PYSEC-2026-3434 zae-limiter: DynamoDB hot partition throttling enables per-entity Denial of Service

Summary All rate limit buckets for a single entity share the same DynamoDB partition key namespace/ENTITYid. A high-traffic entity can exceed DynamoDB's per-partition throughput limits 1,000 WCU/sec, causing throttling that degrades service for that entity — and potentially co-located entities in...