“The syslog Protocol”
https://datatracker.ietf.org/doc/html/rfc5424
- Obsoletes RFC3164
6.2.3. TIMESTAMP
The TIMESTAMP field is a formalized timestamp derived from RFC3339.
6.3.3. SD-PARAM
Each SD-PARAM consists of a name, referred to as PARAM-NAME, and a value, referred to as PARAM-VALUE. PARAM-NAME is case-sensitive
Appendix A.5. Case Convention for Names
Names are used at various places in this document, for example for SD-IDs and PARAM-NAMEs. This document uses "lower camel case" consistently. With that, each name begins with a lower case letter and each new embedded word starts with an upper case letter, with no hyphen or other delimiter. An example of this is "timeQuality".
While an implementation is free to use any other case convention for experimental names, it is suggested that the case convention outlined above is followed.