accounts for bursts of traffic. Rate limits can be set for each task type, or globally for all. Routing Using AMQP you can route tasks arbitrarily to different workers. Remote- control You can rate limit Retrying a task if something fails – Using a custom retry delay • Task options – Message and routing options • Example – blog/models.py – blog/views.py – blog/tasks.py • How it works • Tips and Best exchange and routing key used to deliver this task. It’s used by e.g. retry() to resend the task to the same destination queue. NOTE As some messaging backends doesn’t have advanced routing capabilities

Executing Tasks Workers Guide Sets of tasks, Subtasks and Callbacks HTTP Callback Tasks (Webhooks) Routing Tasks Configuration and defaults Example configuration file Concurrency settings Task result backend accounts for bursts of traffic. Rate limits can be set for each task type, or globally for all. Routing Using AMQP you can route tasks arbitrarily to different workers. Remote-control You can rate limit Strategies Executing Tasks Basics ETA and countdown Serializers Connections and connection timeouts. Routing options AMQP options Workers Guide Starting the worker Stopping the worker Restarting the worker

bursts of traffic. Rate limits can be set for each task type, or globally for all. Routing Using AMQP’s flexible routing model you can route tasks to different workers, or select different message topologies User Guide Release 2.3 Date February 04, 2014 2.1 Overview • Tasks • Workers • Monitoring • Routing Figure 2.1: Figure 1: Worker and broker nodes. To use Celery you need at least two main components; Monitoring and Management Guide. 2.1.4 Routing Figure 2.2: Figure 2: Worker bindings. Go to Routing Tasks. Celery takes advantage of AMQPs flexible routing model. Tasks can be routed to specific servers

Callback Tasks (Webhooks) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 2.8 Routing Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . bursts of traffic. Rate limits can be set for each task type, or globally for all. Routing Using AMQP’s flexible routing model you can route tasks to different workers, or select different message topologies User Guide Release 2.2 Date February 04, 2014 2.1 Overview • Tasks • Workers • Monitoring • Routing Figure 2.1: Figure 1: Worker and broker nodes. To use Celery you need at least two main components;

Workers Guide Periodic Tasks Sets of tasks, Subtasks and Callbacks HTTP Callback Tasks (Webhooks) Routing Tasks Monitoring and Management Guide Optimizing Concurrency Configuration and defaults Cookbook bursts of traffic. Rate limits can be set for each task type, or globally for all. Routing Using AMQP’s flexible routing model you can route tasks to different workers, or select different message topologies please go here. User Guide Release: 2.2 Date: February 04, 2014 Overview Tasks Workers Monitoring Routing Tasks Basics Context Logging Retrying a task if something fails Task options Task names Decorating

Callback Tasks (Webhooks) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 2.8 Routing Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . accounts for bursts of traffic. Rate limits can be set for each task type, or globally for all. Routing Using AMQP you can route tasks arbitrarily to different workers. Remote- control You can rate limit User Guide Release 2.1 Date February 04, 2014 2.1 Overview • Tasks • Workers • Monitoring • Routing Figure 2.1: Figure 1: Worker and broker nodes. To use Celery you need at least two main components;

Workers Guide Periodic Tasks Sets of tasks, Subtasks and Callbacks HTTP Callback Tasks (Webhooks) Routing Tasks Monitoring Guide Optimizing Configuration and defaults Example configuration file Configuration accounts for bursts of traffic. Rate limits can be set for each task type, or globally for all. Routing Using AMQP you can route tasks arbitrarily to different workers. Remote-control You can rate limit please go here. User Guide Release: 2.1 Date: February 04, 2014 Overview Tasks Workers Monitoring Routing Tasks Basics Default keyword arguments Logging Retrying a task if something fails Task options

Workers Guide Periodic Tasks Sets of tasks, Subtasks and Callbacks HTTP Callback Tasks (Webhooks) Routing Tasks Monitoring and Management Guide Optimizing Concurrency Configuration and defaults Cookbook bursts of traffic. Rate limits can be set for each task type, or globally for all. Routing Using AMQP’s flexible routing model you can route tasks to different workers, or select different message topologies go here. User Guide Release: 2.3 Date: February 04, 2014 Overview Tasks Workers Monitoring Routing Tasks Basics Context Logging Retrying a task if something fails Task options Task names Decorating

bursts of traffic. Rate limits can be set for each task type, or globally for all. Routing Using AMQP’s flexible routing model you can route tasks to different workers, or select different message topologies User Guide Release 2.5 Date February 04, 2014 2.1 Overview • Tasks • Workers • Monitoring • Routing • Ecosystem – Kombu – cyme – celerymon Figure 2.1: Figure 1: Worker and broker nodes. To use Celery Monitoring and Management Guide. 2.1.4 Routing Figure 2.2: Figure 2: Worker bindings. Go to Routing Tasks. Celery takes advantage of AMQPs flexible routing model. Tasks can be routed to specific servers