diff --git a/w11/Command.java b/w11/Command.java
new file mode 100644
index 0000000..52f0e15
--- /dev/null
+++ b/w11/Command.java
@@ -0,0 +1,9 @@
+package com.example.datacollect.command;
+
+import com.example.datacollect.model.Article;
+import java.util.List;
+
+public interface Command {
+    String getName();
+    void execute(String[] args, List<Article> articles);
+}
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diff --git a/w11/CrawlCommand.java b/w11/CrawlCommand.java
new file mode 100644
index 0000000..9debb15
--- /dev/null
+++ b/w11/CrawlCommand.java
@@ -0,0 +1,81 @@
+package com.example.datacollect.command;
+
+import com.example.datacollect.exception.CrawlerException;
+import com.example.datacollect.model.Article;
+import com.example.datacollect.repository.ArticleRepository;
+import com.example.datacollect.service.ScraperService;
+import com.example.datacollect.strategy.ArticleCrawlStrategy;
+import com.example.datacollect.view.ConsoleView;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import java.util.List;
+
+public class CrawlCommand implements Command {
+    private static final Logger logger = LoggerFactory.getLogger(CrawlCommand.class);
+    private final ConsoleView view;
+    private final ArticleRepository repository;
+    private final ScraperService scraperService;
+    private static final int MAX_RETRIES = 3;
+    private static final long RETRY_DELAY_MS = 1000;
+
+    public CrawlCommand(ConsoleView view, ArticleRepository repository) {
+        this.view = view;
+        this.repository = repository;
+        this.scraperService = new ScraperService(new ArticleCrawlStrategy(), MAX_RETRIES, RETRY_DELAY_MS);
+    }
+
+    @Override
+    public String getName() {
+        return "crawl";
+    }
+
+    @Override
+    public void execute(String[] args, List<Article> articles) {
+        if (args.length < 2) {
+            view.printError("Usage: crawl <url>");
+            return;
+        }
+
+        String url = args[1];
+        logger.info("Starting crawl for URL: {}", url);
+        view.printInfo("Starting to crawl: " + url);
+
+        int attempts = 0;
+        boolean success = false;
+        CrawlerException lastException = null;
+
+        while (attempts < MAX_RETRIES && !success) {
+            attempts++;
+            try {
+                Article article = scraperService.scrape(url);
+                repository.save(article);
+                articles.add(article);
+                logger.info("Successfully crawled article: {}", article.getTitle());
+                view.printSuccess("Successfully crawled: " + article.getTitle());
+                success = true;
+            } catch (CrawlerException e) {
+                lastException = e;
+                logger.warn("Attempt {}/{} failed for URL: {}", attempts, MAX_RETRIES, url);
+                view.printError("Attempt " + attempts + " failed: " + e.getMessage());
+                if (attempts < MAX_RETRIES) {
+                    try {
+                        Thread.sleep(RETRY_DELAY_MS);
+                    } catch (InterruptedException ie) {
+                        Thread.currentThread().interrupt();
+                        logger.error("Crawl interrupted for URL: {}", url);
+                        view.printError("Crawl interrupted");
+                        return;
+                    }
+                }
+            }
+        }
+
+        if (!success) {
+            logger.error("Failed to crawl URL after {} attempts: {}", MAX_RETRIES, url);
+            view.printError("Failed to crawl after " + MAX_RETRIES + " attempts");
+            if (lastException != null) {
+                view.printError("Last error: " + lastException.getMessage());
+            }
+        }
+    }
+}
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diff --git a/w11/ExitCommand.java b/w11/ExitCommand.java
new file mode 100644
index 0000000..2a3c5bf
--- /dev/null
+++ b/w11/ExitCommand.java
@@ -0,0 +1,24 @@
+package com.example.datacollect.command;
+
+import com.example.datacollect.model.Article;
+import com.example.datacollect.view.ConsoleView;
+import java.util.List;
+
+public class ExitCommand implements Command {
+    private final ConsoleView view;
+
+    public ExitCommand(ConsoleView view) {
+        this.view = view;
+    }
+
+    @Override
+    public String getName() {
+        return "exit";
+    }
+
+    @Override
+    public void execute(String[] args, List<Article> articles) {
+        view.printSuccess("Bye!");
+        System.exit(0);
+    }
+}
\ No newline at end of file
diff --git a/w11/HelpCommand.java b/w11/HelpCommand.java
new file mode 100644
index 0000000..a148106
--- /dev/null
+++ b/w11/HelpCommand.java
@@ -0,0 +1,23 @@
+package com.example.datacollect.command;
+
+import com.example.datacollect.model.Article;
+import com.example.datacollect.view.ConsoleView;
+import java.util.List;
+
+public class HelpCommand implements Command {
+    private final ConsoleView view;
+
+    public HelpCommand(ConsoleView view) {
+        this.view = view;
+    }
+
+    @Override
+    public String getName() {
+        return "help";
+    }
+
+    @Override
+    public void execute(String[] args, List<Article> articles) {
+        view.printInfo("Commands: crawl <url>, list, help, exit");
+    }
+}
\ No newline at end of file
diff --git a/w11/Main.java b/w11/Main.java
new file mode 100644
index 0000000..691627b
--- /dev/null
+++ b/w11/Main.java
@@ -0,0 +1,23 @@
+package com.example.datacollect;
+
+import com.example.datacollect.controller.CrawlerController;
+import com.example.datacollect.model.Article;
+import com.example.datacollect.repository.ArticleRepository;
+import com.example.datacollect.view.ConsoleView;
+import java.util.ArrayList;
+import java.util.List;
+
+public class Main {
+
+    public static void main(String[] args) {
+        ConsoleView view = new ConsoleView();
+        List<Article> articles = new ArrayList<>();
+        ArticleRepository repository = new ArticleRepository();
+        CrawlerController controller = new CrawlerController(view, articles, repository);
+
+        view.printSuccess("Welcome to CLI Crawler (w11)! Type help for commands.");
+        while (true) {
+            controller.handle(view.readLine());
+        }
+    }
+}
\ No newline at end of file
diff --git a/w11/logback.xml b/w11/logback.xml
new file mode 100644
index 0000000..1acbddf
--- /dev/null
+++ b/w11/logback.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
+        </encoder>
+    </appender>
+
+    <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
+        <file>logs/application.log</file>
+        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
+            <fileNamePattern>logs/application-%d{yyyy-MM-dd}.log</fileNamePattern>
+            <maxHistory>30</maxHistory>
+        </rollingPolicy>
+        <encoder>
+            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
+        </encoder>
+    </appender>
+
+    <logger name="com.example.datacollect" level="DEBUG"/>
+
+    <root level="INFO">
+        <appender-ref ref="CONSOLE"/>
+        <appender-ref ref="FILE"/>
+    </root>
+</configuration>
\ No newline at end of file