2006-11-26
* Steven Grimm <sgrimm@facebook.com>: Performance improvements:
Dynamic sizing of hashtable to reduce collisions on very large
caches and conserve memory on small caches.
Only reposition items in the LRU queue once a minute, to reduce
overhead of accessing extremely frequently-used items.
Stop listening for new connections until an existing one closes
if we run out of available file descriptors.
Command parser refactoring: Add a single-pass tokenizer to cut
down on string scanning. Split the command processing into
separate functions for easier profiling and better readability.
Pass key lengths along with the keys in all API functions that
need keys, to avoid needing to call strlen() repeatedly.
2006-11-25
* Steve Peters <steve@fisharerojo.org>: OpenBSD has a malloc.h,
but warns to use stdlib.h instead
2006-11-13
* Iain Wade <iwade@optusnet.com.au>: Fix for UDP responses on non-"get"
commands.
2006-10-13
* Steven Grimm <sgrimm@facebook.com>: New faster hash function.
2006-09-20
* don't listen on UDP by default; more clear message when UDP port in use
2006-09-09
* release 1.2.0 (along with 1.1.13, which is the more tested branch)
nobody has run 1.2.0 in production, to my knowledge. facebook has run
their pre-merge-with-trunk version, but bugs were discovered (and fixed)
after the merge. there might be more. you've been warned. :)
2006-09-04
* improved autoconf libevent detection, from the Tor project.
2006-09-03
* test suite and lot of expiration, delete, flush_all, etc corner
case bugs fixed (Brad Fitzpatrick)
2006-09-02
* Nathan Neulinger <nneul@umr.edu>: fix breakage in expiration code
causing expiration times to not be processed correctly.
2006-08-21
* Nathan Neulinger <nneul@umr.edu>: fix incompatabilities with
unix domain socket support and the UDP code and clean up stale
sockets
2006-08-20
* Nathan Neulinger <nneul@umr.edu>: unix domain socket support
2006-05-03
* Steven Grimm <sgrimm@facebook.com>: big bunch of changes:
big CPU reduction work, UDP-based interface, increased memory
efficiency. (intertwined patch, committed all together)
<http://lists.danga.com/pipermail/memcached/2006-May/002164.html>
or see svn commit logs
2006-04-30
* River Tarnell: autoconf work for Solaris 10. Brad:
merge and verify it works on Nexenta.
2006-03-04
* avva: bucket/generation patch (old, but Brad's just finally
committing it)
2006-01-01
* Brad Fitzpatrick <brad@danga.com>: allocate 1 slab per class
on start-up, to avoid confusing users with out-of-memory errors
later. this is 18 MB of allocation on start, unless max memory
allowed with -m is lower, in which case only the smaller slab
classes are allocated.
2005-08-09
* Elizabeth Mattijsen <liz@dijkmat.nl>: needed a way to flush all
memcached backend servers, but not at exactly the same time (to
reduce load peaks), I've added some simple functionality to the
memcached protocol in the "flush_all" command that allows you to
specify a time at which the flush will actually occur (instead of
always at the moment the "flush_all" command is received).
2005-05-25
* patch from Peter van Dijk <peter@nextgear.nl> to make
stderr unbuffered, for running under daemontools
2005-04-04
* patch from Don MacAskill <don@smugmug.com> 'flush_all' doesn't
seem to work properly. Basically, if you try to add a key which
is present, but expired, the store fails but the old key is no
longer expired.
* release 1.1.12
2005-01-14
* Date: Thu, 18 Nov 2004 15:25:59 -0600
From: David Phillips <electrum@gmail.com>
Here is a patch to configure.ac and Makefile.am to put the man page in
the correct location. Trying to install the man page from a
subdirectory results in the subdirectory being used in the install
path (it tries to install to doc/memcached.1). This is the correct
thing to do:
- create a Makefile.am in the doc directory that installs the man page
with man_MANS
- modify Makefile.am in the base directory to reference the doc
directory using SUBDIRS
- modify the AC_CONFIG_FILES macro in configure.ac to output the
Makefile in doc
2005-01-14
* pidfile saving support from Lisa Seelye <lisa@gentoo.org>, sent
Jan 13, 2005
2005-01-14
* don't delete libevent events that haven't been added (the deltimer)
patch from Ted Schundler <tschundler@gmail.com>
2004-12-10
* document -M and -r in manpage (Doug Porter <dsp@dsp.name>)
2004-07-22
* fix buffer overflow in items.c with 250 byte keys along with
other info on the same line going into a 256 byte char[].
thanks to Andrei Nigmatulin <anight@monamour.ru>
2004-06-15
* immediate deletes weren't being unlinked a few seconds,
preventing "add" commands to the same key in that time period.
thanks to Michael Alan Dorman <mdorman@debian.org> for the
bug report and demo script.
