diff --git a/pyinfra/server/server.py b/pyinfra/server/server.py
index 45d7c87..c41c1b6 100644
--- a/pyinfra/server/server.py
+++ b/pyinfra/server/server.py
@@ -1,11 +1,10 @@
 import logging
-from functools import partial
 
 from flask import Flask, jsonify, request
-from funcy import rcompose, compose, first, chunks, flatten
+from funcy import rcompose
 
-from pyinfra.server.dispatcher.dispatcher import Nothing
 from pyinfra.server.bufferizer.lazy_bufferizer import LazyBufferizer
+from pyinfra.server.dispatcher.dispatcher import Nothing
 from pyinfra.server.utils import unpack, normalize, pack
 from pyinfra.utils.func import starlift, lift
 
@@ -32,20 +31,20 @@ def make_streamable(operation, batched, batch_size):
     return operation
 
 
-class RestStreamProcessor(LazyBufferizer):
+class RestStreamProcessor:
     """Wraps an on-demand-processor. Combine with a webserver that provides the endpoints 'submit' and 'pickup'."""
 
-    def __init__(self, fn, submit_suffix="submit", pickup_suffix="pickup"):
-        super(RestStreamProcessor, self).__init__(fn=fn)
+    def __init__(self, bufferizer, submit_suffix="submit", pickup_suffix="pickup"):
+        self.bufferizer = bufferizer
         self.submit_suffix = submit_suffix
         self.pickup_suffix = pickup_suffix
 
     def submit(self, request, **kwargs):
-        super(RestStreamProcessor, self).submit(request.json)
+        self.bufferizer.submit(request.json)
         return jsonify(request.base_url.replace(self.submit_suffix, self.pickup_suffix))
 
     def pickup(self):
-        result = self.compute_next()
+        result = self.bufferizer.compute_next()
 
         if not valid(result):
             logger.error(f"Received invalid result: {result}")
@@ -68,7 +67,7 @@ def valid(result):
 
 def set_up_processing_server(process_fn):
     app = Flask(__name__)
-    stream = RestStreamProcessor(process_fn, submit_suffix="submit", pickup_suffix="pickup")
+    stream = RestStreamProcessor(LazyBufferizer(process_fn), submit_suffix="submit", pickup_suffix="pickup")
 
     @app.route("/ready", methods=["GET"])
     def ready():