Cache errors on views fails the whole view

[ottusp]

Context

@cache_response decorator is used to apply cache to view sets. Usually, attempts to fetch cached data is a "nice to have" to any view call in terms of performance. Therefore, any error on cache should not fail the view call. Instead, a more resilient approach is to ignore cache on errors, and proceed to usual view call.

Issue

When an error occurs on cache layer, it is propagated to the application layer without giving the chance for upstream code to catch it and proceed with whatever approach it wants to - be that log the error, raise a new exception or simply run the view action normally without cache.

Suggestions

• Add the behavior for cache_response to proceed with view action call when cache call fails;
• Add the option to call a handler when a cache error occur.