Yonik Seeley wrote:
This strategy looks very promising.
One drawback is that documents must be added directly to the main
index for this to be efficient. This is a bit of a problem if there
is a document uniqueness requirement (a unique id field).
This is easy to do with a single index. Here's the loop:
1. Poll DB for updated and new documents.
2. Delete all updated docs from an IndexReader & close it.
3. Add all new & updated to an IndexWriter & close it.
4. Tell DB that documents are updated.
5. Checkpoint index.
6. Repeat.
Deleting is much faster than adding.
Doug
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