We operate a high availability network infrastructure.
We operate through Amazon AWS using the EU West Region. Our webserver is connected to an Elastic Load Balancer, which scales up the required assets within two availability zones (two distinct network locations within the EU West Region). This means network location disaster (such as power outage or fire) would not afffect availability of service or data.
Within each availability zone, we run four main services:
Each of these four servers are replicated in each availability zone, for maximum availability.
Static Assets (such as images and scripts) are stored in Amazon S3 and delivered via CloudFront, the Amazon content delivery network for high speed and caching availability.
Files stored in our application (user uploaded documents) are Stored in S3 also, with versioning turned on.
S3 documents are replicated in each Amazon AWS Region (US - N.Virginia, US - Oregon, US - California, EU - Ireland, EU - Frankfurt, Asia - Singapore, Asia - Tokyo, Asia -Seoul, Australia - Sydney, South America - Sao Paulo).