Rename project to "Key Value Store Server" and optimize response handling in client processing

prak3/readme.md

-# DataTransfer 📄🚀
+# Key Value Store Server 📄🚀
 
 A simple C++ program for **efficient block-wise reading of large files** and outputting their content to standard output.  
 It utilizes `fread` to read data in configurable block sizes, which can be set via command-line arguments.

prak3/src/server.cpp

@@ -220,6 +220,7 @@ std::string processRequest_shared_mtx(const std::string& request) {
 
 void handle_client(int client_socket) {
     
+    std::string response;
 
     while (true) { // warte bis der Client die Verbindung trennt
 
@@ -242,7 +243,6 @@ void handle_client(int client_socket) {
         
         body_length = static_cast<int>(body_lenght_byte);
         
-        std::string response;
         if (body_length != 0) { 
            
             bytes_received = 0;
@@ -263,7 +263,7 @@ void handle_client(int client_socket) {
 
         // Anfragezähler inkrementieren
         request_count.fetch_add(1, std::memory_order_relaxed);
-        send(client_socket, response.c_str(), response.size(), 0);
+        send(client_socket, response.c_str(), response.size(), MSG_ZEROCOPY);
     }
 
     close(client_socket);