Optimal way to cache time of day description

What is the best method to cache the following? I am creating an intranet web application template that will display the message, e.g., Good Morning, Justin Satyr! near the top of my master page header. Obviously, I will have to determine whether to show Morning, Afternoon or Evening. For clarit开发者_C百科y, my code is below:

string partOfDay;
var hours = DateTime.Now.Hour;
if (hours > 16)
{
    partOfDay = "evening";
}
else if (hours > 11)
{
    partOfDay = "afternoon";
}
else
{
    partOfDay = "morning";
}

I do not want to re-determine this on each page load because that seems moderately redundant and because I have to poll a SQL server to retrieve the user's full name. What is the best way to cache this information? If I cache it for the length of the session, then if the user begins using the application at 11:00 AM and finishes at 3:00 PM, it will still say Good Morning.

Is the best thing to do simply re-determine the M/A/E word each page load and cache the person's full name for the session? Or is there a better way?

I would just keep the user name in the Session object, the rest honestly is not worth caching and checking if it is out of date etc., just re-run it on each page - provided you put the implementation into a common library /class so you keep your code DRY.

In my opinion there is absolutely no need to cache the part of day. User information can be made available in the Session.

If you are talking in ASP.NET MVC context, you can use System.Web.Helpers namespace, where you can find WebCache helper. Than you need to calculate minutes to time of day_time will be changed and call WebCache.Set method with paramters: value="your string", minutesToCache=calculated_value.

Old, I know, but I don't cache mine, due to the obvious reason that the users time may change during the session. I store their calculated time in my session (calculates based on their timezone), and then use this code at the top of all pages:

<strong>@string.Format("Good {0}, ", SessionManager.GetUserCurrentDate().Hour > 16 ? "Evening" : SessionManager.GetUserCurrentDate().Hour > 11 ? "Afternoon" : "Morning") + SessionManager.GetDisplayName())</strong>

Works well for me!