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1 2016-08-23
2 * ChangeLog moved from Google Code to Github Wiki, it's now available at:
3 https://github.com/memcached/memcached/wiki/ReleaseNotes
4
5 2010-10-11
6 * ChangeLog is no longer being updated.
7 See http://code.google.com/p/memcached/wiki/ReleaseNotes
8
9 2009-04-10
10
11 * *critical bugfix*. In 1.2.7 under multithreaded mode, memcached
12 would never restart accepting connections after hitting the
13 maximum connection limit.
14
15 2009-04-02
16
17 * Fix: Rewrote stat buffer handling (Trond)
18
19 2009-03-31
20
21 * Feature: -b option for configuring backlog
22
23 * Feature: stats settings
24
25 * Fix: binary stat alignment bug (bug26)
26
27 * Fix: buffer overflow in stats (bug27)
28
29 * Fix: recycle memory more aggressively (bug14)
30
31 * Fix: incr validation (bug31)
32
33 * Fix: 64-bit incr/decr delta problem (bug21)
34
35 * Fix: Ascii UDP set (bug36)
36
37 * Fix: stats slabs' used chunks (bug29)
38
39 * Fix: stats reset resetting more (bug22)
40
41 * Misc: More tests, documentation, cleanliness (godliness)
42
43 * Stable merge (stats, debuggability, listen bugs)
44
45 2009-03-11
46
47 * Protocol: Binary complete (Dustin, Trond, Toru, etc...)
48
49 * Performance: improvements from facebook (Dormando)
50
51 * Performance: per-thread stats (Trond)
52
53 * Performance: Hash expansion in its own thread (Trond)
54
55 * Stats: Lots of new stats (Dustin)
56
57 * Bug fixes (various)
58
59 See the 1.3.2 release notes or revision control for more detail.
60
61 2008-09-06
62 * Display error status on listen failures (Dormando)
63
64 * Remove managed instance code. Incomplete/etc. (Dormando)
65
66 * Handle broken IPV6 stacks better (Brian Aker)
67
68 * Generate warnings on setsockopt() failures (Brian Aker)
69
70 * Fix some indentation issues (Brian Aker)
71
72 * UDP/TCP can be disabled by setting their port to zero (Brian Aker)
73
74 * Zero out libevent thread structures before use (Ricky Zhou)
75
76 * New stat: Last accessed time for last evicted item per slab class.
77 (Dormando)
78
79 * Use a dedicated socket accept thread (Facebook)
80
81 * Add -R option. Limit the number of requests processed by a connection
82 at once. Prevents starving other threads if bulk loading. (Facebook)
83
84 2008-07-29 [Version 1.2.6 released]
85
86 2008-07-24 [Version 1.2.6-rc1 released]
87
88 * Add support for newer automake (Facebook)
89
90 * DTrace support for Solaris/etc (Trond Norbye)
91
92 * LRU tests (Steve Yen)
93
94 * Handle negative length items properly (Dormando)
95
96 * Don't leave stale data after failed set attempts (Dormando)
97
98 * Fix refcount leaks, which would result in OOM's on all sets
99 (Dormando)
100
101 * Fix buffer overruns (Dustin Sallings, Tomash Brechko)
102
103 * Fix memory corruption with CAS (Dustin Sallings)
104
105 2008-06-11
106
107 * Fix -k to work with -d. (reported by Gary Zhu)
108
109 2008-03-02 [Version 1.2.5-rc1 released]
110
111 * Add per-item-class tracking of evictions and OOM errors (dormando)
112
113 * Optimize item_alloc() a little (dormando)
114
115 * Give 'SERVER_ERROR out of memory' errors more context (dormando)
116
117 * Enable usage of large memory pages under solaris
118 (Trond.Norbye@Sun.COM)
119
120 * Enable UDP by default, clean up server socket code
121 (brian@tangent.org)
122
123 * 'noreply' support (Tomash Brechko)
124
125 * IPv6 support, and IPv6 multi-interface support (brian@tangent.org)
126
127 * Add compiler options for Sun Studio compilers with --enable-threads
128 (Trond.Norbye@Sun.COM)
129
130 * Add --enable-64bit for mulitarget platforms (Trond.Norbye@Sun.COM)
131
132 * Use gettimeofday(2) instead of time(2).
133
134 * Make -k option work (Tomash Brechko)
135
136 * Fix chunk slab alignment (Trond.Norbye@Sun.COM)
137
138 2007-12-06 [Version 1.2.4 released]
139
140 2007-12-05
141
142 * Fix compilation on panther (JS and Dormando)
143
144 * More CAS tests (Chris Goffinet)
145
146 * Final fixes for all 1.2.4 features are in, -rc2 sent out.
