On Feb 8, 7:06 pm, "Ikai L (Google)" <[email protected]> wrote:
> The official docs are pending, but here's Nick Johnson to the rescue:
>
> http://blog.notdot.net/2010/02/New-features-in-1-3-1-prerelease-Cursors


What are the performance characteristics of cursors?

The serialised cursor shows that it stores an offset. Does that mean
that if the offset is one million, one million rows will have to be
skipped before the next 10 are returned? This will be faster than
doing it in your app, but not as quick as the existing bookmark
techniques which use the primary key index.

Or is the server-side stateful, like a typical SQL implementation of
cursors? In which case, are there any limits to the number of active
cursors? Or what if a cursor is resumed some time in the future; will
it work at all, or work slower?

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