campaign sending prototype

src/govoplan_mail/backend/sending/rate_limit.py

@@ -21,18 +21,23 @@ def _redis_client() -> Redis:
     return Redis.from_url(settings.redis_url, decode_responses=True)
 
 
+def _distributed_rate_limit_enabled() -> bool:
+    return bool(getattr(settings, "celery_enabled", False))
+
+
 def wait_for_rate_limit(*, key: str, messages_per_minute: int, enabled: bool = True) -> RateLimitDecision:
     """Throttle sends across worker processes using Redis when available.
 
     The implementation stores the next allowed send timestamp per key. A Redis
     lock keeps multiple Celery processes from reading/updating the timestamp at
-    the same time. If Redis is unavailable, it falls back to no distributed wait;
-    the per-container Celery concurrency still protects local development.
+    the same time. Direct local development runs do not have a broker, so Redis
+    is only used when Celery/worker mode is explicitly enabled. If Redis is
+    unavailable, it falls back to no distributed wait.
     """
 
     messages_per_minute = max(1, int(messages_per_minute or 1))
     gap = 60.0 / messages_per_minute
-    if not enabled:
+    if not enabled or not _distributed_rate_limit_enabled():
         return RateLimitDecision(key=key, messages_per_minute=messages_per_minute, gap_seconds=gap, waited_seconds=0.0)
 
     redis_key = f"multimailer:ratelimit:{key}:next_allowed"