My web app has been chugging along just great in Production for years with one App server and one Web server. Now we're moving to a multi-server environment with 2 App and 3 Web servers. I have enough time to make changes before the go-live.
As a Developer, what considerations should I take into account from coding, deployment, and architectural/ecosystem management perspectives?
Already on my list:
- Remove tight-coupling between servers
- Applicable files (i.e. downloadables) stored in IMAGE fields in SQL instead of files on app server
- Deployment: Take out node out of the farm at a time
Have you given any thought to sticky sessions and cache management?