Tim Moores wrote: many of which are not elastic at all.
Tim Holloway wrote:Elastic Compute Cloud (EC2) isn't elastic?
Tim Holloway wrote:Some of them provide scalable resources, but some of them are such that a single resource instance can handle the entire client infrastructure.
Tim Moores wrote:It's probably easiest to check Amazon's documentation on the particular services that you are interested in.
Jeanne Boyarsky wrote:DynamoDB is elastic.
Tim Holloway wrote:It's called elastic because it can be scaled dynamically. That is, you scan spin up and down identical copies (instances) of the elastic service without having to start/stop/pause the operation of that service.
It's called elastic because it can be scaled dynamically.
Monica Shiralkar wrote:
In that case how are elasticity and scalability different?
Tim Cooke wrote:EC2 is not an 'elastic' service.
Tim Holloway wrote:
If I have 10 instances of Tomcat and I need 15 and I can add the extra 5 servers without major changes in how things are set up, that is scalable.
If I can do so without having to pause or stop or otherwise interfere with the existing servers or their environment, then that is also elastic. And especially if I can go the opposite direction - removing servers without interfering with processing, then that is elastic.