SQLite for local development. Celery can run on a single machine, on multiple machines, or even across data centers. 6 Chapter 2. Contents Celery Documentation, Release 3.1.25 Get Started If this is the state. – Segmentation fault at start when using RabbitMQ Choosing a Broker Celery requires a solution to send and receive messages; usually this comes in the form of a separate service called a message http://www.rabbitmq.com/download.html Redis Redis is also feature-complete, but is more susceptible to data loss in the event of abrupt termination or power failures. Detailed information about using Redis:

SQLite for local development. Celery can run on a single machine, on multiple machines, or even across data centers. Get Started If this is the first time you’re trying to use Celery, or you are new to Celery PENDING state. Segmentation fault at start when using RabbitMQ Choosing a Broker Celery requires a solution to send and receive messages; usually this comes in the form of a separate service called a message com/download.html Redis Redis [http://redis.io/] is also feature-complete, but is more susceptible to data loss in the event of abrupt termination or power failures. Detailed information about using Redis:

Using Redis Redis is also feature-complete, but power failures or abrupt termination may result in data loss. • Using SQLAlchemy • Using the Django Database Using a database as a message queue is not they’re not used – Avoid launching synchronous subtasks • Performance and Strategies – Granularity – Data locality – State – Database transactions • Example – blog/models.py – blog/views.py – blog/tasks processing other waiting tasks. However, executing a task does have overhead. A message needs to be sent, data may not be local, etc. So if the tasks are too fine-grained the additional overhead may not be worth

SQLite for local development. Celery can run on a single machine, on multiple machines, or even across data centers. 6 Chapter 2. Contents Celery Documentation, Release 4.0.0 Get Started If this is the backend doesn’t work or tasks are always in PENDING state Choosing a Broker Celery requires a solution to send and receive messages; usually this comes in the form of a separate service called a message http://www.rabbitmq.com/download.html Redis Redis is also feature-complete, but is more susceptible to data loss in the event of abrupt termination or power failures. Detailed information about using Redis:

SQLite for local development. Celery can run on a single machine, on multiple machines, or even across data centers. Get Started If this is the first time you’re trying to use Celery, or if you haven’t kept backend doesn’t work or tasks are always in PENDING state Choosing a Broker Celery requires a solution to send and receive messages; usually this comes in the form of a separate service called a message com/download.html Redis Redis [http://redis.io/] is also feature-complete, but is more susceptible to data loss in the event of abrupt termination or power failures. Detailed information about using Redis:

SQLite for local development. Celery can run on a single machine, on multiple machines, or even across data centers. Get Started If this is the first time you’re trying to use Celery, or if you haven’t kept backend doesn’t work or tasks are always in PENDING state Choosing a Broker Celery requires a solution to send and receive messages; usually this comes in the form of a separate service called a message com/download.html Redis Redis [http://redis.io/] is also feature-complete, but is more susceptible to data loss in the event of abrupt termination or power failures. Detailed information about using Redis:

SQLite for local development. Celery can run on a single machine, on multiple machines, or even across data centers. Get Started If this is the first time you’re trying to use Celery, or if you haven’t kept 2. Getting Started 19 Celery Documentation, Release 4.0.1 Choosing a Broker Celery requires a solution to send and receive messages; usually this comes in the form of a separate service called a message http://www.rabbitmq.com/download.html Redis Redis is also feature-complete, but is more susceptible to data loss in the event of abrupt termination or power failures. Detailed information about using Redis:

SQLite for local development. Celery can run on a single machine, on multiple machines, or even across data centers. 6 Chapter 2. Contents Celery Documentation, Release 4.0.0 Get Started If this is the backend doesn’t work or tasks are always in PENDING state Choosing a Broker Celery requires a solution to send and receive messages; usually this comes in the form of a separate service called a message http://www.rabbitmq.com/download.html Redis Redis is also feature-complete, but is more susceptible to data loss in the event of abrupt termination or power failures. Detailed information about using Redis:

SQLite for local development. Celery can run on a single machine, on multiple machines, or even across data centers. Get Started If this is the first time you’re trying to use Celery, or if you haven’t kept 2. Getting Started 19 Celery Documentation, Release 4.0.2 Choosing a Broker Celery requires a solution to send and receive messages; usually this comes in the form of a separate service called a message http://www.rabbitmq.com/download.html Redis Redis is also feature-complete, but is more susceptible to data loss in the event of abrupt termination or power failures. Detailed information about using Redis:

SQLite for local development. Celery can run on a single machine, on multiple machines, or even across data centers. Get Started If this is the first time you’re trying to use Celery, or if you haven’t kept 2. Getting Started 19 Celery Documentation, Release 4.0.2 Choosing a Broker Celery requires a solution to send and receive messages; usually this comes in the form of a separate service called a message http://www.rabbitmq.com/download.html Redis Redis is also feature-complete, but is more susceptible to data loss in the event of abrupt termination or power failures. Detailed information about using Redis: