backend-api-internal/rabbitmq.md

rabbitmqctl add_vhost app_notifications rabbitmqctl add_user backend-api-internal strongpassword rabbitmqctl set_user_tags backend-api-internal management rabbitmqctl set_permissions -p app_notifications backend-api-internal "." "." ".*" rabbitmqadmin declare exchange --vhost "app_notifications" --name "app_notifications" --type "topic" --durable "true" rabbitmqadmin declare queue --vhost "app_notifications" --name "notifications_retry" --durable "true" rabbitmqadmin declare queue --vhost "app_notifications" --name "notifications_dlq" --durable "true" rabbitmqadmin declare queue --vhost "app_notifications" --name "notifications" --durable "true" rabbitmqadmin declare binding --vhost "app_notifications" --source "app_notifications" --destination "notifications" --destination-type "queue" --routing-key "notify.#"

Retry policy: messages stay for 30s before going back to main queue

rabbitmqctl set_policy
--vhost app_notifications
retry_policy "^notifications_retry$"
'{"dead-letter-exchange":"app_notifications", "dead-letter-routing-key":"notify.retry", "message-ttl":30000}'
--apply-to queues

DLQ policy: permanent dead letter storage

rabbitmqctl set_policy
--vhost app_notifications
dlq_policy "^notifications$"
'{"dead-letter-exchange":"app_notifications", "dead-letter-routing-key":"notify.dlq"}'
--apply-to queues