This blog discusses tips, tricks, and use cases for Teradata Viewpoint's "Rewind" feature. Hopefully this blog will give you some new ideas on more efficient navigation and different ways of utilizing rewind that you may have overlooked in the past.
If you have been using single clicks with the rewind feature navigation buttons (seconds, minutes, hours) to move back in time, then you are creating longer clickstreams than necessary! Here are some tips for faster time travel. For rapid progression on hours, minutes, or seconds one can drag and hold the slider over the appropriate navigation button (the arrow buttons) to simulate multiple clicks. For instance to traverse rewind back several hours, you could drag and hold as shown below:
Another somewhat hidden feature is the ability to navigate in increments. This is done by clicking between navigation buttons to step back in different increments. For instance, a single click between the seconds and minutes buttons, traverses back 10 seconds. Similarly a single click between minutes and hours will traverse in 10 minute increments while between the hours button and time display, single days. Hovering over these areas will display pop-up help to show what options are available. Some of those available options are shown below:
Lastly for navigation, you can always manually enter a specific date or time as well as just picking another day in the pop-up monthly calendar. Hopefully these navigation tips will help with utilizing the rewind feature more effectively.
Next let's look at some interesting use cases for the rewind feature that may have you think about it differently going forward. Viewpoint's rewind is certainly an awesome tool for debugging past events but it can be used as a filter or comparison analysis tool as discussed below. Some portlets in Viewpoint offer time filtering for durations like last hour or last day. What some don't realize is those don't have to only be the last hour or day from current time but can be any hour or any day based on the rewind setting.
For example, a customer wants to see the alerts triggered between the hour of midnight and 1:00AM earlier today. They bring up the Alert Viewer portlet which allows selections of "Last 1 Hour" or "Last 1 Day" maybe leading someone to think they have to bring up a full day's alerts to see that one hour increment of midnight to 1:00AM. A more efficient approach would be to open rewind and set it to 1:00AM and then select the "Last 1 Hour" option to view only those alerts in that hour. This is how one can use rewind as a filter for portlets as shown here.
Another use case for the rewind feature can be as a comparison tool enabled by the portlet rewind control pull down. Using this menu, one can compare present to past or multiple times in the past. Below is showing a comparison of past with present for queries that were running at the same time last week. The Query Monitor portlet on the right has been "unlinked" from rewind so is displaying the current time. Note the red slash through the rewind indicator. The Query Monitor portlet on the left shows the pull down to accomplish this.
Similarly, if you want to compare multiple times in the past, you would rewind to the first time and pause one of the portlet instances there and then continue to rewind to the other time for comparison. One portlet follows while the other one that is paused does not.
Hopefully this has provided some new insights into other use cases for Viewpoint "Rewind"!
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