`_get_linear_service()` returns a process-wide singleton whose `_workflow_states_cache` is populated on first call and never invalidated. If a Linear admin renames or adds workflow states, every Firetower process will keep using stale state IDs (potentially writing to a nonexistent state) until the worker is restarted. This is the service used in `sync_action_items_from_linear` at line 232.

`_get_linear_service()` returns a process-wide singleton whose `_workflow_states_cache` is populated on first call and never invalidated. If a Linear admin renames or adds workflow states, every Firetower process will keep using stale state IDs (potentially writing to a nonexistent state) until the worker is restarted. This is the service used in `sync_action_items_from_linear` at line 232.

ActionItemListView.list() calls sync_action_items_from_linear(incident) on every GET request. Performing write/sync side effects on a GET violates HTTP semantics and can cause unintended behavioral changes (extra Linear API calls, DB writes) whenever clients, crawlers, or retries hit the endpoint. Although described as throttled, the sync is still invoked synchronously inside the request path, which can also slow down list responses and hide Linear outages from users when failures are only logged.

ActionItemListView.list() calls sync_action_items_from_linear(incident) on every GET request. Performing write/sync side effects on a GET violates HTTP semantics and can cause unintended behavioral changes (extra Linear API calls, DB writes) whenever clients, crawlers, or retries hit the endpoint. Although described as throttled, the sync is still invoked synchronously inside the request path, which can also slow down list responses and hide Linear outages from users when failures are only logged.

get_queryset only select_related's assignee__userprofile. If ActionItemSerializer references other related fields (e.g. created_by, linear metadata, or many-to-many relations), each serialized item will issue extra queries, producing an N+1 pattern on the list endpoint. Consider adding the necessary select_related/prefetch_related based on the serializer's fields.

get_queryset only select_related's assignee__userprofile. If ActionItemSerializer references other related fields (e.g. created_by, linear metadata, or many-to-many relations), each serialized item will issue extra queries, producing an N+1 pattern on the list endpoint. Consider adding the necessary select_related/prefetch_related based on the serializer's fields.