Ask Solem 12 年之前
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共有 1 个文件被更改,包括 4 次插入3 次删除
  1. 4 3
      docs/userguide/tasks.rst

+ 4 - 3
docs/userguide/tasks.rst

@@ -576,9 +576,10 @@ You can also define :ref:`custom-states`.
 Result Backends
 Result Backends
 ---------------
 ---------------
 
 
-Celery needs to store or send the states somewhere.  There are several
-built-in backends to choose from: SQLAlchemy/Django ORM, Memcached,
-RabbitMQ (amqp), MongoDB, and Redis -- or you can define your own.
+If you want to keep track of tasks or need the return values, then Celery
+must store or send the states somewhere so that they can be retrieved later.
+There are several built-in result backends to choose from: SQLAlchemy/Django ORM,
+Memcached, RabbitMQ (amqp), MongoDB, and Redis -- or you can define your own.
 
 
 No backend works well for every use case.
 No backend works well for every use case.
 You should read about the strengths and weaknesses of each backend, and choose
 You should read about the strengths and weaknesses of each backend, and choose