dormando edited this page Feb 13, 2018 · 1 revision

Memcached 1.5.5 Release Notes

Date: 2018-2-12



General bugfix release. Potential rare deadlock fixed (introduced in 1.5.x series). Improvements to memory balancing when extstore is in use.


  • remove redundant counter/lock from hash table (2% boost for sets)
  • limit crawls for metadumper. avoids dumping too much data.
  • extstore: revise automove algorithm
  • quick fix for slab mover deadlock
  • extstore: fix segfault in 'extstore' admin command

New Features



The following people contributed to this release since 1.5.4.

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 1.5.4..1.5.5 or use a web view.

     6	dormando

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