High-volume spike causes delayed processing and missed event windows

High-volume traffic spikes from mobile clients result in delayed stream processing, causing missed event windows and incorrect time-based aggregations.

Implement rate limiting or request throttling at ingestion layer. Configure auto-scaling for stream consumers based on lag metrics. Increase consumer parallelism or partition count. Monitor processing lag and consumer group lag. Add alerting when processing delay exceeds window duration. Consider buffering or batching strategies.