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