[펌] 스택 오버플로우(stack overflow) 아키텍처

출처 : http://nickcraver.com/blog/2016/02/17/stack-overflow-the-architecture-2016-edition/

윈도우 기반의 서비스로 대용량을 잘 처리하고 있는 아키텍처이다. 필요한 솔루션은 오픈소스(stack exchange 개발자가 리드)로 개발하고 있다.

== 아키텍처

• 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!)

== IDC 장비 사진

http://imgur.com/a/X1HoY

== 라이브러리

• Dapper (.Net Core) - High-performance Micro-ORM for ADO.Net
• StackExchange.Redis - High-performance Redis client
• MiniProfiler - Lightweight profiler we run on every page (also supports Ruby, Go, and Node)
• Exceptional - Error logger for SQL, JSON, MySQL, etc.
• Jil - High-performance JSON (de)serializer
• Sigil - A .Net CIL generation helper (for when C# isn’t fast enough)
• NetGain - High-performance websocket server
• Opserver - Monitoring dashboard polling most systems directly and feeding from Orion, Bosun, or WMI as well.
• Bosun - Backend monitoring system, written in Go