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key-value-storage.md

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Key-Value storage

Riak

Get stats

curl -H "Accept: text/plain" http://127.0.0.1:8098/stats

Riak pool maintenance

# Add the node to the cluster
riak-admin cluster join ${NODE}

# Create a plan to see how the new ring will be laid out
riak-admin cluster plan

# Commit the plan
riak-admin cluster commit

# Remove a node from the cluster
riak-admin cluster leave ${NODE}

Restarting a node

riak-admin transfers # ensure cluster is in good state
riak-admin member-status # get status of all cluster members

Ports

http://docs.basho.com/riak/kv/2.2.3/using/security/

desc port
epmd listener TCP:4369
handoffport listener TCP:8099
internode communication TCP:6000-7999
protocol buffers TCP:8087
HTTP TCP:8098

Links

memcached

Get a list of keys

Note - this is an undocumented interface in the C memcached server

# get slab info
stats items
# get dump of slab
stats cachedump SLAB LIMIT

Using ASCII protocol through telnet

telnet host 11211

Using Dalli

require 'dalli'
dc = Dalli::Client.new('localhost:11211')
dc.set('foo', 'bar')
dc.get('foo')

Resources

moxi

Redis

etcd

https://etcd.io/