Memcache

Commands

stats slabs
stats items
stats cachedump 1 0
get <value>

Memcached-Tools

sudo apt-get install libmemcached-tools

memcstat --servers=<ip>
memcdump --servers=<ip>
memccat --servers=<ip> keyname
memccp --servers=<ip> <localfile> # (file saved in key)
memcached-tool <ip>:<port> dump  # easiest way to dump all

LRU

There can be hidden items (LRU). Memcache has cold, warm & hot storage, depending on what is used most, this can lead to stats cachedump 1 0 not showing a key anymore (cachedump only looks only at cold). The command lru_crawler metadump all will show this. We can also force everything into cold storage using lru mode flat.

Monitor Changes

watch fetchers (freezes terminal, only outputs watch output)

Authentication

Often unauthenticated (performance reasons). SASL can protect in binary mode but can be dictionary attacked.