# By default, all sessions are given the same expiration time configured in
# the session store (e.g. 1 week). However, unauthenticated users can
# generate a lot of sessions, primarily for CSRF verification. It makes
# sense to reduce the TTL for unauthenticated to something much lower than
# the default (e.g. 1 hour) to limit Redis memory. In addition, Rails
# creates a new session after login, so the short TTL doesn't even need to
# be extended.
deflimit_session_time
# Rack sets this header, but not all tests may have it: https://github.com/rack/rack/blob/fdcd03a3c5a1c51d1f96fc97f9dfa1a9deac0c77/lib/rack/session/abstract/id.rb#L251-L259
returnunlessrequest.env['rack.session.options']
# This works because Rack uses these options every time a request is handled: