Whenever you store a value that has a unit in a variable, config option or CLI switch, include the unit in the name. So:
maxRequestSize
=>maxRequestSizeBytes
elapsedTime
=>elapsedSeconds
cacheSize
=>cacheSizeMB
chargingTime
=>chargingTimeHours
fileSizeLimit
=>fileSizeLimitGB
temperatureThreshold
=>temperatureThresholdCelsius
diskSpace
=>diskSpaceTerabytes
flightAltitude
=>flightAltitudeFeet
monitorRefreshRate
=>monitorRefreshRateHz
serverResponseTimeout
=>serverResponseTimeoutMs
connectionSpeed
=>connectionSpeedMbps
EDIT: I know it’s better to use types to represent units. Please don’t write yet another comment about it. You can find my response to that point here: https://programming.dev/comment/219329
Related: Making Wrong Code Look Wrong
TL;DR: there is good and bad Hungarian notation. Encoding types (like string or int) in variable names is bad. Encoding information that cannot be expressed in the type system is good. (Though with the development of type systems, more and more of those concepts can be moved into the types, keeping variable names clean.)
But as a Hungarian, I’m obviously a little biased :)