dramatiq.messages.inprogress

Messages currently processing

Dimensions:None

Technical Annotations (39)

Configuration Parameters (8)

--threadsrecommended: Reduce from high values like 40; single thread (--threads=1) works reliably

Controls worker thread count; high values cause consumer thread starvation with CPU-intensive tasks

rabbitmq.heartbeat_timeoutrecommended: Increase from default

Allows longer intervals between heartbeat communication before connection closure

time_limitrecommended: 24 hours

allows actor to run for extended duration without timeout

heartbeat_timeoutrecommended: 300000

increased timeout in RedisBroker constructor to prevent premature worker death detection

dramatiq_queue_prefetchrecommended: 1

limits to one job per worker/process to prevent multiple duplicate executions

worker_threadsrecommended: 8

default per-process limit on concurrent message processing

queue_prefetch

Recommended value for work_queue maxsize to prevent unbounded growth

maxsize

Attribute for queue.PriorityQueue to limit work_queue size

Error Signatures (2)

pika.exceptions.ConnectionWrongStateError: BlockingConnection.add_callback_threadsafe() called on closed or closing connection.

exception

Failed to wait for all callbacks to complete. This can happen when the RabbitMQ server is suddenly restarted.log pattern

CLI Commands (5)

dramatiq config.dramatiq --threads 1 --processes 1 --log-file=dramatiq_log${VAR}.txtdiagnostic

dramatiq example --threads=40 --processes=1diagnostic

dramatiq example --threads=1 --processes=1remediation

redis-cli HGETALL "dramatiq:default.msgs"diagnostic

redis-cli SMEMBERS "dramatiq:__acks__.{worker_id}.{queue}"diagnostic

Technical References (24)

work queueconcepttime.sleepcomponentmessage prefetchingconceptworker threadconceptconsumer threadscomponentsys.setswitchintervalcomponentheartbeat intervalconceptdelayed queuecomponent__heartbeats__component__acks__componentdispatch.luacomponentRedisBrokercomponentAsyncIO middlewarecomponentevent loopconceptwork_queuecomponentbroker.consumecomponentworker.pyfile pathRedis brokercomponentAMQPprotocolredis_message_idconceptmessage_idconceptWorkerThreadcomponentdramatiq:default.msgscomponent*.DQcomponent

Related Insights (10)

Worker pool exhaustion from blocking retry delays prevents message processingcritical

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Concurrent actor execution overwhelms database and external serviceswarning

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Message prefetching causes worker starvation with concurrent taskswarning

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Message duplication from RabbitMQ connection closure under CPU-intensive loadcritical

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Messages re-queued despite valid heartbeat during idle waitwarning

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AsyncIO actors limited by worker thread count causing blockingwarning

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Worker memory exhaustion from unbounded work queue with large message backlogscritical

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Redis broker bypasses AMQP-style prefetch backpressurewarning

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High prefetch limit for delayed messages risks memory exhaustionwarning

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Delayed messages duplicated with same message_id but different redis_message_idscritical

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