This exception type (and others in its family) can be thrown when invalid file access occurs, which is most likely to occur when implementing a local application when debugging is easier. Networking errors can also result in this exception being thrown, which is more critical when this happens in production web applications or services.

It is particularly interesting how often connections can fall down at the network layer – for instance, database query timeouts. These can be quite frequent, especially if your code is running in a public cloud with noisy neighbours, or in general if resource contention is a factor. Raygun will capture instances of these exceptions, giving you insights as to how often these are occurring over time, which would be very difficult to see from view log files.

#java