The combination of these four factors gives users quite a fair bit of flexibility in how they control the snap updates. By default, the last three revisions of the installed snap will be kept. Refresh.retain – Sets how many revisions of a snap are stored on the system.However, to conserve data, you can pause the refreshes on such networks. By default, snap refresh is enabled over metered connections. tered – Pauses refresh updates when the network connection is metered.In combination with the timer option, you can set very specific time windows for when the snaps are updated. The hold option allows you to postpone updates for up to 60 days. Refresh.hold – Delays the next refresh until the defined time and date.You can use this parameter to set when the snaps will refresh, so this does not conflict with your other activities – like work meetings, data backups, or similar. Refresh.timer – Defines the refresh frequency and schedule.The snap updates schedule is governed by four system-wide options. There are several ways the users can achieve that. However, there are cases when and where snap updates need to be deferred or postponed, or simply managed with a greater, more refined level of control. Typically, the refresh occurs four times a day, and in the vast majority of cases, they will complete seamlessly, without any issues. Snaps come with a built-in automatic update mechanism, whereby snaps are refreshed to a new version whenever there’s a new release in the Snap Store. In mission-critical environments, it is important to assert a high degree of oversight and precision over updates. Quite often, they bring improvements, vital security patches – and sometimes, unfortunately, bugs, too. Updates are an integral part of the software lifecycle.
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