147
148 2007-11-19 [Version 1.2.4-rc1 released]
149
150 2007-11-19 Dormando <dormando@rydia.net>
151
152 * Patch series from Tomash Brechko <tomash.brechko@gmail.com>:
153 Minor fixes and optimizations.
154
155 * Patches from Chris, Dustin, and Dormando to fix CAS.
156
157 * Prepping for 1.2.4 release.
158
159 2007-11-13 Dormando <dormando@rydia.net>
160
161 * Adjusted patch from js <ebgssth@gmail.com>: Compile on OS X Panther
162 and earlier.
163
164 2007-11-12 Steven Grimm <sgrimm@facebook.com>
165
166 * Patch from Tomash Brechko <tomash.brechko@gmail.com>: Always send
167 "SERVER_ERROR out of memory" when memory exhausted.
168
169 2007-10-15 Paul Lindner <lindner@inuus.com>
170
171 * Patch from David Bremner <bremner@unb.ca> that implements
172 a new option "-a" which takes an octal permission mask
173 (like chmod) sets the permissions on the unix domain socket
174 (specified by "-s").
175
176 2007-10-03 Paul Lindner <lindner@inuus.com>
177 * Incorporate "cas" operation developed by Dustin
178 Sallings <dustin@spy.net> This change allows you
179 to do atomic changes to an existing key.
180
181 * Fix for stats.evictions not incrementing
182 when exptime == 0 items are kicked off the cache.
183 from Jean-Francois BUSTARRET <jfbustarret@wat.tv>.
184
185 * Fix for do_item_cachedump() which was returning
186 an incorrect timestamp.
187
188 * Switch to unsigned 64-bit increment/decrement counters
189 from Evan Miller and Dustin Sallings.
190
191 * Add append command support written by Filipe Laborde.
192 Thread safe version plus prepend command from Maxim Dounin
193 <mdounin@mdounin.ru>
194
195 * The memcached-tool script can now display stats. Patch
196 provided by Dan Christian <dchristian@google.com>
197
198 * Fix for Unix Domain sockets on FreeBSD
199 FreeBSD's sendmsg() requires msg_name in msghdr structure
200 to be NULL if not used, setting msg_namelen to 0 isn't enough.
201 Patch from Maxim Dounin <mdounin@mdounin.ru>
202
203 2007-08-21 Paul Lindner <lindner@inuus.com>
204 * Incorporate increment patch from Evan Miller
205 <emiller@imvu.com> to define increment overflow
206 behavior.
207
208 2007-08-07 Leon Brocard <acme@astray.com>
209 * Bring the memcached.1 manpage up to date
210
211 2007-08-06 Paul Lindner <lindner@inuus.com>
212 * Fix crash when using -P and -d flags on x86_64
213 with latest libevent release.
214
215 2007-07-08 Steven Grimm <sgrimm@facebook.com>
216
217 * Item stats commands weren't thread-safe; wrap them with locks
218 when compiled in multithreaded mode.
219 * The "stats items" command now works again; it broke with the
220 introduction of the powers-of-N chunk size change.
221
222 2007-07-06 [Version 1.2.3 released]
223
224 2007-06-19 Paul Lindner <lindner@mirth.inuus.com>
225
226 * Solaris portability fixes from Trond Norbye
227
228 2007-05-29 Paul Lindner <lindner@mirth.inuus.com>
229
230 * Properly document evictions statistic value
231
232 2007-05-10 Paul Lindner <lindner@inuus.com>
233
234 * Flesh out tests for unix domain sockets and binary data.
235 * Update rpm spec file to run tests
236
237 2007-05-07 Paul Lindner <lindner@inuus.com>
238
239 * Fix compilation bug on freebsd 6.x (and maybe others)
240 * Update RPM spec file per redhat bugzilla #238994
241 * Move unistd.h to memcached.h to get rid of warnings
242 * Add string.h to thread.c to get correctly prototyped strerror()
243
244 2007-05-04 Paul Lindner <lindner@inuus.com>
245
246 * Add fedora/redhat style init script and RPM spec file
247
248 2007-05-12 [Version 1.2.2 released]
249
250 2007-04-16 Steven Grimm <sgrimm@facebook.com>
251
252 * Command tokenizer performance and cleanliness improvement.
253 Patch contributed by Paolo Borelli <paolo.borelli@gmail.com>.
254
255 2007-04-16 Paul Lindner <lindner@inuus.com>
256
257 * Add notes to README about MacOS, libevent and kqueue.
258
259 * Windows Patch integration -- part 1, warnings elimination.
