Optimize C++ server throughput strategy: Thread pool: Create a thread pool in advance to respond to requests quickly. Non-blocking I/O: Perform other tasks while waiting for I/O to improve throughput. HTTP/2: Uses a binary protocol, supports multiplexing and content compression, and improves performance.
In modern applications, server throughput is critical. In this article, we'll explore some strategies for optimizing throughput in C++ server applications and provide concrete practical examples.
Thread pool is a common strategy in asynchronous server design to improve throughput. By pre-creating threads and storing them in a pool, the server can quickly respond to incoming requests without waiting for thread creation.
Practical case:
// 创建线程池 std::shared_ptr<ThreadPool> pool = std::make_shared<ThreadPool>(4); // 处理请求的函数 void handleRequest(std::shared_ptr<Request> request) { // ... } // 主线程循环 while (true) { auto request = server.accept(); if (request) { pool->submit(std::bind(handleRequest, request)); } }
Non-blocking I/O allows the server to perform other operations while waiting for the I/O operation to complete. Task. This can significantly improve throughput under high concurrency conditions.
Practical case:
// 创建非阻塞套接字 int sock = socket(AF_INET, SOCK_STREAM | SOCK_NONBLOCK, 0); // 监听套接字 int ret = bind(sock, (sockaddr*)&addr, sizeof(addr)); if (ret < 0) { // 处理错误 } ret = listen(sock, 10); if (ret < 0) { // 处理错误 } // 主线程循环 while (true) { struct pollfd pollfds[1]; pollfds[0].fd = sock; pollfds[0].events = POLLIN; int ret = poll(pollfds, 1, -1); if (ret < 0) { // 处理错误 } else if (pollfds[0].revents & POLLIN) { // 接受新连接 } }
HTTP/2 is a binary protocol, compared with HTTP/1.1, it has more Good throughput. It allows for multiplexing, server push, and content compression to improve performance.
Practical case:
// 使用 OpenSSL 创建安全的 HTTP/2 服务器 SSL_CTX *ctx = SSL_CTX_new(TLS_server_method()); // 监听套接字 int sock = listen(ctx, sockfd, 10); // 主线程循环 while (true) { struct pollfd pollfds[1]; pollfds[0].fd = sock; pollfds[0].events = POLLIN; int ret = poll(pollfds, 1, -1); if (ret < 0) { // 处理错误 } else if (pollfds[0].revents & POLLIN) { // 接受新连接 SSL *ssl = SSL_new(ctx); SSL_set_fd(ssl, sockfd); } }
By implementing these strategies, you can significantly improve the throughput of your C++ server application. The specific implementation depends on the specific requirements and limitations of the application.
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