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Overview SkyWalking is an open-source observability platform designed for collecting, analyzing, aggregating, and visualizing data from services and cloud-native infrastructure. It offers a streamlined approach to maintaining visibility across distributed systems, including those spanning cloud environments. As a modern Application Performance ...

Nginx Configuration File Locations: The location of Nginx configuration files varies depending on the installation method. Source Code Compilation: Typically found in /usr/local/nginx/conf directory. Yum Installation: Usually in /etc/nginx/ directory (main configuration file) and /etc/nginx/conf.d directory. Docker Container: Generally located ...

Network Architecture Models Computer networking architectures are typically standardized using layered models. The Open Systems Interconnection (OSI) model defines seven layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application. The TCP/IP model condenses these into four layers: Network Interface, Internet, Transpo ...

Environment and Nginx Installation Assume a CentOS 7 environment targeting Nginx 1.18+. Begin by configuring the official package repository and installing the binary. Ensure the http_ssl_module is compiled into the binary, as it is mandatory for TLS termination. # Install repository management utility yum install -y yum-utils # Create reposit ...

This section covers fundamental concepts in frontend development related to communication, essential for interviews in 2023. It delves into server-side rendering (SSR), client-side rendering (CSR), HTTP protocols, caching mechanisms, asynchronous operations, cross-origin resource sharing (CORS), and web security. Server-Side Rendering (SSR) vs. ...

Head-of-Line Blocking in HTTP ProtocolsHead-of-line blocking manifests differently across protocol versions. At the TCP layer, when a packet is lost, subsequent data arriving out-of-order must wait in the buffer until retransmission completes. This affects HTTP/2 streams—even though multiple streams can multiplex over a single connection, a los ...

Overview RoadRunner provides built-in support for HTTPS and HTTP/2 protocols. This guide explains how to configure secure connections and leverage advanced HTTP features. HTTPS Configuration Enable HTTPS by adding the ssl section within the http configuration block: http: # Server binding address address: 127.0.0.1:8080 ssl: # HTTPS ...

Backend Packaging Notes Configure proxy bypass in the backend to allow specific domain access. Write two allowed domains: your configured domain and the server IP address. During frontend development, ports are used; in production, omit ports to avoid lock-in. application.yml Configuration server: port: 9999 servlet: context-path: /api ...

Installation Process To install acme.sh: wget -O - https://get.acme.sh | sh -s email=admin@domain.com source ~/.bash_profile The installation performs these actions: Creates a directory at ~/.acme.sh/ Sets up a shell alias for easy access Configures a cron job for automatic certificate renewal Certificate Authority Selection Switch between d ...

Securing Internal Pods with HTTPS via Ingress When the internal pods communicate over HTTPS, the Ingress must be configured accordingly to ensure proper handling of encrypted traffic. Below is an example configuration that sets up an NGINX Ingress to forward traffic to HTTPS backend services. apiVersion: networking.k8s.io/v1 kind: Ingress meta ...