Berkeley DB: Retrieving only keys -

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i retrieving range of keys in berkeley db database using cursor. using db_set_range flag followed number of gets using db_next flag.

everything works fine. problem need keys particular operation both keys , associated values. since values can pretty large (hundreds of kilobytes), avoid retrieving them. ideas?

interesting problem. dont believe possible keys alone.

one approach store keys in own database 0 data. if cant stand duplication, think best approach bulk read, since have definition locality of reference range of values. use db_multiple_key flag in dbc::get() call, , large dbt buffer data. use dbmultiplekeydataiterator iterate bulk retrieved block.

this should improve things consecutive leaf items in retrieval result in efficient page copies dbt temporary buffer use in dbc::get.


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