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MemcachedMemcached
Memcached

Memcached

Distributed caching system used to speed up dynamic database-driven websites.

Extension
Free trial
Monitor each memcached instance individually with all of their key metrics by activating the extension on your environment. The extension's metrics are added automatically to the process screen.Easily glance over your memcached monitored environment and navigate to them by using the overview dashboard included in the extension.
  • Product information
  • Release notes

Overview

Dynatrace Memcached server monitoring provides insights into your distributed memory-object caching system so that you can pinpoint server performance issues and identify potential bottlenecks.

Get started

Pre-requisites

  • Dynatrace OneAgent version 1.265+
  • Memcached Server 1.4.24+

Dynatrace supports TCP, UDP, and socket connections to Memcached servers. Admin permissions are required for socket connection types 666 or higher.

Start using the Memcached extension by clicking on Add to environment and creating a configuration. No parameters are needed for the configuration, just activate it and you're ready to go. We recommend enabling the extension only on the hosts where memcached is actually running.

Compatibility information

  • Dynatrace OneAgent version 1.265+
  • Memcached Server 1.4.24+
  • Dynatrace supports TCP UDP and socket connections to Memcached servers. Admin permissions are required for socket connection types 666 or higher.
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By Dynatrace
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Extension content

Content typeNumber of items included
metric query
1
screen injections
1
metric metadata
20
screen chart groups
1
dashboards
1

Feature sets

Below is a complete list of the feature sets provided in this version. To ensure a good fit for your needs, individual feature sets can be activated and deactivated by your administrator during configuration.

Feature setsNumber of metrics included
Metric nameMetric keyDescriptionUnit
Read throughputmemcached.bytes_read.count-Byte
Write throughputmemcached.bytes_written.count-Byte
Metric nameMetric keyDescriptionUnit
Memory max bytesmemcached.limit_maxbytes-Byte
Memory bytesmemcached.bytes-Byte
Memory evictionsmemcached.evictions.count-Count
Malloc failsmemcached.malloc_fails.count-Count
Memory reclaimsmemcached.reclaimed.count-Count
Metric nameMetric keyDescriptionUnit
Get commandsmemcached.cmd_get.count-Count
Set commandsmemcached.cmd_set.count-Count
Get hitsmemcached.get_hits.count-Count
Get missesmemcached.get_misses.count-Count
Metric nameMetric keyDescriptionUnit
Threadsmemcached.threads-Count
Metric nameMetric keyDescriptionUnit
Uptimememcached.uptime-Second
Metric nameMetric keyDescriptionUnit
Connectionsmemcached.curr_connections-Count
Rejected connectionsmemcached.rejected_connections.count-Count
Metric nameMetric keyDescriptionUnit
Log worker droppedmemcached.log_worker_dropped.count-Count
Log worker writtenmemcached.log_worker_written.count-Count
Log watcher skippedmemcached.log_watcher_skipped.count-Count
Log watcher sentmemcached.log_watcher_sent.count-Count
Customer story Fife Council, Scotland
“Dynatrace shines a torch into the dark corners of an application, so we can see right down into the code and query level. It gives you the evidence you need to be sure of root causes, so we’ve been able to work much more easily with our service providers to resolve issues and get things back on track.”
Scott Mckenzie
Technical Specialist
Fife Council, Scotland logo

Full version history

To have more information on how to install the downloaded package, please follow the instructions on this page.
ReleaseDate

Full version history

  • Fixed a bug where the extension would stop execution early based on missing metadata

Full version history

  • Fixed a bug where installations of Dynatrace with custom paths would break the extension

Full version history

Converted from EF1 to EF2:

  • Added new metrics:
    • memcached.rejected_connections.count
    • memcached.malloc_fails.count
    • memcached.evictions.count
    • memcached.reclaimed.count
    • memcached.threads
    • memcached.uptime
    • memcached.log_worker_dropped.count
    • memcached.log_worker_written.count
    • memcached.log_watcher_skipped.count
    • memcached.log_watcher_sent.count
  • Added feature sets
  • Added overview dashboard
  • Added injection charts into the process group instance's unified analysis screen
  • The following metrics no longer report their values in per second rates, but rather in per minute:
    • memcached.cmd_get.count
    • memcached.cmd_set.count
    • memcached.get_hits.count
    • memcached.get_misses.count
    • memcached.bytes_read.count
    • memcached.bytes_written.count
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