3e561736b2
By caching the number of personal SSH keys we reduce the number of queries necessary on pages such as ProjectsController#show (which can end up querying this data multiple times). The cache is refreshed/flushed whenever an SSH key is added, removed, or when a user is removed.
34 lines
714 B
Ruby
34 lines
714 B
Ruby
# Base class for services that count a single resource such as the number of
|
|
# issues for a project.
|
|
class BaseCountService
|
|
def relation_for_count
|
|
raise(
|
|
NotImplementedError,
|
|
'"relation_for_count" must be implemented and return an ActiveRecord::Relation'
|
|
)
|
|
end
|
|
|
|
def count
|
|
Rails.cache.fetch(cache_key, raw: raw?) { uncached_count }.to_i
|
|
end
|
|
|
|
def refresh_cache
|
|
Rails.cache.write(cache_key, uncached_count, raw: raw?)
|
|
end
|
|
|
|
def uncached_count
|
|
relation_for_count.count
|
|
end
|
|
|
|
def delete_cache
|
|
Rails.cache.delete(cache_key)
|
|
end
|
|
|
|
def raw?
|
|
false
|
|
end
|
|
|
|
def cache_key
|
|
raise NotImplementedError, 'cache_key must be implemented and return a String'
|
|
end
|
|
end
|