diff --git a/distributed-computing.sln b/distributed-computing.sln
new file mode 100644
index 0000000..b1a0067
--- /dev/null
+++ b/distributed-computing.sln
@@ -0,0 +1,43 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.5.002.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "tasks", "tasks", "{2B6E26D7-A7B8-4D54-BBF4-015BA705E56A}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "moiseev-vv", "moiseev-vv", "{965B8A87-9BDC-4BCD-AFDB-3E44E4A74787}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "lab_2", "lab_2", "{9A3A59F9-8935-453F-A787-C01D0050EEC3}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "worker-1", "tasks\moiseev-vv\lab_2\worker-1\worker-1.csproj", "{BEA0DAB8-B17C-45E3-9381-6B9AC6501137}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "worker-2", "tasks\moiseev-vv\lab_2\worker-2\worker-2.csproj", "{31367C2B-C332-48BF-A72F-B9C382EAF53B}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{BEA0DAB8-B17C-45E3-9381-6B9AC6501137}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{BEA0DAB8-B17C-45E3-9381-6B9AC6501137}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{BEA0DAB8-B17C-45E3-9381-6B9AC6501137}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{BEA0DAB8-B17C-45E3-9381-6B9AC6501137}.Release|Any CPU.Build.0 = Release|Any CPU
+		{31367C2B-C332-48BF-A72F-B9C382EAF53B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{31367C2B-C332-48BF-A72F-B9C382EAF53B}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{31367C2B-C332-48BF-A72F-B9C382EAF53B}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{31367C2B-C332-48BF-A72F-B9C382EAF53B}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(NestedProjects) = preSolution
+		{965B8A87-9BDC-4BCD-AFDB-3E44E4A74787} = {2B6E26D7-A7B8-4D54-BBF4-015BA705E56A}
+		{9A3A59F9-8935-453F-A787-C01D0050EEC3} = {965B8A87-9BDC-4BCD-AFDB-3E44E4A74787}
+		{BEA0DAB8-B17C-45E3-9381-6B9AC6501137} = {9A3A59F9-8935-453F-A787-C01D0050EEC3}
+		{31367C2B-C332-48BF-A72F-B9C382EAF53B} = {9A3A59F9-8935-453F-A787-C01D0050EEC3}
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {158B89FF-64DF-43B9-8F23-E937532CE338}
+	EndGlobalSection
+EndGlobal
diff --git a/tasks/dunaev-oi/MainTask/Consumer_1.py b/tasks/dunaev-oi/MainTask/Consumer_1.py
new file mode 100644
index 0000000..ba5e8c8
--- /dev/null
+++ b/tasks/dunaev-oi/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/dunaev-oi/MainTask/Consumer_2.py b/tasks/dunaev-oi/MainTask/Consumer_2.py
new file mode 100644
index 0000000..cc24bb1
--- /dev/null
+++ b/tasks/dunaev-oi/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/dunaev-oi/MainTask/Publisher.py b/tasks/dunaev-oi/MainTask/Publisher.py
new file mode 100644
index 0000000..83a6570
--- /dev/null
+++ b/tasks/dunaev-oi/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/dunaev-oi/Python.gitignore b/tasks/dunaev-oi/Python.gitignore
new file mode 100644
index 0000000..68bc17f
--- /dev/null
+++ b/tasks/dunaev-oi/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/dunaev-oi/README.md b/tasks/dunaev-oi/README.md
new file mode 100644
index 0000000..63d3844
--- /dev/null
+++ b/tasks/dunaev-oi/README.md
@@ -0,0 +1,116 @@
+# Отчет по лабораторной работе №4
+
+Выполнил студент гр. ИСЭбд-41 Дунаев О.И.
+
+## Прохождение tutorial
+
+Установил rabbitMQ server, erlang и зашел в брокер под гостем по http://localhost:15672/#/ 
+
+Туториал 1:
+
+![](scrins/tut1.png)
+![](scrins/send.png)
+![](scrins/receive.png)
+Туториал 2:
+
+![](scrins/tut2.png)
+![](scrins/newtask.png)
+![](scrins/worker.png)
+
+Туториал 3:
+
+![](scrins/tut3.png)
+![](scrins/emitlog.png)
+![](scrins/receivelogs.png)
+
+## 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:
+
+![](scrins/maintask1.png)
+
+Результат отработки Consumer_2:
+
+![](scrins/maintask2.png)
+
+![](scrins/maintask_dop.png)
+
+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/dunaev-oi/Tut1/receive.py b/tasks/dunaev-oi/Tut1/receive.py
new file mode 100644
index 0000000..a827903
--- /dev/null
+++ b/tasks/dunaev-oi/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='DunaevLogs')
+
+    def callback(ch, method, properties, body):
+        print(f" [x] Получено сообщение: {body}")
+
+    channel.basic_consume(queue='DunaevLogs', 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/dunaev-oi/Tut1/send.py b/tasks/dunaev-oi/Tut1/send.py
new file mode 100644
index 0000000..213815d
--- /dev/null
+++ b/tasks/dunaev-oi/Tut1/send.py
@@ -0,0 +1,11 @@
+import pika
+
+connection = pika.BlockingConnection(pika.ConnectionParameters('localhost'))
+channel = connection.channel()
+
+channel.queue_declare(queue='dunaev')
+
+channel.basic_publish(exchange='',routing_key='dunaev',body='Hello, my name is Oleg, i am from ISEbd-41!')
