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Cache preparation is a fully automated, background process that allows historical reports to be generated more quickly, rather than calculating the reports on demand. However, cache preparation may occasionally fail due to inconsistent data in older databases. You can review the cache status in report grids or from the Cache tab in the Administration: License Servers page to check that the cache preparation has been successful and, if needed, invalidate the cache to allow the report to be newly generated, as described below.
Reviewing cache status in report grids
The cache status is displayed on report grids that generate cache use cache data.
- An "in progress" status displays when data when data is being prepared for specific servers and is not yet ready for the requested time range. You can wait until the data preparation is complete or check its progress by going to the Cache tab on the License Servers page (described below) to see whether the cache preparation was successful.
- A "Data preparation failed" status occurs in cases where data inconsistency was detected during the cache preparation.
The historical reports for the server with the failed cache preparation will not display until the problem is fixed; please contact X-formation Support for assistance. In some cases, clearing the cache and re-creating it may resolve the problem. Administrators can perform cache invalidation from either the Cache tab or the Data Management page. If this does not resolve the problem, contact X-formation Support for assistance.X-Formation Support may instruct you to clear the cache to try to resolve the problem.
Reviewing cache status in the License Servers page
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- Green status: Cache up to date; reports using the server data and time range are available
- Blue status: Cache preparation in progress; reports temporarily unavailable
- Red status: Cache preparation failed (details are available by hovering over the status); reports that are generated using the cache will not be available until the problem is resolved
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Above the License Servers Cache Status grid, there is a Delete Cache button that allows you to clear the cache. For more details on deleting the cache in order to fix issues with cache preparation, see Cache invalidation.
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Clearing the cache should be done with caution. Clearing the reports cache is usually performed only when requested by X-Formation Support to help resolve inconsistencies in cached data. Although clearing the cache is in itself a quick process and no data will be lost, reports will be unavailable while the cache is re-created, which may take a few hours for larger databases. |
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