CDN Breakthroughs
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CDN Breakthroughs
Monitoring innovations in CDN, CDN Federation, Cloud, SDN, Security, Caching, Load Balancing, Video/DRM delivery strategies & tools
Curated by Nicolas Weil
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Netflix builds a tool for jumping between Amazon clouds

Netflix builds a tool for jumping between Amazon clouds | CDN Breakthroughs | Scoop.it

Netflix clearly has learned from its Christmas Eve outage, which involved the failure of Amazon Web Services’ Elastic Load Balancing service, and has created a tool called Isthmus to solve the problem.

 

In a Friday blog post, Netflix’s Ruslan Meshenberg explained that Isthmus manages Elastic Load Balancing services in multiple regions in order to keep latency low for users in the event that ELB goes down in one region. On Christmas Eve, the issue was that state data got deleted, causing issues for the control plane tasked with managing load-balancer configuration and bringing some down some ELB load balancers. Now that sort of error could be less likely to affect Netflix service.

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[How-to] DNS based session persistence with latency based routing

[How-to] DNS based session persistence with latency based routing | CDN Breakthroughs | Scoop.it

Many applications require each HTTP request, from a particular client, be directed to the same server or cloud instance. This is called session persistence and is common with web applications that do not share application “state” between back-end servers or data stores.

 

In the past, this has been solved using local Load Balancers such as those provided by F5 or Brocade or more recently with the Elastic Load Balancer from Amazon. However, as application architects look to serve a global audience and deploy their applications to multiple data centers it becomes necessary to ensure session persistence at a global and local level.

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