January 2018
Intermediate to advanced
350 pages
9h 7m
English
Content preview from Java EE 8 High Performance
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
Start your free trial
Failover
In a distributed system, it is very important to ensure that you know how to handle failures. Java EE applications being more and more connected to other systems, they face this challenge more and more, so it is important to know how you will deal with failover when it happens.
The first meaning of failover is, indeed, to fail over. It can be rephrased as the capability to switch to a backup system when the primary system fails. In Java EE applications, there are lots of places where this can be set up, but they are all related to external systems:
- Databases: If a database connection fails, how to still handle the requests?
- JMS: If a broker fails, what to do?
- Other network API (such as SOAP or REST API): If the remote server is ...