Adjusting image caching
You can choose the amount of time that your GitHub Enterprise Server instance caches avatars. When you increase the cache time, you increase the amount of time a user's avatar will take to load. Configuring the cache time with too low a value can overload your GitHub Enterprise Server instance work processes.
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From an administrative account on GitHub Enterprise Server, in the upper-right corner of any page, click .
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If you're not already on the "Site admin" page, in the upper-left corner, click Site admin.
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In the " Site admin" sidebar, click Management Console.
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In the "Settings" sidebar, click Applications.
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Under "Avatar image cache time (seconds)", type the number of seconds that you would like your GitHub Enterprise Server instance to cache avatar images.
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Under the "Settings" sidebar, click Save settings.
Note: Saving settings in the Management Console restarts system services, which could result in user-visible downtime.
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Wait for the configuration run to complete.