cloudonaut Posted September 14, 2015 Share Posted September 14, 2015 Thanks to the cloud, highly available systems are becoming the new standard. Creating an architecture offering high availability or even fault tolerance is affordable nowadays as you can use ready-to-use building blocks. On top of that, you can operate a highly available infrastructure in the cloud with almost no extra costs. AWS offers managed services with built-in high availability or even fault tolerance: Load Balancer (ELB) is fault tolerant SQL database (RDS) is highly available on demand No-SQL database (DynamoDB) is fault tolerant Object Store (S3) is fault tolerant The virtual server (EC2) itself is not high available or fault tolerant as the underlying virtualization or hardware might fail. But tools are helping you to build a high available infrastructure based on virtual servers. Building blocks for high availability The following figure shows a typical architecture for web applications offering high availability. The building blocks are: Load Balancer (ELB) fault tolerant by default routing requests to healthy virtual servers. Running virtual servers in different data centers (Availability Zone) in the same region. Running an SQL database which replicates all data from the master database to a standby database in another data center (Multi-AZ deployment). /images/2015/09/Amazon-Web-Services-faulttolerant-2.gif All parts of this architecture are highly available. There is no single-point-of-failure left. View the full article Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.