Persistent Middle Tier Components without Logging

Enterprise applications need to be highly

available and scalable. In the past, this has required

“stateless” applications, which essentially require the

application to manage its state explicitly by storing it

in transactional resource managers. Despite

“stateful” applications being more natural and hence

easier to write and get correct, having the system

manage this state automatically has been considered

too difficult and too costly. The Phoenix/App system

showed how to manage state in stateful applications

transparently, by logging interactions between

components, guaranteeing “exactly once” execution of

the application. By introducing some minor

restrictions on Phoenix/App components, no logging

need be done for middle tier components, thus making

it easy to provide both availability and scalability.

Because there is no logging, the performance of failure

free application executions is excellent.

lometd-logless.pdf
PDF file

In  IDEAS Conference

Publisher  IEEE Computer Society
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