Guide86.3K views2,825 votes0 replies942 following
Memcached slab classes and the -f factor: design boundaries for predictable eviction
When memcached evicts items unexpectedly, the root cause is often an unexamined slab class size or -f factor. This article maps the memory layout, operational checks, and failure modes so you can size cache with confidence.
cache-evictionmemcached-slab-allocationperformance-diagnosticsTasadduq Burneyowner29.8K rep · 19 Aug 2026, 21:08 UTC