IMGPREF parameter
Imagine options
Summary
- Default value
- 1
- Parameter type
- User
- Where set
- User resettable
- Related products
- Imagine Transparency
- Introduced
- Model 204 V8.0
Description
This parameter affects processing of finds for Imagine Transparency requests.
When a Find request is sent to a Transparency broker, the broker will respond with a list zero or more records thaty satisfy the criteria. To process those records, a separate request might need to be sent to the broker to retrieve each record. But, usually, a Find is immediately followed by a For loop on the matching records, so it can be useful for the broker to "prefetch" some number of records that satisfy the Find criteria, reducing the latency and CPU overhead of processing the extra record retrieval request. The default value of 1 should be fine for most applications though, if many finds in an application match many records, and all records are usually scanned, one might improve performance with a larger IMGPREF. The main downside of a large IMGPREF might be that records that are never scanned (because of early exit from For loops) might be sent from the broker to Model 204.