diff --git a/martysheva_tamara_lab_4/README.md b/martysheva_tamara_lab_4/README.md
new file mode 100644
index 0000000..4e4c68c
--- /dev/null
+++ b/martysheva_tamara_lab_4/README.md
@@ -0,0 +1,45 @@
+# Лабораторная работа №4 - Работа с брокером сообщений
+**Цель**: изучение проектирования приложений при помощи брокера сообщений.
+
+**Задачи**:
+* Установить брокер сообщений RabbitMQ.
+* Пройти уроки 1, 2 и 3 из RabbitMQ Tutorials на любом языке программирования.
+* Продемонстрировать работу брокера сообщений.
+***
+## *Ход работы:*
+### RabbitMQ:
+В DockerHub ищем и пуллим образ RabbitMQ, далее запускаем его:
+
+![](images/pulling.jpg "")
+
+Указываем имя для контейнера и проброс необходимых портов:
+
+![](images/run.jpg "")
+
+### Работа брокера
+#### Publisher
+Программа, которая создаёт один exchange с типом fanout. Программа должна раз в секунду генерировать сообщения в журнал событий согласно вашей предметной области. Например, событие "пришёл заказ" или "сообщение от пользователя" или "необходимо создать отчёт".
+
+Отправляет пользователям сообщения о том, что необходимо начать тренировку:
+
+![](images/publisher.jpg "")
+
+#### Consumer1 - с обработкой
+
+Consumer 1. Программа, которая создаёт под себя отдельную не анонимную (!) очередь (queue) (то есть имя queue НЕ пустая строка), создаёт binding на exchange и начинает принимать сообщения (consume). Программа должна обрабатывать сообщения 2-3 секунды.
+
+![](images/consumer1.jpg "")
+
+#### Consumer2 - без обработки
+
+Consumer 2. Аналогично Consumer 1, только сообщения необходимо обрабатывать моментально. Только имя очереди должно отличаться от Consumer 1.
+
+![](images/consumer2.jpg "")
+
+### Отчеты
+
+![](images/overview.jpg "")
+
+![](images/queue1.jpg "")
+
+![](images/queue2.jpg "")
diff --git a/martysheva_tamara_lab_4/client/.gitignore b/martysheva_tamara_lab_4/client/.gitignore
new file mode 100644
index 0000000..c2065bc
--- /dev/null
+++ b/martysheva_tamara_lab_4/client/.gitignore
@@ -0,0 +1,37 @@
+HELP.md
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
diff --git a/martysheva_tamara_lab_4/client/build.gradle b/martysheva_tamara_lab_4/client/build.gradle
new file mode 100644
index 0000000..388e34e
--- /dev/null
+++ b/martysheva_tamara_lab_4/client/build.gradle
@@ -0,0 +1,18 @@
+plugins {
+	id 'org.springframework.boot' version '2.6.3'
+	id 'io.spring.dependency-management' version '1.0.11.RELEASE'
+	id 'java'
+}
+
+group = 'myapp'
+version = '0.0.1-SNAPSHOT'
+sourceCompatibility = '17'
+
+repositories {
+	mavenCentral()
+}
+
+dependencies {
+	implementation 'com.rabbitmq:amqp-client:5.16.0'
+}
+
diff --git a/martysheva_tamara_lab_4/client/gradle/wrapper/gradle-wrapper.jar b/martysheva_tamara_lab_4/client/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..41d9927
Binary files /dev/null and b/martysheva_tamara_lab_4/client/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/martysheva_tamara_lab_4/client/gradle/wrapper/gradle-wrapper.properties b/martysheva_tamara_lab_4/client/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..41dfb87
--- /dev/null
+++ b/martysheva_tamara_lab_4/client/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.4-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/martysheva_tamara_lab_4/client/gradlew b/martysheva_tamara_lab_4/client/gradlew
new file mode 100644
index 0000000..1b6c787
--- /dev/null
+++ b/martysheva_tamara_lab_4/client/gradlew
@@ -0,0 +1,234 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+APP_NAME="Gradle"
+APP_BASE_NAME=${0##*/}
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"
diff --git a/martysheva_tamara_lab_4/client/gradlew.bat b/martysheva_tamara_lab_4/client/gradlew.bat
new file mode 100644
index 0000000..107acd3
--- /dev/null
+++ b/martysheva_tamara_lab_4/client/gradlew.bat
@@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/martysheva_tamara_lab_4/client/settings.gradle b/martysheva_tamara_lab_4/client/settings.gradle
new file mode 100644
index 0000000..81d0f44
--- /dev/null
+++ b/martysheva_tamara_lab_4/client/settings.gradle
@@ -0,0 +1 @@
+rootProject.name = 'labIP'
diff --git a/martysheva_tamara_lab_4/client/src/main/java/myapp/Consumer1.java b/martysheva_tamara_lab_4/client/src/main/java/myapp/Consumer1.java
new file mode 100644
index 0000000..26b4f27
--- /dev/null
+++ b/martysheva_tamara_lab_4/client/src/main/java/myapp/Consumer1.java
@@ -0,0 +1,49 @@
+package myapp;
+
+import com.rabbitmq.client.Channel;
+import com.rabbitmq.client.Connection;
+import com.rabbitmq.client.ConnectionFactory;
+import com.rabbitmq.client.DeliverCallback;
+
+import java.nio.charset.StandardCharsets;
+import java.time.LocalTime;
+import java.time.format.DateTimeFormatter;
+
+public class Consumer1 {
+    private static final String EXCHANGE_NAME = "messages";
+    private static final String QUEUE_NAME = "queue1";
+
+    public static void main(String[] argv) {
+        try {
+            ConnectionFactory factory = new ConnectionFactory();
+            factory.setHost("localhost");
+            factory.setPort(5672);
+            factory.setUsername("guest");
+            factory.setPassword("guest");
+
+            Connection connection = factory.newConnection();
