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When a memcached key does not directly refer to the STA or DYN fork of a system element but – for example – to derived quantities, the format of its format name is free and can be arbitrary defined, provided that it is not already used.
Even though the name format is arbitrary, try to keep using 8 characters names and conventional extensions it is advisable to always use UPPERCASE and append an extension separated by a "_" (e.g. MYNEWVALMY-ARBITRARY-NAME_DAT). In any case, do not use the "_AUX" extension for a "free key".

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To avoid the proliferation of extensions, try using the ones listed in the table below:

auxiliary dataset (besides _STA and _DYN) associated to In this case it is strongly advisable that the name preceeding the _AUX extension is equal to the element name used with the _STA and _DYN extensions
ExtensionDescription
_BUF, _BUF JBUF*data Data buffers (FIFOs , circular buffers, etc...), not necessarily associated with a system element.
_INFO, _JINFO*Static metadata, not necessarily associated with a system element.
_DAT, _JDAT*generic data structures_AUXGeneric data structures, not necessarily associated with a system element.

(*) "J" prefix indicates that the key content is a Json document.

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