Celery is…

Simple

Celery is easy to use and maintain, and it doesn’t need configuration files.

It has an active, friendly community you can talk to for support, including a mailing-list and an IRC channel.

Here’s one of the simplest applications you can make:
```
  from celery import Celery

  app = Celery('hello', broker='amqp://guest@localhost//')

  @app.task
  def hello():
      return 'hello world'
```
Highly Available

Workers and clients will automatically retry in the event of connection loss or failure, and some brokers support HA in way of Master/Master or Master/Slave replication.
Fast

A single Celery process can process millions of tasks a minute, with sub-millisecond round-trip latency (using RabbitMQ, py-librabbitmq, and optimized settings).
Flexible

Almost every part of Celery can be extended or used on its own, Custom pool implementations, serializers, compression schemes, logging, schedulers, consumers, producers, autoscalers, broker transports and much more.

It supports

Brokers

RabbitMQ, Redis,
MongoDB (exp), ZeroMQ (exp)
CouchDB (exp), SQLAlchemy (exp)
Django ORM (exp), Amazon SQS, (exp)
and more…
Concurrency
prefork (multiprocessing),
Eventlet, gevent
threads/single threaded
Result Stores
- AMQP, Redis
- memcached, MongoDB
- SQLAlchemy, Django ORM
- Apache Cassandra
Serialization
- pickle, json, yaml, msgpack.
- zlib, bzip2 compression.
- Cryptographic message signing.

什么是celery

　 Celery 易于使用和维护，并且它不需要配置文件。

　 Celery 有一个活跃、友好的社区来让你寻求帮助，包括一个邮件列表和一个 IRC 频道。

　下面是一个你可以实现的最简应用：

```
from celery import Celery

app = Celery('hello', broker='amqp://guest@localhost//')

@app.task
def hello():
    return 'hello world'
```

支持的功能