Implement conditional HTTP fetching for issue #16 using ETag/If-None-Match or Last-Modified/If-Modified-Since headers. If server determines the feed has not changed they return HTTP status code 304 "Not Modified" without a response body.
Implementing the basic functionality was easy; Integrating 304 response handling is more subtle. I've tried to leave comments about HTTP header semantics to explain my choices.
Note: alembic changes to allow database creation are in a single commit that I can get rid of.
For initial review/comments/questions.
Implement conditional HTTP fetching for issue #16 using ETag/If-None-Match or Last-Modified/If-Modified-Since headers. If server determines the feed has not changed they return HTTP status code 304 "Not Modified" without a response body.
Implementing the basic functionality was easy; Integrating 304 response handling is more subtle. I've tried to leave comments about HTTP header semantics to explain my choices.
Note: alembic changes to allow database creation are in a single commit that I can get rid of.