Stack Overflow 系統架構 - 2016

Stack overflow 放出網站架構的資訊，包含架構圖、環境、平台、連線數等等。

Stack Overflow 系統架構 2016年版

內容詳見：Nick Craver - Stack Overflow: The Architecture - 2016 Edition，下面內容摘錄自此篇：

架構圖

架構圖備份

機器

• 4 Microsoft SQL Servers (new hardware for 2 of them)
• 11 IIS Web Servers (new hardware)
• 2 Redis Servers (new hardware)
• 3 Tag Engine servers (new hardware for 2 of the 3)
• 3 Elasticsearch servers (same)
• 4 HAProxy Load Balancers (added 2 to support CloudFlare)
• 2 Networks (each a Nexus 5596 Core + 2232TM Fabric Extenders, upgraded to 10Gbps everywhere)
• 2 Fortinet 800C Firewalls (replaced Cisco 5525-X ASAs)
• 2 Cisco ASR-1001 Routers (replaced Cisco 3945 Routers)
• 2 Cisco ASR-1001-x Routers (new!)