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High Performance Notification System Practices
- Building a high-performance notification system requires a unified system that can handle large volume message requests while ensuring system stability.
- The notification system consists of several layers, including the configuration layer, interface layer, core service layer, common component layer, and storage layer.
- The initial message sending design employs RPC service requests and MQ message consumption to handle message-sending requests, with idempotency designs implemented to prevent processing duplicate message content.
- For message-failing due to bottlenecks or errors, messages are retried via distributed task scheduling frameworks, utilizing lock control that prevents duplicate processing across nodes.
- Stability assurance of the notification system is done through two-layer degradation approaches that handle traffic spikes, resource isolation for problematic services, and third-party service protection.
- Fault tolerance for middleware is essential to ensure service continuity while a robust monitoring system should be established to detect and mitigate issues before they escalate.
- Active-active deployment across multiple data centers ensures service availability while elastic scaling, based on comprehensive service metrics, accommodates traffic variations while optimizing costs.
- System design must address service architecture, functionality, and stability assurance comprehensively be tailored to specific business needs through thoughtful planning and iteration.
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