260
261 2007-04-12 Paul Lindner <lindner@mirth.inuus.com>
262
263 * Allow changes to the verbosity level of the server with a new
264 "verbosity" command and some compiler cleanups.
265 Patch contributed by Paolo Borelli <paolo.borelli@gmail.com>.
266
267 2007-04-08 Paul Lindner <lindner@inuus.com>
268
269 * Add cleanup patch from "Tim Yardley" <liquid@haveheart.com> to
270 clean up source spacing issues, fix -Wall warnings, add some
271 null checks, adds asserts at the top of each function for any
272 use of conn *c without checking to see if c is NULL first.
273
274 * Also adjust clean-whitespace.pl to clean *.ac files. Add
275 script to test-suite to test for tabs.
276
277 2007-04-04 Paul Lindner <lindner@inuus.com>
278
279 * Add clarification of flush_all in the protocol docs
280 from Elizabeth Mattijsen <liz@dijkmat.nl>
281
282 2007-03-31 Paul Lindner <lindner@inuus.com>
283
284 * Add patch from Eli Bingham <eli@pandora.com> to
285 re-enable the -n switch to memcached.
286
287 2007-03-20 Paul Lindner <lindner@inuus.com>
288 * Add patch to collect eviction statistics from
289 Jean-Francois BUSTARRET <jfbustarret@wat.tv>.
290
291 * Updated docs, added new test cases for t/stats.t
292
293 2007-03-18 Paul Lindner <lindner@inuus.com>
294
295 * Add more test cases using larger buffer sizes up to and greater
296 than 1MB.
297
298 * Remove unused parameter to item_size_ok()
299
300 * Use a single printf() in usage()
301
302 * Add a failing test for conforming with maximum connections.
303
304 2007-03-17
305 * crash fix from Thomas van Gulick <thomas@partyflock.nl> in
306 conn_shrink(), passing &ptr, instead of ptr to realloc().
307
308 2007-03-05 Paul Lindner <lindner@inuus.com>
309 * Fix a number of places where (s)printf calls were using unsigned
310 or signed formats that did not match their arguments.
311
312 * Add support for stdbool.h and stdint.h to use the bool and
313 uint8_t types.
314
315 * Major refactoring - move API calls for assoc/items/slabs to
316 their own individual header files. Add appropriate const and
317 static declarations as appropriate.
318
319 * Avoid type-punning. Do a more efficient realloc inside the
320 conn_shrink routine.
321
322 * Fix overflow bug where uninitialized access to slabclass caused
323 size-0 mallocs during slab preallocation.
324
325 * Use EXIT_SUCCESS/EXIT_FAILURE constants.
326
327 * Convert some sprintf calls to snprintf to protect against
328 buffer overflows.
329
330 * Explicitly compare against NULL or zero in many places.
331
332 2007-03-05
333 * Steven Grimm <sgrimm@facebook.com>: Per-object-type stats collection
334 support. Specify the object type delimiter with the -D command line
335 option. Turn stats gathering on and off with "stats detail on" and
336 "stats detail off". Dump the per-object-type details with
337 "stats detail dump".
338
339 2007-03-01
340 * Steven Grimm <sgrimm@facebook.com>: Fix an off-by-one error in the
341 multithreaded version's message passing code.
342
343 2006-12-23
344 * fix expirations of items set with absolute expiration times in
345 the past, before the server's start time. bug was introduced in
346 1.2.0 with rel_time_t. Thanks to Adam Dixon
347 <adamtdixon@gmail.com> for the bug report and test case!
348
349 2006-11-26
350 * Steven Grimm <sgrimm@facebook.com>: Performance improvements:
351
352 Dynamic sizing of hashtable to reduce collisions on very large
353 caches and conserve memory on small caches.
354
355 Only reposition items in the LRU queue once a minute, to reduce
356 overhead of accessing extremely frequently-used items.
357
358 Stop listening for new connections until an existing one closes
359 if we run out of available file descriptors.
360
361 Command parser refactoring: Add a single-pass tokenizer to cut
362 down on string scanning. Split the command processing into
363 separate functions for easier profiling and better readability.
364 Pass key lengths along with the keys in all API functions that
365 need keys, to avoid needing to call strlen() repeatedly.
366
367 2006-11-25
368 * Steve Peters <steve@fisharerojo.org>: OpenBSD has a malloc.h,
369 but warns to use stdlib.h instead
370
371 2006-11-22
372 * Steven Grimm <sgrimm@facebook.com>: Add support for multithreaded
373 execution. Run configure with "--enable-threads" to enable. See
374 doc/threads.txt for details.
