diff --git a/src/main/java/com/scaler/lld/design/assignments/builder/DatabaseConfigurationBuilder.java b/src/main/java/com/scaler/lld/design/assignments/builder/DatabaseConfigurationBuilder.java
index 592aa32..0043df1 100644
--- a/src/main/java/com/scaler/lld/design/assignments/builder/DatabaseConfigurationBuilder.java
+++ b/src/main/java/com/scaler/lld/design/assignments/builder/DatabaseConfigurationBuilder.java
@@ -1,6 +1,86 @@
 package com.scaler.lld.design.assignments.builder;
 
+import lombok.Setter;
+
 @WithBuilder
 public class DatabaseConfigurationBuilder {
 
+    private String databaseUrl;
+    private String username;
+    private String password;
+    private int maxConnections;
+    private boolean enableCache;
+    private boolean isReadOnly;
+
+//    public DatabaseConfiguration(String databaseUrl, String username, String password, int maxConnections, boolean enableCache, boolean isReadOnly) {
+//        this.databaseUrl = databaseUrl;
+//        this.username = username;
+//        this.password = password;
+//        this.maxConnections = maxConnections;
+//        this.enableCache = enableCache;
+//        this.isReadOnly = isReadOnly;
+//    }
+
+    private DatabaseConfigurationBuilder(){
+
+    }
+
+    public static Builder builder(){
+        return new Builder();
+    }
+
+    public static class Builder{
+         private DatabaseConfigurationBuilder builder;
+
+         Builder(){
+             builder=new DatabaseConfigurationBuilder();
+         }
+
+
+
+       public DatabaseConfigurationBuilder build(){
+           DatabaseConfigurationBuilder database=new DatabaseConfigurationBuilder();
+           database.databaseUrl=builder.databaseUrl;
+           database.username=builder.username;
+           database.password=builder.password;
+           database.maxConnections=builder.maxConnections;
+           database.enableCache=builder.enableCache;
+           database.isReadOnly=builder.isReadOnly;
+           builder=new DatabaseConfigurationBuilder();
+           return database;
+       }
+
+
+        public Builder setDatabaseUrl(String databaseUrl) {
+            builder.databaseUrl=databaseUrl;
+            return this;
+        }
+
+        public Builder setUsername(String username) {
+            builder.username=username;
+            return this;
+        }
+
+        public Builder setPassword(String password) {
+            builder.password=password;
+            return this;
+        }
+
+        public Builder getMaxConnections(int maxConnections) {
+            builder.maxConnections=maxConnections;
+            return this;
+        }
+
+        public Builder isEnableCache(boolean enableCache) {
+            builder.enableCache=enableCache;
+            return this;
+        }
+
+        public Builder isReadOnly(boolean isReadOnly) {
+            builder.isReadOnly=isReadOnly;
+            return this;
+        }
+
+
+    }
 }
\ No newline at end of file
diff --git a/src/main/java/com/scaler/lld/design/assignments/prototype/Configuration.java b/src/main/java/com/scaler/lld/design/assignments/prototype/Configuration.java
index 597f36e..307d92b 100644
--- a/src/main/java/com/scaler/lld/design/assignments/prototype/Configuration.java
+++ b/src/main/java/com/scaler/lld/design/assignments/prototype/Configuration.java
@@ -1,6 +1,6 @@
 package com.scaler.lld.design.assignments.prototype;
 
-public class Configuration {
+public class Configuration implements ClonableObject {
     private String themeColor;
     private Boolean autoSave;
     private String language;
@@ -19,6 +19,10 @@ public Configuration(String themeColor, Boolean autoSave, String language, Boole
         this.type = type;
     }
 
