https://www.memcp.org/index.php?action=history&feed=atom&title=Dashboard_MetricsDashboard Metrics - Revision history2026-08-29T08:21:52ZRevision history for this page on the wikiMediaWiki 1.39.1https://www.memcp.org/index.php?title=Dashboard_Metrics&diff=299&oldid=prevWikiservice: Refresh MemCP documentation: accuracy, operational guidance, performance profile and maintained API reference2026-08-28T09:59:18Z<p>Refresh MemCP documentation: accuracy, operational guidance, performance profile and maintained API reference</p>
<p><b>New page</b></p><div><!-- Copyright (C) 2026 Carl-Philip Haensch --><br />
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= Dashboard Metrics =<br />
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<!-- Generated from MemCP c42e19eba on 2026-08-27; do not edit manually. --><br />
<div class="mw-message-box mw-message-box-notice">Generated from MemCP commit <code>c42e19eba</code> on 27 August 2026. See [[Full SCM API documentation]].</div><br />
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The '''Dashboard Metrics''' module exposes process-local observations used by operational displays and diagnostics. Metrics cover CPU activity, active connections, recent connection peaks, and request rate.<br />
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Values describe the current MemCP process and recent in-memory sampling windows; they are not durable monitoring history and do not aggregate a multi-node cluster. Export or poll them through an external monitoring system when long-term retention and alerting are required.<br />
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== cpu_usage ==<br />
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Returns current CPU usage as a percentage (0-100)<br />
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'''Allowed number of parameters:''' 0–0<br />
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=== Parameters ===<br />
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''This function has no parameters.''<br />
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=== Returns ===<br />
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* '''value''' (<code>number</code>)<br />
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== active_connections ==<br />
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Returns the current number of active HTTP connections<br />
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'''Allowed number of parameters:''' 0–0<br />
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=== Parameters ===<br />
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''This function has no parameters.''<br />
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=== Returns ===<br />
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* '''value''' (<code>int</code>)<br />
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== max_connections ==<br />
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Returns the maximum number of HTTP connections over the last 10 minutes<br />
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'''Allowed number of parameters:''' 0–0<br />
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=== Parameters ===<br />
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''This function has no parameters.''<br />
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=== Returns ===<br />
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* '''value''' (<code>int</code>)<br />
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== requests_per_second ==<br />
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Returns the average number of HTTP requests per second over the last 10 seconds<br />
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'''Allowed number of parameters:''' 0–0<br />
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=== Parameters ===<br />
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''This function has no parameters.''<br />
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=== Returns ===<br />
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* '''value''' (<code>number</code>)<br />
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== newcachemap ==<br />
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Creates a new cachemap. Returns a threadsafe key-value function with LRU eviction under memory pressure: (cachemap key value) sets, (cachemap key) gets, (cachemap) lists keys, (cachemap &quot;get_or_compute&quot; key producer) computes one value for concurrent misses of the same key.<br />
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'''Allowed number of parameters:''' 0–0<br />
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=== Parameters ===<br />
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''This function has no parameters.''<br />
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=== Returns ===<br />
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* '''cachemap''' (<code>func</code>): thread-safe cache accessor<br />
** '''Parameters'''<br />
*** '''key_or_operation''' (<code>any</code>): cache key, or get_or_compute ''(optional)''<br />
*** '''value_or_key''' (<code>any</code>): value to store, or key for get_or_compute ''(optional)''<br />
*** '''producer''' (<code>func</code>): zero-argument value producer used by get_or_compute ''(optional)''<br />
**** '''Returns'''<br />
***** '''value''' (<code>any</code>)<br />
** '''Returns'''<br />
*** '''result''' (<code>any</code>): cached value, previous value, or key list depending on the operation</div>Wikiservice