Yawn

A high-performance WEB server implemented in C++, which can achieve tens of thousands of QPS after webbenchh stress test.

Introduction

The implementation includes the following aspects:

• Use half-synchronous/half-reactive pattern to achieve high concurrency.
  • main thread: I/O multiplexing asynchronous thread
    • Use the epoll mechanism to achieve I/O multiplexing.
  • working threads: logic unit synchronous thread
    • Use the thread pool to store working threads to improve the efficiency of concurrent processing of requests.
• Encapsulate the standard library container deque to implement blocking queue.
• Encapsulate the standard library container vector<char> to implement an automatically growing buffer.
• Implement a log module that can write asynchronously or synchronously.
  • Asynchronous log writing is implemented using the blocking queue and an independent writing thread
• Use the min heap to implement a timer container for closing inactive connections that timeout.
• Implement parsing of non-nested key-value pair configuration files based on the standard library container unordered_map.
• Implement a database connection pool to improve the efficiency of customer requests to the database.
  • Use the RAII(Resource Acquisition Is Initialization) mechanism to obtain connections from the pool.
• Encapsulate each http request into an http connection object.
  • Use the FSM (finite state machine) and regular expression to parse http requests
• Implement a timer container based on a min-heap to close inactive connections that time out.

Build and Run

Create the database (optional)

CREATE DATABASE your_db_name;
USE your_db_name;

CREATE TABLE users(
    id INT PRIMARY KEY AUTO_INCREMENT,
    username CHAR(50) UNIQUE KEY NOT NULL,
    password CHAR(50) NOT NULL
) ENGINE=InnoDB;

Compile and Run

Compile via make

git clone https://github.com/fansuregrin/WebServer.git WebServer
cd ./WebServer/src
make
../bin/yawn [YOUR_SERVER_CONFIG_FILE]

Compile via CMake

git clone https://github.com/fansuregrin/WebServer.git WebServer
cd WebServer
mkdir build && cd build
cmake ..
camke --build .
./yawn [YOUR_SERVER_CONFIG_FILE]

TODO Lists

• Use gtest to re-write test code.
• Implement processing of HTTP range requests.
• Implement forwarding of Post requests.

Acknowledgements

• TinyWebServer
• WebServer
• 《Linux 高性能服务器编程》 written by 游双
• Webbench