Taken from: http://blog.serverfault.com/2011/02/11/stack-exchanges-architecture-in-bullet-points/
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
W********n 发帖数: 254
2
stack exchange就是Joel Spolsky在show off his love for MS stack.
