由Kyle Brandt发布在http://blog.serverfault.com/2011/02/11/stack-exchanges-architecture-in-bullet-points/
I thought as a break form the normal prose some of our readers might enjoy a short overview of the Stack Exchange Network (including Stack Overflow, Server Fault, and Super User) from a technical view:
Traffic:
- 95 Million Page Views a Month
- 800 HTTP requests a second
- 180 DNS requests a second
- 55 Megabits per second
Data Centers:
- 1 Rack with Peak Internet in OR (Hosts our chat and Data Explorer)
- 2 Racks with Peer 1 in NY (Hosts the rest of the Stack Exchange Network)
Production Servers*:
- 12 Web Servers (Windows Server 2008 R2)
- 2 Database Servers (Windows Server 2008 R2 and SQL Server 2008 R2)
- 2 Load Balancers (Ubuntu Server and HAProxy)
- 2 Caching Servers (Redis on CentOS)
- 1 Router / Firewall (Ubuntu Server)
- 3 DNS Servers (Bind on CentOS)
Software and Technologies Used:
- C# / .NET
- Windows Server 2008 R2
- SQL Server 2008 R2
- Ubuntu Server
- CentOS
- HAProxy for load balancing
- Redis for caching
- CruiseControl.NET for builds
- Lucene.NET for search
- Bacula for backups
- Nagios (with n2rrd and drraw plugins) for monitoring
- Splunk for logs
- SQL Monitor from Red Gate for SQL Server monitoring
- Mercurial / Kiln for source control
- Bind for DNS
Developers and System Administrators:
- 14 Developers
- 2 System Administrators
*(excludes fail over and management servers)
Posted by Kyle Brandt (@kylembrandt) on February 11th, 2011
Filed under Hardware, Software