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

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;

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;

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

Callback Tasks (Webhooks) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 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 2.4 Date January 12, 2016 2.1 Overview • Tasks • Workers • Monitoring • Routing • Ecosystem – Kombu – cyme – celerymon Fig. 2.1: Figure 1: Worker and broker nodes. To use Celery

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 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 registry. Please see Executing Tasks for more information. Message and routing options • routing_key Override the global default routing_key for this task. • exchange Override the global default exchange

Monitoring • Optimizing 2.2. Getting Started 9 Celery Documentation, Release 4.1.0 • Security • Routing • Configuration • Django • Contributing • Signals • FAQ • API Reference Installation You can install projects, a dedicated configuration module is recommended. Hard coding periodic task intervals and task routing options is discouraged. It is much better to keep these in a centralized location. This is especially Celery Documentation, Release 4.1.0 task_routes = { 'tasks.add': 'low-priority', } Or instead of routing it you could rate limit the task instead, so that only 10 tasks of this type can be processed in

Monitoring • Optimizing 2.2. Getting Started 9 Celery Documentation, Release 4.0.1 • Security • Routing • Configuration • Django • Contributing • Signals • FAQ • API Reference Installation You can install configuration module is useful, in fact you’re discouraged from hard coding periodic task intervals and task routing options, as it’s much better to keep this in a centralized location, and especially for libraries add': 'low-priority', } 2.2. Getting Started 23 Celery Documentation, Release 4.0.1 Or instead of routing it you could rate limit the task instead, so that only 10 tasks of this type can be processed in