2004-04-30
* released 1.1.11
2004-04-24
* Avva: Add a new command line option: -r , to maximize core file
limit.
2004-03-31
* Avva: Use getrlimit and setrlimit to set limits for number of
simultaneously open file descriptors. Get the current limits and
try to raise them if they're not enough for the specified (or the
default) setting of max connections.
2004-02-24
* Adds a '-M' flag to turn off tossing items from the cache.
(Jason Titus <jtitus@postini.com>)
2004-02-19 (Evan)
* Install manpage on "make install", etc.
2003-12-30 (Brad)
* remove static build stuff. interferes with PAM setuid stuff
and was only included as a possible fix with the old memory
allocator. really shouldn't make a difference.
* add Jay Bonci's Debian scripts and manpage
* release version 1.1.10
2003-12-01 (Avva)
* New command: flush_all, causes all existing items to
be invalidated immediately (without deleting them from
memory, merely causing memcached to no longer return them).
2003-10-23
* Shift init code around to fix daemon mode on FreeBSD,
* and drop root only after creating the server socket (to
* allow the use of privileged ports)
* version 1.1.10pre
2003-10-09
* BSD compile fixes from Ryan T. Dean
* version 1.1.9
2003-09-29
* ignore SIGPIPE at start instead of crashing in rare cases it
comes up. no other code had to be modified, since everything
else is already dead-connection-aware. (avva)
2003-09-09 (Avva, Lisa Marie Seelye <lisa@gentoo.org>)
* setuid support
2003-09-05 (Avva)
* accept all new connections in the same event (so we work with ET epoll)
* mark all items as clsid=0 after slab page reassignment to please future
asserts (on the road to making slab page reassignment work fully)
2003-08-12 (Brad Fitzpatrick)
* use TCP_CORK on Linux or TCP_PUSH on BSD
* only use TCP_NODELAY when we don't have alternatives
2003-08-10
* disable Nagel's Algorithm (TCP_NODELAY) for better performance (avva)
2003-08-10
* support multiple levels of verbosity (-vv)
2003-08-10 (Evan Martin)
* Makefile.am: debug, optimization, and static flags are controlled
by the configure script.
* configure.ac:
- allow specifying libevent directory with --with-libevent=DIR
- check for malloc.h (unavailable on BSDs)
- check for socklen_t (unavailable on OSX)
* assoc.c, items.c, slabs.c: Remove some unused headers.
* memcached.c: allow for nonexistence of malloc.h; #define a POSIX
macro to import mlockall flags.
2003-07-29
* version 1.1.7
* big bug fix: item exptime 0 meant expire immediately, not never
* version 1.1.8
2003-07-22
* make 'delete' take second arg, of time to refuse new add/replace
* set/add/replace/delete can all take abs or delta time (delta can't
be larger than a month)
2003-07-21
* added doc/protocol.txt
2003-07-01
* report CPU usage in stats
2003-06-30
* version 1.1.6
* fix a number of obscure bugs
* more stats reporting
2003-06-10
* removing use of Judy; use a hash. (judy caused memory fragmentation)
* shrink some structures
* security improvements
* version 1.1.0
2003-06-18
* changing maxsize back to an unsigned int
2003-06-16
* adding PHP support
* added CONTRIBUTORS file
* version 1.0.4
2003-06-15
* forgot to distribute website/api (still learning auto*)
* version 1.0.3
2003-06-15
* update to version 1.0.2
* autoconf/automake fixes for older versions
* make stats report version number
* change license from GPL to BSD
Fri, 13 Jun 2003 10:05:51 -0700 Evan Martin <martine@danga.com>
* configure.ac, autogen.sh, Makefile.am: Use autotools.
* items.c, memcached.c: #include <time.h> for time(),
printf time_t as %lu (is this correct?),
minor warnings fixes.
