Deleting or replacing data files

While adding new data files is simple and straight-forward, special care must be taken when replacing existing data files which are actively used by the server. Instead of simply replacing such files, it is recommended to give the replacement file a new name (e.g. append a version suffix to the file name). After the new file has been taken live, the old version can be deleted.

In all cases, remember that the Platform Server cache and the client cache entries must become stale before the updated data is seen by the client. Specific cache entries can be updated immediately using the cache=validate command.

Changes to font files and ICC profile files are not tracked directly by the cache manager. If such a resource is modified without changing its id, the server cache will not know about the change, and cache=validate will not cause the cache entry to be updated. cache=update can be used to force regenerating such cache entries.

To avoid the complications of replacing files, it is recommended to give a replacement file a new name and update the corresponding catalog entries. This will allow replacing any data file while the server is live and cause server cache entries to become stale immediately with no additional intervention. This approach can be used for ICC profiles, fonts, and all images managed by image catalogs.

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