关于现代队列模式的开发人员指南

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1 Main Queue Configuration:
2 - Max retry attempts: 3
3 - Retry delay: Exponential backoff
4 - Failed message destination: DLQ
5 - Message metadata: Original queue, timestamp, error details
6
7 DLQ Handler:
8 - Alert on new messages
9 - Store failure context
10 - Provide retry mechanism
11 - Track failure patterns

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1 Queue Levels:
2 Critical (Priority 1):
3  - System alerts
4  - Emergency notifications
5  - Critical user operations
6  
7 High (Priority 2):
8  - User-facing operations
9  - Time-sensitive tasks
10  - Financial transactions
11  
12 Normal (Priority 3):
13  - Regular operations
14  - Background tasks
15  - Batch processing
16  
17 Low (Priority 4):
18  - Analytics
19  - Reporting
20  - Data archiving

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1 Message Structure:
2{
3  payload: <message content>,
4  processAfter: <timestamp>,
5  attempts: <retry count>,
6  backoffStrategy: <exponential/linear/custom>
7 }
8
9 Queue Management:
10 - Sorted by processing time
11 - Regular polling for due messages
12 - Efficient message retrieval
13 - Handle timezone considerations

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1 Publisher:
2 - Message validation
3- Routing logic
4 - Delivery guarantees
5
6 Exchange/Router:
7 - Message duplication
8 - Consumer management
9 - Routing rules
10
11 Consumers:
12 - Independent processing
13 - Error handling
14 - Scale independently

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1 Pool Management:
2 - Worker registration
3 - Health monitoring
4 - Load balancing
5 - Task distribution
6
7 Worker Configuration:
8 - Processing capacity
9 - Specialization
10 - Resource limits
11 - Retry behavior
12
13 Task Handling:
14- Priority support
15 - Progress tracking
16 - Result aggregation

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1 Message Processing:
2 1. Generate unique message ID
3 2. Check processing history
4 3. Apply idempotency key
5 4. Process message
6 5. Record completion
7 6. Handle duplicates

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1 Basic Exponential:
2 1st: 5 seconds
3 2nd: 25 seconds
4 3rd: 125 seconds
5 
6 Advanced Pattern:
7 - Initial delay: 1s
8 - Max delay: 1 hour
9 - Jitter: ±10%
10 - Max attempts: Business-specific
11 - Circuit breaker integration