Remove community reports rate limiter (#2056)

* Remove hard-coded community reports rate limiter

* Semver

* Format

* Add memory cache factory

Author: natoverse

.semversioner/next-release/patch-20250915234643851001.json

@@ -0,0 +1,4 @@
+{
+  "type": "patch",
+  "description": "Remove hard-coded community rate limiter."
+}

graphrag/cache/factory.py

@@ -97,9 +97,19 @@ def create_cosmosdb_cache(**kwargs) -> PipelineCache:
     return JsonPipelineCache(storage)
 
 
+def create_noop_cache(**_kwargs) -> PipelineCache:
+    """Create a no-op cache implementation."""
+    return NoopPipelineCache()
+
+
+def create_memory_cache(**kwargs) -> PipelineCache:
+    """Create a memory cache implementation."""
+    return InMemoryCache(**kwargs)
+
+
 # --- register built-in cache implementations ---
-CacheFactory.register(CacheType.none.value, NoopPipelineCache)
-CacheFactory.register(CacheType.memory.value, InMemoryCache)
+CacheFactory.register(CacheType.none.value, create_noop_cache)
+CacheFactory.register(CacheType.memory.value, create_memory_cache)
 CacheFactory.register(CacheType.file.value, create_file_cache)
 CacheFactory.register(CacheType.blob.value, create_blob_cache)
 CacheFactory.register(CacheType.cosmosdb.value, create_cosmosdb_cache)

graphrag/index/operations/summarize_communities/strategies.py

@@ -16,7 +16,6 @@
     Finding,
     StrategyConfig,
 )
-from graphrag.index.utils.rate_limiter import RateLimiter
 from graphrag.language_model.manager import ModelManager
 from graphrag.language_model.protocol.base import ChatModel
 
@@ -51,8 +50,6 @@ async def _run_extractor(
     level: int,
     args: StrategyConfig,
 ) -> CommunityReport | None:
-    # RateLimiter
-    rate_limiter = RateLimiter(rate=1, per=60)
     extractor = CommunityReportsExtractor(
         model,
         extraction_prompt=args.get("extraction_prompt", None),
@@ -63,7 +60,6 @@ async def _run_extractor(
     )
 
     try:
-        await rate_limiter.acquire()
         results = await extractor(input)
         report = results.structured_output
         if report is None: