commit

.gitignore

+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store
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.idea/.gitignore

+# Default ignored files
+/shelf/
+/workspace.xml

.idea/encodings.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding">
+    <file url="file://$PROJECT_DIR$/src/main/java" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/src/main/resources" charset="UTF-8" />
+  </component>
+</project>
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.idea/misc.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="MavenProjectsManager">
+    <option name="originalFiles">
+      <list>
+        <option value="$PROJECT_DIR$/pom.xml" />
+      </list>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="17" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>
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.idea/vcs.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
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pom.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>com.example</groupId>
+    <artifactId>mongodb-task</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>3.2.0</version>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-mongodb</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter</artifactId>
+        </dependency>
+    </dependencies>
+
+    <properties>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
+    </properties>
+</project>
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src/main/java/org/example/Main.java

+package org.example;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.data.mongodb.core.MongoTemplate;
+import java.util.ArrayList;
+import java.util.List;
+
+@SpringBootApplication
+public class Main implements CommandLineRunner {
+
+    @Autowired
+    private MongoTemplate mongoTemplate;
+
+    @Autowired
+    private UserRepository userRepository;
+
+    public static void main(String[] args) {
+        SpringApplication.run(Main.class, args);
+    }
+
+    @Override
+    public void run(String... args) {
+        int totalRecords = 1000000;
+        int batchSize = 50000;
+        List<User> users = new ArrayList<>();
+
+        System.out.println("--- Starting Write Operation ---");
+        long startWrite = System.currentTimeMillis();
+
+        for (int i = 1; i <= totalRecords; i++) {
+            users.add(new User("User_" + i, "user" + i + "@hiait.sy"));
+
+            if (i % batchSize == 0) {
+                mongoTemplate.insertAll(users);
+                users.clear();
+                System.out.println("Inserted: " + i + " records");
+            }
+        }
+        long endWrite = System.currentTimeMillis();
+
+        System.out.println("--- Starting Read Operation ---");
+        long startRead = System.currentTimeMillis();
+        long count = userRepository.count();
+        long endRead = System.currentTimeMillis();
+
+        System.out.println("====================================");
+        System.out.println("Total Write Time: " + (endWrite - startWrite) / 1000.0 + " s");
+        System.out.println("Total Read Time: " + (endRead - startRead) / 1000.0 + " s");
+        System.out.println("Total Documents: " + count);
+        System.out.println("====================================");
+    }
+}
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src/main/java/org/example/User.java

+package org.example;
+
+import org.springframework.data.annotation.Id;
+import org.springframework.data.mongodb.core.mapping.Document;
+
+@Document(collection = "users")
+public class User {
+    @Id
+    private String id;
+    private String name;
+    private String email;
+
+    public User(String name, String email) {
+        this.name = name;
+        this.email = email;
+    }
+
+    // Getters and Setters are important for Spring Data
+    public String getId() { return id; }
+    public String getName() { return name; }
+    public String getEmail() { return email; }
+}
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src/main/java/org/example/UserRepository.java

+package org.example;
+
+import org.springframework.data.mongodb.repository.MongoRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface UserRepository extends MongoRepository<User, String> {
+}
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src/main/resources/application.properties

+# MongoDB Connection String
+spring.data.mongodb.uri=mongodb://192.168.144.132:27017/UniversityDB
+
+# Optional: To see the MongoDB queries in the logs
+logging.level.org.springframework.data.mongodb.core.MongoTemplate=DEBUG
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