Implementation is everything

Image #1 for QA series - Check out more posts tagged as NginxThere was an interesting question in the Nginx mailing list regarding replacing Varnish with Nginx as a load balancer. Let me quote the question directly here…

The question:

We are using Varnish in front of 3 load balanced web servers running apache.  We had migrated from one hosting platform where we had 1 app server and 1 database server using Varnish (Drupal 6.x) and had no issues.  Now that we are running in a load balanced environment (3 load balanced apache web servers, a Varnish server, and 1 database server) we are seeing mulitple examples of cacheing issues. (Pages not displaying correctly… style issues, data input staying cached and used on another page, etc).

We think we can just replace the Varnish server and use a NGinx server.  I don’t want to necessarily remove all the apache servers, but we have to get this cacheing issue corrected….

any thoughts…?

Continue reading “Implementation is everything”

What Do You Do For A Day When Your Web Hosting Service Crashes?

Image for the post "what do you do when your web host crashes?"There were two major outages on many sites during the past few weeks.

  1. Amazon AWS EBS degradation
  2. Outage due to Hurricane Sandy

Both these incidents affected many sites hosted in US East. Specifically, there were multiple sites that went offline during the recent Amazon AWS EBS degradation (nice alternative for downtime). Most sites waited helplessly until Amazon fixed it or waited until the after-effects of Sandy to go off. Others did the smartest thing. Moving the entire site to the US West coast. Continue reading “What Do You Do For A Day When Your Web Hosting Service Crashes?”