Tweak and reword release notes

This commit is contained in:
Andoni Duarte Pintado 2025-02-07 20:41:12 +01:00
parent 5dbb9de071
commit 8a40344aa2
2 changed files with 25 additions and 25 deletions

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@ -33,8 +33,8 @@ Feature Changes
- Reduce memory sizes of common structures. ``008e5201098``
* Reduce `sizeof(isc_sockaddr_t)` from 152 to 48 bytes * Reduce
`sizeof(struct isc__nm_uvreq)` from 1560 to 560 bytes
* Reduce `sizeof(isc_sockaddr_t)` from 152 to 48 bytes
* Reduce `sizeof(struct isc__nm_uvreq)` from 1560 to 560 bytes
Partial backport of !8299 :gl:`!9953`

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@ -30,51 +30,51 @@ Removed Features
Bug Fixes
~~~~~~~~~
- Fix :iscman:`rndc flushname` for longer name server names.
- Fix :option:`rndc flushname` for longer name server names.
:option:`rndc flushname` did not work for name server names longer
than 16 bytes. This has been fixed. :gl:`#3885`
- Recently expired records could be returned with timestamp in future.
- Recently expired records could be returned with a timestamp in future.
Under rare circumstances, the RRSet that expired at the time of the
query could be returned with TTL far in the future. This has been
fixed.
Under rare circumstances, an RRSet that expired at the time of the
query could be returned with a TTL in the future. This has been fixed.
As a side-effect, the expiration time of expired RRSets are no longer
printed out in the cache dump. :gl:`#5094`
As a side effect, the expiration time of expired RRSets is no longer
returned in a cache dump. :gl:`#5094`
- Yaml string not terminated in negative response in delv.
- YAML string not terminated in negative response in delv.
:gl:`#5098`
- Apply the memory limit only to ADB database items.
The resolver under heavy-load could exhaust the memory available for
storing the information in the Address Database (ADB) effectively
evicting already stored information in the ADB. The memory used to
retrieve and provide information from the ADB is now not a subject of
the same memory limits that are applied for storing the information in
Under heavy load, a resolver could exhaust the memory available for
storing the information in the Address Database (ADB), effectively
discarding previously stored information in the ADB. The memory used to
retrieve and provide information from the ADB is no longer subject to
the same memory limits that are applied to
the Address Database. :gl:`#5127`
- Avoid unnecessary locking in the zone/cache database.
Prevent lock contention among many worker threads referring to the
same database node at the same time. This improves zone and cache
database performance for the heavily contended database nodes.
Lock contention among many worker threads referring to the
same database node at the same time is now prevented. This improves zone and
cache database performance for any heavily contended database nodes.
:gl:`#5130`
- Improve the resolver performance under attack.
A remote client can force the DNS resolver component to consume the
memory faster than cleaning up the resources for the canceled resolver
fetches due to `recursive-clients` limit. If the such traffic pattern
is sustained for a long period of time, the DNS server might
Previously, a remote client could force the DNS resolver component to consume
memory faster than resources were cleaned up for the canceled resolver
fetches, due to the `recursive-clients` limit. If such a traffic pattern
was sustained for a long period of time, the DNS server might
eventually run out of the available memory. This has been fixed.
It should be noted that when under such heavy attack for a BIND 9
version both with and without the fix, no outgoing DNS queries will be
successful as the generated traffic pattern will consume all the
It should be noted that, under such a heavy attack, no outgoing DNS queries will be successful in BIND 9
versions both with and without the fix, as the generated traffic pattern will consume all the
available slots for the recursive clients.