Apr 10, 2026 · Operations

How to Block Foreign IPs with NGINX and the ngx_http_geoip2 Module

This step‑by‑step guide shows how to install the GeoIP2 library, compile NGINX 1.18 with the ngx_http_geoip2 module, download the latest MaxMind GeoLite2 database, configure geoip2 directives, and verify that foreign IP requests are blocked with a 404 response.

NginxServer Securityblock foreign IP

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How to Block Foreign IPs with NGINX and the ngx_http_geoip2 Module

vivo Internet Technology

Apr 20, 2022 · Backend Development

FastDFS Overview: Principles, Architecture, Upload/Download Process, Synchronization, and Storage Management

FastDFS is a lightweight, open‑source distributed file system written in C that uses a three‑component architecture—client, tracker server for load‑balancing and discovery, and storage servers with push‑based binlog replication—to handle high‑concurrency upload/download of small to medium files, support group‑wide synchronization, optional trunk storage, Nginx anti‑leech integration, and extensible deduplication via FastDHT.

Distributed File SystemFastDFSSynchronization

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FastDFS Overview: Principles, Architecture, Upload/Download Process, Synchronization, and Storage Management