| 摘要 |
A method for enhancing reliability while upgrading a software program implemented in a clustered computer system from a first version to a second version. The software program is implemented as software modules running on a plurality of computers coupled in a cluster configuration in a clustered computer system. The method includes ascertaining a certification level associated with each of the software modules. If a certification level of a given software module of the plurality of software modules has a first certification level, the method includes limiting a load level on the given software module to a first load level. If a certification level of a given software module of the plurality of software modules has a second certification level, the method includes allowing the load level on the second routing transaction requests to reach a second load level higher than the first load level.
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