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dormando edited this page Oct 16, 2023 · 1 revision

Memcached 1.6.22 Release Notes

Date: 2023-10-15

Download

http://www.memcached.org/files/memcached-1.6.22.tar.gz

Overview

Contains important security fixes for users of the proxy, please upgrade at your earliest convenience. This does not affect you unless you build with --enable-proxy and enable the proxy at start time.

Contains many fixes and optimizations foe the proxy subsystem, along with a few small fixes to various things.

Fixes

  • core: fix incr/decr/ma failing in some conditions
  • extstore: fix item loss during page defrag
  • Note that counts for track_sizes are best effort
  • core: fix build on BSD
  • core: speedup for async IO handling
  • core: don't ignore sighup in daemonize mode
  • proxy: add label to proxy backend error logs
  • proxy: if a ustat label is "", skip printing
  • proxy: fix ms ignoring T flag for mcp.internal
  • proxy: fix ms parsing error
  • proxy: fix backend cleanup when using worker IO
  • proxy: fix response code in the event of dead backend
  • proxy: fix race condition in first load
  • proxy: fix off-by-one if \r is missing
  • proxy: update backends if conncount changes
  • proxy: io submission queue opt
  • proxy: io return optimization
  • proxy: fix for dropping -O2 from lua compile
  • proxy: fix buffer overflow with multiget syntax
  • proxy: fix flaky test in t/proxylimits.t

New Features

  • proxy: backend antiflap detection.
  • proxy: mcp.backend({ down = true }) option
  • proxy: add mcp.ratelim_tbf({})
  • proxy: easier usage of N sockets per backend

See commit history for full notes. Also see the proxy documentation at: https://github.com/memcached/memcached/wiki/Proxy

Contributors

The following people contributed to this release since 1.6.21.

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 1.6.21..1.6.22 or use a web view.

    30	dormando
     3	Finn Frankis
     1	Fei Hu
     1	Nick Pillitteri
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