Dev Tools · 2h ago
vLLM PagedAttention KV Cache Corruption Causes Outage at 14,720 RPS
A production vLLM serving system experienced a KV cache corruption issue, causing an outage at peak 14,720 requests per second. The error originated from the PagedAttention module's KV store returning corrupted responses. The team is debugging the cache corruption to restore service.
Meridian48 take
This incident highlights the fragility of optimized inference systems like vLLM under high load, where cache management bugs can cascade into major outages.
vllmcache-corruption