| 摘要 |
A computer system can be updated and/or reconfigured quickly by preparing a list of attributes of the system and computing a fingerprint based on the list. The fingerprint serves as a key to a database of precomputed upgrade plans. If a matching plan is found, it can be executed to update the computer system without performing a time-consuming dependency resolution operation. If no applicable precomputed plan is found, a plan must then be computed, but the computed plan may be saved in the database to speed up future system updates.
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