ngx_slab_alloc() failed: no memory in cache keys zone "zone-xyz"

jakubp nginx-forum at
Thu May 8 21:54:56 UTC 2014

> It does so - if an allocation of a cache node fails, this will 
> trigger a forced expiration of a cache node, and then tries to 
> allocate a node again.  This is more an emergency mechanism 
> though (and not guaranteed to work, as another allocation may 
> fail, too), hence alerts are logged in such cases.

Thanks for the information. It indeed helps my use case. For now I'll
disable the meassges.


Posted at Nginx Forum:,237829,249945#msg-249945

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