https://github.com/memcached/memcached/wiki/ReleaseNotes1610

Memcached官网安全更新（2021-7-25）

Memcached 1.6.10 Release Notes
Date: 2021-7-25

Download
http://www.memcached.org/files/memcached-1.6.10.tar.gz

Overview
Meta protocol is no longer marked as EXPERIMENTAL. A breaking protocol change
should only happen in very extreme situations (security, major usage fault),
which we do not expect to happen. Any further changes to the meta protocol
will be the addition of new commands or flags to existing commands.
See doc/protocol.txt for a description of the meta protocol.
https://github.com/memcached/memcached/wiki/MetaCommands wiki page for
examples.
The XXH3 hash has been added to the list of hash table algorithms, but not
enabled by default. There is a measurable performance improvement for long
keys (> 20 characters), but overall the difference is small.
Release otherwise contains bugfixes.

Fixes

Fix minor severity heap buffer overflow reading --auth-file


stats_prefix.c: Check for NDEBUG before using total_written variable
Add settings stat for shutdown_command enabled
[docker] Add user and expose the memcached port
meta: remove EXPERIMENTAL mark + doc fixes
meta: response code OK -> HD
meta: fix metaset syntax
meta: repairs to mset command
hash: add XXH3 to list of hash algorithms.
fix arm64 crc32 on old glibc/gcc.
extstore: fix crash on 'stats extstore'
seccomp: extend allowed rules for extended usage
The total number of UDP datagrams required for the message is calculated incorrectly.
meta: allow base64'ed binary keys with 'b' flag
small improvements to readme
Added debugtime command for test suite


New Features
The meta protocol can now transmit binary encoded keys by encoding the key in
base64 and sending a 'b' flag with the command. If for example your key
composes of several large numerics (userids and so on), these can be encoded
directly as binary. This shortens the key which can save some memory on the
server. See doc/protocol.txt for more details.

Contributors
The following people contributed to this release since 1.6.9.
Note that this is based on who contributed changes, not how they were
done. In many cases, a code snippet on the mailing list or a bug
report ended up as a commit with your name on it.
Note that this is just a summary of how many changes each person made
which doesn't necessarily reflect how significant each change was.
For details on what led up into a branch, either grab the git repo and
look at the output of git log 1.6.9..1.6.10 or use a web view.

Repo list: https://github.com/memcached/memcached/wiki/DevelopmentRepos

Web View: http://github.com/memcached/memcached/commits/1.6.10


13 dormando
2 minkikim89
1 Brian Aker
1 Hervé Beraud
1 Kevin Lin
1 Khem Raj
1 LSmithx2
1 Levente Polyak
1 Tomas Korbar
1 Tyson Andre
1 tom

memcached是一套分布式的高速缓存系统，由LiveJournal的Brad Fitzpatrick开发，但目前被许多网站使用

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