+            Channel channel = connection.createChannel();
+
+            channel.queueDeclare(QUEUE_NAME, false, false, false, null);
+            channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "");
+            System.out.println(LocalTime.now().format(DateTimeFormatter.ofPattern("HH:mm:ss")) + " Consumer1 : waiting for messages . . .");
+
+            DeliverCallback deliverCallback = (consumerTag, delivery) -> {
+                String message = new String(delivery.getBody(), StandardCharsets.UTF_8);
+                try {
+                    System.out.println(LocalTime.now().format(DateTimeFormatter.ofPattern("HH:mm:ss")) + " Consumer1 : processing an incoming message . . .");
+                    Thread.sleep(3000);
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
+                System.out.println(LocalTime.now().format(DateTimeFormatter.ofPattern("HH:mm:ss")) + " Consumer1 : message received - " + message);
+            };
+
+            channel.basicConsume(QUEUE_NAME, true, deliverCallback, consumerTag -> {});
+
+            Thread.sleep(90000);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+}
\ No newline at end of file
diff --git a/martysheva_tamara_lab_4/client/src/main/java/myapp/Consumer2.java b/martysheva_tamara_lab_4/client/src/main/java/myapp/Consumer2.java
new file mode 100644
index 0000000..dbe4dc3
--- /dev/null
+++ b/martysheva_tamara_lab_4/client/src/main/java/myapp/Consumer2.java
@@ -0,0 +1,43 @@
+package myapp;
+
+import com.rabbitmq.client.Channel;
+import com.rabbitmq.client.Connection;
+import com.rabbitmq.client.ConnectionFactory;
+import com.rabbitmq.client.DeliverCallback;
+
+import java.nio.charset.StandardCharsets;
+import java.time.LocalTime;
+import java.time.format.DateTimeFormatter;
+
+public class Consumer2 {
+    private static final String EXCHANGE_NAME = "messages";
+    private static final String QUEUE_NAME = "queue2";
+
+    public static void main(String[] argv) {
+        try {
+            ConnectionFactory factory = new ConnectionFactory();
+            factory.setHost("localhost");
+            factory.setPort(5672);
+            factory.setUsername("guest");
+            factory.setPassword("guest");
+
+            Connection connection = factory.newConnection();
+            Channel channel = connection.createChannel();
+
+            channel.queueDeclare(QUEUE_NAME, false, false, false, null);
+            channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "");
+            System.out.println(LocalTime.now().format(DateTimeFormatter.ofPattern("HH:mm:ss")) + " Consumer2 : waiting for messages . . .");
+
+            DeliverCallback deliverCallback = (consumerTag, delivery) -> {
+                String message = new String(delivery.getBody());
+                System.out.println(LocalTime.now().format(DateTimeFormatter.ofPattern("HH:mm:ss")) + " Consumer2 : message received - " + message);
+            };
+
+            channel.basicConsume(QUEUE_NAME, true, deliverCallback, consumerTag -> {});
+
+            Thread.sleep(90000);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+}
\ No newline at end of file
diff --git a/martysheva_tamara_lab_4/client/src/main/java/myapp/Publisher.java b/martysheva_tamara_lab_4/client/src/main/java/myapp/Publisher.java
new file mode 100644
index 0000000..6a69889
--- /dev/null
+++ b/martysheva_tamara_lab_4/client/src/main/java/myapp/Publisher.java
@@ -0,0 +1,36 @@
+package myapp;
+
+import com.rabbitmq.client.Channel;
+import com.rabbitmq.client.Connection;
+import com.rabbitmq.client.ConnectionFactory;
+
+import java.time.LocalTime;
+import java.time.format.DateTimeFormatter;
+
+public class Publisher {
+
+    private static final String EXCHANGE_NAME = "messages";
+
+    public static void main(String[] args) {
+        try {
+            ConnectionFactory factory = new ConnectionFactory();
+            factory.setHost("localhost");
+            factory.setPort(5672);
+            factory.setUsername("guest");
+            factory.setPassword("guest");
+
+            Connection connection = factory.newConnection();
+            Channel channel = connection.createChannel();
+            channel.exchangeDeclare(EXCHANGE_NAME, "fanout");
+
+            while (true) {
+                String message = "It's time to start training!";
+                channel.basicPublish(EXCHANGE_NAME, "", null, message.getBytes());
+                System.out.println(LocalTime.now().format(DateTimeFormatter.ofPattern("HH:mm:ss")) + " Message sent: " + message);
+                Thread.sleep(1000);
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+}
\ No newline at end of file
diff --git a/martysheva_tamara_lab_4/client/src/main/resources/application.properties b/martysheva_tamara_lab_4/client/src/main/resources/application.properties
new file mode 100644
index 0000000..e69de29
diff --git a/martysheva_tamara_lab_4/images/consumer1.jpg b/martysheva_tamara_lab_4/images/consumer1.jpg
new file mode 100644
index 0000000..16ff167
Binary files /dev/null and b/martysheva_tamara_lab_4/images/consumer1.jpg differ
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