+    public Configuration() {
+
+    }
+
     public String getThemeColor() {
         return themeColor;
     }
@@ -46,4 +50,17 @@ public String getFontFamily() {
     public ConfigurationType getType() {
         return type;
     }
+
+    @Override
+    public Configuration cloneObject() {
+        Configuration clone=new Configuration();
+        clone.themeColor=this.themeColor;
+        clone.autoSave=this.autoSave;
+        clone.language=this.language;
+        clone.darkMode=this.darkMode;
+        clone.fontSize=this.fontSize;
+        clone.fontFamily=this.fontFamily;
+        clone.type=this.type;
+        return clone;
+    }
 }
\ No newline at end of file
diff --git a/src/main/java/com/scaler/lld/design/assignments/prototype/ConfigurationPrototypeRegistryImpl.java b/src/main/java/com/scaler/lld/design/assignments/prototype/ConfigurationPrototypeRegistryImpl.java
new file mode 100644
index 0000000..f74f991
--- /dev/null
+++ b/src/main/java/com/scaler/lld/design/assignments/prototype/ConfigurationPrototypeRegistryImpl.java
@@ -0,0 +1,21 @@
+package com.scaler.lld.design.assignments.prototype;
+
+import java.util.HashMap;
+
+public class ConfigurationPrototypeRegistryImpl implements ConfigurationPrototypeRegistry{
+    HashMap<ConfigurationType,Configuration> registry=new HashMap<>();
+    @Override
+    public void addPrototype(Configuration user) {
+      registry.put(user.getType(),user);
+    }
+
+    @Override
+    public Configuration getPrototype(ConfigurationType type) {
+        return registry.get(type);
+    }
+
+    @Override
+    public Configuration clone(ConfigurationType type) {
+        return registry.get(type).cloneObject();
+    }
+}
diff --git a/src/main/java/com/scaler/lld/design/assignments/singleton/FileBasedConfigurationManagerImpl.java b/src/main/java/com/scaler/lld/design/assignments/singleton/FileBasedConfigurationManagerImpl.java
index 15470fc..64d5b8c 100644
--- a/src/main/java/com/scaler/lld/design/assignments/singleton/FileBasedConfigurationManagerImpl.java
+++ b/src/main/java/com/scaler/lld/design/assignments/singleton/FileBasedConfigurationManagerImpl.java
@@ -2,49 +2,60 @@
 
 public class FileBasedConfigurationManagerImpl extends FileBasedConfigurationManager {
 
+    private static FileBasedConfigurationManagerImpl fileBasedConfigurationManager=null;
+
+
+    private FileBasedConfigurationManagerImpl(){
+
+    }
     @Override
     public String getConfiguration(String key) {
-        // TODO Auto-generated method stub
-        throw new UnsupportedOperationException("Unimplemented method 'getConfiguration'");
+        return properties.getProperty(key);
     }
 
     @Override
     public <T> T getConfiguration(String key, Class<T> type) {
-        // TODO Auto-generated method stub
-        throw new UnsupportedOperationException("Unimplemented method 'getConfiguration'");
+
+        return properties.getProperty(key)!=null?convert(properties.getProperty(key),type):null;
     }
 
     @Override
     public void setConfiguration(String key, String value) {
-        // TODO Auto-generated method stub
-        throw new UnsupportedOperationException("Unimplemented method 'setConfiguration'");
+        properties.setProperty(key, value);
     }
 
     @Override
     public <T> void setConfiguration(String key, T value) {
-        // TODO Auto-generated method stub
-        throw new UnsupportedOperationException("Unimplemented method 'setConfiguration'");
+        properties.setProperty(key, value.toString());
+
     }
 
     @Override
     public void removeConfiguration(String key) {
-        // TODO Auto-generated method stub
-        throw new UnsupportedOperationException("Unimplemented method 'removeConfiguration'");
+        properties.remove(key);
     }
 
     @Override
     public void clear() {
-        // TODO Auto-generated method stub
-        throw new UnsupportedOperationException("Unimplemented method 'clear'");
+        properties.clear();
     }
 
     public static FileBasedConfigurationManager getInstance() {
-        // TODO Auto-generated method stub
-        return null;
+
+        if(fileBasedConfigurationManager==null){
+            synchronized (FileBasedConfigurationManagerImpl.class){
+                if(fileBasedConfigurationManager==null){
+                    fileBasedConfigurationManager=new FileBasedConfigurationManagerImpl();
+                }
+            }
+        }
+        return fileBasedConfigurationManager;
     }
 
     public static void resetInstance() {
-        // TODO Auto-generated method stub
+        synchronized (FileBasedConfigurationManagerImpl.class) {
+            fileBasedConfigurationManager = null;
+        }
     }
 
 }
\ No newline at end of file