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Angelo Gladding
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canopy job queue

JobQueue spawns a pool of workers in a gevent.queue.PriorityQueue. JSON encoded job inputs are routed through a list at key jobqueue in the environment's Redis database (eg. KVDB=./path/to/redis.sock).

>>> # enqueues a job to fetch a resource at Alice's site root
>>> canopy.enqueue(canopy.get, "https://alice.example.org")
>>> # sets a schedule to enqueue the same job every three minutes
>>> canopy.enqueue(canopy.get, "https://alice.example.org",
...                _schedule="*/3 * * * *")

The idea is to have all outgoing tasks piped through this queue, no matter how trivial. Web responses should be instantaneous. Background tasks can be trivially restarted, reprioritized, canceled, etc.

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