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Monitors the hit ratio, and returns an integer that specifies the cache hit ratio. The hit ratio is defined as the ratio between the number of times a record was found in a cache divided by the total number of times the cache was searched. The cache efficiency is determined by the hit ratio.
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Syntax
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DbCache (number,generation)
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Parameters:
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number: A number that represents the data source's sequence number in the Data repository.
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generation: A number that represents the task's hierarchic position in the runtime task tree. 0 represents the current task, 1 its immediate ancestor, and so on.
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Returns:
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The function will return an integer between 0-100 that specifies the hit ratio.
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Example:
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DbCache ('1' DSOURCE, 0) will return the hit ratio for the first data source defined in the Data repository in the current task. Note: The DSOURCE literal can be used.
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Exceptions:
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This function is not supported for Web Service databases.
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See also:
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The Online and Rich Client Samples projects (program SQ16 and RSQ16)
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