+print(" [x] Отправлено сообщение")
+
+connection.close()
\ No newline at end of file
diff --git a/tasks/dunaev-oi/Tut2/new_task.py b/tasks/dunaev-oi/Tut2/new_task.py
new file mode 100644
index 0000000..5666bf6
--- /dev/null
+++ b/tasks/dunaev-oi/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='dunaev2', durable=True)
+
+message = ' '.join(sys.argv[1:]) or "Hello, my name is Oleg, i am from ISEbd-41!"
+channel.basic_publish(exchange='', routing_key='dunaev2', 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/dunaev-oi/Tut2/worker.py b/tasks/dunaev-oi/Tut2/worker.py
new file mode 100644
index 0000000..a07d16b
--- /dev/null
+++ b/tasks/dunaev-oi/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='dunaev2', 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='dunaev2', on_message_callback=callback)
+
+channel.start_consuming()
\ No newline at end of file
diff --git a/tasks/dunaev-oi/Tut3/emit_log.py b/tasks/dunaev-oi/Tut3/emit_log.py
new file mode 100644
index 0000000..44be490
--- /dev/null
+++ b/tasks/dunaev-oi/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='DunaevLogs', exchange_type='fanout')
+
+message = ' '.join(sys.argv[1:]) or "Info: Hello, my name is Oleg, i am from ISEbd-41!"
+channel.basic_publish(exchange='DunaevLogs', routing_key='', body=message)
+print(f" [x] Отправлено сообщение: {message}")
+connection.close()
\ No newline at end of file
diff --git a/tasks/dunaev-oi/Tut3/receive_logs.py b/tasks/dunaev-oi/Tut3/receive_logs.py
new file mode 100644
index 0000000..d884058
--- /dev/null
+++ b/tasks/dunaev-oi/Tut3/receive_logs.py
@@ -0,0 +1,21 @@
+import pika
+
+connection = pika.BlockingConnection(pika.ConnectionParameters(host='localhost'))
+channel = connection.channel()
+
+channel.exchange_declare(exchange='DunaevLogs', exchange_type='fanout')
+
+result = channel.queue_declare(queue='', exclusive=True)
+queue_name = result.method.queue
+
+channel.queue_bind(exchange='DunaevLogs', 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
diff --git a/tasks/dunaev-oi/scrins/emitlog.png b/tasks/dunaev-oi/scrins/emitlog.png
new file mode 100644
index 0000000..3cbbe67
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diff --git a/tasks/dunaev-oi/scrins/maintask1.png b/tasks/dunaev-oi/scrins/maintask1.png
new file mode 100644
index 0000000..582d0fc
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diff --git a/tasks/dunaev-oi/scrins/maintask2.png b/tasks/dunaev-oi/scrins/maintask2.png
new file mode 100644
index 0000000..5f3409e
Binary files /dev/null and b/tasks/dunaev-oi/scrins/maintask2.png differ
diff --git a/tasks/dunaev-oi/scrins/maintask_dop.png b/tasks/dunaev-oi/scrins/maintask_dop.png
new file mode 100644
index 0000000..d393697
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diff --git a/tasks/dunaev-oi/scrins/newtask.png b/tasks/dunaev-oi/scrins/newtask.png
new file mode 100644
index 0000000..90d6c62
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diff --git a/tasks/dunaev-oi/scrins/receive.png b/tasks/dunaev-oi/scrins/receive.png
new file mode 100644
index 0000000..7fd1be9
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diff --git a/tasks/dunaev-oi/scrins/receivelogs.png b/tasks/dunaev-oi/scrins/receivelogs.png
new file mode 100644
index 0000000..9f573a8
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diff --git a/tasks/dunaev-oi/scrins/send.png b/tasks/dunaev-oi/scrins/send.png
new file mode 100644
index 0000000..1f40933
Binary files /dev/null and b/tasks/dunaev-oi/scrins/send.png differ
diff --git a/tasks/dunaev-oi/scrins/tut1.png b/tasks/dunaev-oi/scrins/tut1.png
new file mode 100644
index 0000000..fd9973c
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diff --git a/tasks/dunaev-oi/scrins/tut2.png b/tasks/dunaev-oi/scrins/tut2.png
new file mode 100644
index 0000000..73a7c73
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diff --git a/tasks/dunaev-oi/scrins/tut3.png b/tasks/dunaev-oi/scrins/tut3.png
new file mode 100644
index 0000000..ce85894
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diff --git a/tasks/dunaev-oi/scrins/worker.png b/tasks/dunaev-oi/scrins/worker.png
new file mode 100644
index 0000000..f629ab5
Binary files /dev/null and b/tasks/dunaev-oi/scrins/worker.png differ