NGINX and PM2: Improve the performance and stability of VPS servers

1. The first choice for the Laravel MySQL Vue/React combination in the PHP development question and answer community is the first choice for Laravel MySQL Vue/React combination, due to its maturity in the ecosystem and high development efficiency; 2. High performance requires dependence on cache (Redis), database optimization, CDN and asynchronous queues; 3. Security must be done with input filtering, CSRF protection, HTTPS, password encryption and permission control; 4. Money optional advertising, member subscription, rewards, commissions, knowledge payment and other models, the core is to match community tone and user needs.

When Nginx experiences a "Toomyopenfiles" error, it is usually because the system or process has reached the file descriptor limit. Solutions include: 1. Increase the soft and hard limits of Linux system, set the relevant parameters of nginx or run users in /etc/security/limits.conf; 2. Adjust the worker_connections value of Nginx to adapt to expected traffic and ensure the overloaded configuration; 3. Increase the upper limit of system-level file descriptors fs.file-max, edit /etc/sysctl.conf and apply changes; 4. Optimize log and resource usage, and reduce unnecessary file handle usage, such as using open_l

The core role of Homebrew in the construction of Mac environment is to simplify software installation and management. 1. Homebrew automatically handles dependencies and encapsulates complex compilation and installation processes into simple commands; 2. Provides a unified software package ecosystem to ensure the standardization of software installation location and configuration; 3. Integrates service management functions, and can easily start and stop services through brewservices; 4. Convenient software upgrade and maintenance, and improves system security and functionality.

To enable Nginx's HTTP/2 or HTTP/3 support, the prerequisites must be met and configured correctly; HTTP/2 requires Nginx1.9.5, OpenSSL1.0.2 and HTTPS environment; add --with-http_v2_module module during configuration, modify the listening statement to listen443sslhttp2; and overload the service; HTTP/3 is based on QUIC, and third-party modules such as nginx-quic are required to introduce BoringSSL or OpenSSLQUIC branches during compilation, and configure UDP listening ports; common problems during deployment include ALPN not enabled, certificate incompatible, firewall restrictions and compilation errors, it is recommended to use priority

Virtual threads have significant performance advantages in highly concurrency and IO-intensive scenarios, but attention should be paid to the test methods and applicable scenarios. 1. Correct tests should simulate real business, especially IO blocking scenarios, and use tools such as JMH or Gatling to compare platform threads; 2. The throughput gap is obvious, and it can be several times to ten times higher than 100,000 concurrent requests, because it is lighter and efficient in scheduling; 3. During the test, it is necessary to avoid blindly pursuing high concurrency numbers, adapting to non-blocking IO models, and paying attention to monitoring indicators such as latency and GC; 4. In actual applications, it is suitable for web backend, asynchronous task processing and a large number of concurrent IO scenarios, while CPU-intensive tasks are still suitable for platform threads or ForkJoinPool.

In NGINX configuration, the @ symbols within the location block are used to define named locations. These are internally used endpoints and cannot be matched directly by the client request. They are usually called via the error_page, try_files, or rewrite directives. 1. The naming location starts with @. For example, location@notfound will not respond to direct requests, but trigger from other configuration parts; 2. It is often used for custom error handling, internal routing and backend agent backing; 3. For example, combined with try_files, forwarding to @backend when static files do not exist; 4. Notes include: not directly accessed, avoiding naming conflicts, and using descriptive names. Named locations can include

C# code performance optimization requires tools rather than intuition. BenchmarkDotNet is the first choice for benchmarking. 1. Automatically handle JIT warm-up and GC effects by scientifically comparing the execution efficiency of different methods; 2. Profiling using tools such as VisualStudio, dotTrace or PerfView to find the truly time-consuming "hot spot" functions; 3. Pay attention to memory allocation, combine [MemoryDiagnoser], DiagnosticTools and PerfView to analyze GC pressure, reduce object creation in high-frequency paths, and give priority to using structures or pooling technology to reduce GC burden.

To solve the problem of inconsistency between PHP environment and production, the core is to use Kubernetes' containerization and orchestration capabilities to achieve environmental consistency. The specific steps are as follows: 1. Build a unified Docker image, including all PHP versions, extensions, dependencies and web server configurations to ensure that the same image is used in development and production; 2. Use Kubernetes' ConfigMap and Secret to manage non-sensitive and sensitive configurations, and achieve flexible switching of different environment configurations through volume mounts or environment variable injection; 3. Ensure application behavior consistency through unified Kubernetes deployment definition files (such as Deployment and Service) and include in version control; 4.