SSL performance optimization with cache

justin nginx-forum at
Fri Dec 14 06:45:34 UTC 2012

Browsing my nginx error log noticed the following logged A LOT:

2012/12/13 21:37:18 [crit] 7968#0: ngx_slab_alloc() failed: no memory in SSL
session shared cache "SSL_CACHE"

If the cache fills, does it flush older entries for new entries? Basically,
how does the SSL cache work exactly?


Posted at Nginx Forum:,233990,233999#msg-233999

More information about the nginx mailing list