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| author | Lukáš Ondráček <lukas.ondracek@nic.cz> | 2024-05-07 16:06:23 +0200 |
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| committer | Lukáš Ondráček <lukas.ondracek@nic.cz> | 2024-05-07 16:06:23 +0200 |
| commit | 3754493f83b41592578417f27483d4ce9c8295bd (patch) | |
| tree | d7698d6c92b2de34188e4034f191a5f746477a75 /modules/prefetch/README.rst | |
| parent | fixup! rrl: truncating answers when close to limit, dropping over limit (diff) | |
| parent | Merge remote-tracking branch 'origin/master' into 6.0 (diff) | |
| download | knot-resolver-3754493f83b41592578417f27483d4ce9c8295bd.tar.xz knot-resolver-3754493f83b41592578417f27483d4ce9c8295bd.zip | |
Merge remote-tracking branch 'origin/6.0' into rrl-wip
Diffstat (limited to 'modules/prefetch/README.rst')
| -rw-r--r-- | modules/prefetch/README.rst | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/modules/prefetch/README.rst b/modules/prefetch/README.rst new file mode 100644 index 00000000..4d5a5e3e --- /dev/null +++ b/modules/prefetch/README.rst @@ -0,0 +1,18 @@ +.. SPDX-License-Identifier: GPL-3.0-or-later + +.. _mod-prefetch: + +Expiring records +---------------- + +The ``prefetch`` module helps to keep the cache hot by prefetching expiring records. + +This mechanism is activated when the module is loaded and it is not configurable. + +.. code-block:: lua + + modules.load('prefetch') + + +Any time the resolver answers with records that are about to expire, they get refreshed. (see :c:func:`is_expiring`) +That improves latency for records which get frequently queried, relatively to their TTL. |