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git commit●fetch()●SELECT *●HTTP 200●localhost:3000●branch●flexbox●POST /api●INDEX●status 404●merge●JSON●git commit●fetch()●SELECT *●HTTP 200●localhost:3000●branch●flexbox●POST /api●INDEX●status 404●merge●JSON●

Celery

M1Why background tasksFree

The blocking problem
What is Celery?
Broker, worker & result backend

M2TasksLocked

Defining a task
delay vs apply_async
Getting results back

M3ReliabilityLocked

Retries & backoff
Idempotency
acks_late

M4ScalingLocked

Workers & concurrency
Queues & routing
Rate limits

M5WorkflowsLocked

Chains
Groups & chords
Scheduled tasks (Beat)

M6ProductionLocked

Monitoring with Flower
When to use Celery
Where to go next

Courses/Celery/Broker, worker & result backend

Why background tasks · Lesson 3 of 18

Broker, worker & result backend

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