Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
For my application I am using auto scaling, without using elastic load balancing, is there any performance issue for directly using Auto scaling without ELB?
Autoscaling determines, based on some measurement (CPU load is a common measurement), whether or not to increase/decrease the number of instances running.
Load balancing relates to how you distribute traffic to your instances based on domain name lookup, etc. Somewhere you must have knowledge of which IP addresses are those currently assigned to the instances that the autoscaling creates.
You can have multiple IP address entries for A records in the DNS settings and machines will be allocated in a roughly round-robin fashion from that pool. But, keeping the pool up to date in real-time is hard.
The load balancer gives you an easy mechanism to provide a single interface/IP address to the outside world and it has knowledge of which instances it is load balancing in real time.
If you are using autoscaling, unless you are going to create a fairly complex monitoring and DNS updating system, you can reasonably assume that you must use a load balancer as well.