Application specific tab - Memcache

[tzach]

Each virtual appliance we have its own GUI tab, available only if this appliance is running This list below is a subset of the full state command, which seems to be more useful

Information element

• curr_items - Current number of items stored: gauge chart
• total_items - Total number of items stored since server started: text
• bytes - Current number of bytes used store items: text
• curr_connections - Number of open connections: gauge chart
• total_connections - Total number of connections opened since server started running: text
• cmd_get - Cumulative number of retrieval reqs - derived chart
• cmd_set - Cumulative number of storage reqs - derived chart
• cmd_flush - Cumulative number of flush reqs - derived chart
• cmd_touch - Cumulative number of touch reqs - derived chart
• get_hits - Number of keys that have been requested found present - text
• get_misses - Number of items that have been requested not found - text
• delete_misses - Number of deletions reqs for missing keys - text
• delete_hits - Number of deletion reqs resulting in item being removed -text
• evictions - Number of valid items removed from cache free memory for new items - derived chart
• bytes_read - Total number of bytes read by this server network - derived chart
• bytes_written - Total number of bytes sent by this server network - derived chart

source: https://github.com/memcached/memcached/blob/master/doc/protocol.txt

[slivne]

@Tzach

Can you draw a mockup for the info - are you expecting a table or graph for each ? How is this compared to the newrelic info

[dzautner]

Is there an existing API for this?

[tzach]

I added some info on how to present each information elements. @dzautner there is not REST API for it yet, so nothing for you to do at this point. @slivne there are a few NewRelic memcached plugins (we can easily add one ourselves) Here is an example, with a similar subset https://github.com/MeetMe/newrelic-plugin-agent/blob/master/newrelic_plugin_agent/plugins/memcached.py

And an example with only 3 parameters: https://docs.newrelic.com/docs/apm/other-features/metrics/metric-types#MemCache