What is the default Duration of asp.net MVC OutputCache attribute?

Question

We are using MVC outputcache attribute, as shown below

[OutputCache(Location = System.Web.UI.OutputCacheLocation.Server, Duration = 60 * 60 * 12, VaryByParam = "staticDataTypes;customerSubscriptionId")]

Here what is the default value of Duration?

The default value of duration is "0"

Yogi
– Yogi

2016-04-22 07:09:36 +00:00
Commented Apr 22, 2016 at 7:09 — Yogi
– Yogi, Commented Apr 22, 2016 at 7:09
So if Duration value is 0, its like we are not caching?

Sparrow
– Sparrow

2016-04-22 07:12:50 +00:00
Commented Apr 22, 2016 at 7:12 — Sparrow
– Sparrow, Commented Apr 22, 2016 at 7:12
yes, that it is. 0 means no caching.

Yogi
– Yogi

2016-04-22 07:15:01 +00:00
Commented Apr 22, 2016 at 7:15 — Yogi
– Yogi, Commented Apr 22, 2016 at 7:15

Yogi · Accepted Answer · 2016-04-22 08:23:03Z

3

The Duration property is initialized in System.Web.Configuration.OutputCacheProfile.cs, here's the relevant code:

_propDuration = new ConfigurationProperty("duration", typeof(int), -1, 
                                          ConfigurationPropertyOptions.None);

and

[ConfigurationProperty("duration", DefaultValue = -1)]
public int Duration {
    get { 
         return (int)base[_propDuration];
    } 
    set { 
        base[_propDuration] = value;
    } 
}

Which sets it to a default of -1 which is an invalid value. Documentation for the Duration property mentions: 'The Duration must be defined in either the profile or the directive of a page using the profile.'

So, there's actually no (valid) default value, you are required to specify it.

edited Apr 22, 2016 at 8:23

Yogi

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answered Apr 22, 2016 at 7:47

Ton Plooij

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