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Fixing recommendations #1582

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Fixing recommendations #1582

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16 changes: 2 additions & 14 deletions source/reference/read-preference.txt
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Expand Up @@ -164,9 +164,9 @@ Minimize Latency
~~~~~~~~~~~~~~~~

To always read from a low-latency node, use :readmode:`nearest`. The
driver or :program:`mongos` will read from the fastest member and
driver or :program:`mongos` will read from the nearest member and
those no more than 15 milliseconds [#secondary-acceptable-latency]_
further away than the fastest member.
further away than the nearest member.

:readmode:`nearest` does *not* guarantee consistency. If the nearest
member to your application server is a secondary with some replication
Expand Down Expand Up @@ -198,18 +198,6 @@ from nearby members with the following read preference:
Although :readmode:`nearest` already favors members with low network latency,
including the tag makes the choice more predictable.

Maximize throughput
~~~~~~~~~~~~~~~~~~~

If disk I/O is the limiting fact for throughput, scale
reads capacity using :readmode:`nearest` and by setting the nearest
threshold [#nearest-threshold]_ very high. This will distribute the
query load equally among all members.

.. [#nearest-threshold] See :setting:`localThreshold` for
:program:`mongos` or your driver documentation for the appropriate
*secondaryAcceptableLatencyMS* setting.

Reduce load on the primary
~~~~~~~~~~~~~~~~~~~~~~~~~~

Expand Down