasks/melnikov-ky/lab_4/scrins/receivelogs.png
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diff --git a/tasks/melnikov-ky/lab_4/scrins/tut3.png b/tasks/melnikov-ky/lab_4/scrins/tut3.png
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diff --git a/tasks/melnikov-ky/lab_4/scrins/worker.png b/tasks/melnikov-ky/lab_4/scrins/worker.png
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