Scalable Architecture

• Scaler :
  • front end.
  • load balancers
  • web caching/ squid
  • connection pooling to Apache/Web Server machines
  • mark down/up machines
• Web Server
  • Apache or lighttpd
• Distributed Databases or XXXX
  • might have a grid network here that is specialized to serve specail needs besides the generic databases. Example - CDNs (content delivery networks).
  • each web server does NOT necessarialy connect to all databases.
  • Can have caching before database / networks....example memcached.