375
376 2006-11-13
377 * Iain Wade <iwade@optusnet.com.au>: Fix for UDP responses on non-"get"
378 commands.
379
380 2006-10-15
381 * Steven Grimm <sgrimm@facebook.com>: Dynamic sizing of hashtable to
382 reduce collisions on very large caches and conserve memory on
383 small caches.
384
385 2006-10-13
386 * Steven Grimm <sgrimm@facebook.com>: New faster hash function.
387
388 2006-09-20
389
390 * don't listen on UDP by default; more clear message when UDP port in use
391
392 2006-09-09
393 * release 1.2.0 (along with 1.1.13, which is the more tested branch)
394
395 nobody has run 1.2.0 in production, to my knowledge. facebook has run
396 their pre-merge-with-trunk version, but bugs were discovered (and fixed)
397 after the merge. there might be more. you've been warned. :)
398
399 2006-09-04
400 * improved autoconf libevent detection, from the Tor project.
401
402 2006-09-03
403 * test suite and lot of expiration, delete, flush_all, etc corner
404 case bugs fixed (Brad Fitzpatrick)
405
406 2006-09-02
407 * Nathan Neulinger <nneul@umr.edu>: fix breakage in expiration code
408 causing expiration times to not be processed correctly.
409
410 2006-08-21
411 * Nathan Neulinger <nneul@umr.edu>: fix incompatibilities with
412 unix domain socket support and the UDP code and clean up stale
413 sockets
414
415 2006-08-20
416 * Nathan Neulinger <nneul@umr.edu>: unix domain socket support
417
418 2006-05-03
419 * Steven Grimm <sgrimm@facebook.com>: big bunch of changes:
420 big CPU reduction work, UDP-based interface, increased memory
421 efficiency. (intertwined patch, committed all together)
422 <https://lists.danga.com/pipermail/memcached/2006-May/002164.html>
423 or see svn commit logs
424
425 2006-04-30
426 * River Tarnell: autoconf work for Solaris 10. Brad:
427 merge and verify it works on Nexenta.
428
429 2006-03-04
430 * avva: bucket/generation patch (old, but Brad's just finally
431 committing it)
432
433 2006-01-01
434 * Brad Fitzpatrick <brad@danga.com>: allocate 1 slab per class
435 on start-up, to avoid confusing users with out-of-memory errors
436 later. this is 18 MB of allocation on start, unless max memory
437 allowed with -m is lower, in which case only the smaller slab
438 classes are allocated.
439
440 2005-08-09
441 * Elizabeth Mattijsen <liz@dijkmat.nl>: needed a way to flush all
442 memcached backend servers, but not at exactly the same time (to
443 reduce load peaks), I've added some simple functionality to the
444 memcached protocol in the "flush_all" command that allows you to
445 specify a time at which the flush will actually occur (instead of
446 always at the moment the "flush_all" command is received).
447
448 2005-05-25
449 * patch from Peter van Dijk <peter@nextgear.nl> to make
450 stderr unbuffered, for running under daemontools
451
452 2005-04-04
453 * patch from Don MacAskill <don@smugmug.com> 'flush_all' doesn't
454 seem to work properly. Basically, if you try to add a key which
455 is present, but expired, the store fails but the old key is no
456 longer expired.
457
458 * release 1.1.12
459
460 2005-01-14
461 * Date: Thu, 18 Nov 2004 15:25:59 -0600
462 From: David Phillips <electrum@gmail.com>
463 Here is a patch to configure.ac and Makefile.am to put the man page in
464 the correct location. Trying to install the man page from a
465 subdirectory results in the subdirectory being used in the install
466 path (it tries to install to doc/memcached.1). This is the correct
467 thing to do:
468
469 - create a Makefile.am in the doc directory that installs the man page
470 with man_MANS
471 - modify Makefile.am in the base directory to reference the doc
472 directory using SUBDIRS
473 - modify the AC_CONFIG_FILES macro in configure.ac to output the
474 Makefile in doc
475
476
477 2005-01-14
478 * pidfile saving support from Lisa Seelye <lisa@gentoo.org>, sent
479 Jan 13, 2005
480
481 2005-01-14
482 * don't delete libevent events that haven't been added (the deltimer)
483 patch from Ted Schundler <tschundler@gmail.com>
484
485 2004-12-10
486 * document -M and -r in manpage (Doug Porter <dsp@dsp.name>)
487
488 2004-07-22
489 * fix buffer overflow in items.c with 250 byte keys along with
490 other info on the same line going into a 256 byte char[].
491 thanks to Andrei Nigmatulin <anight@monamour.ru>
492
493 2004-06-15
494 * immediate deletes weren't being unlinked a few seconds,
495 preventing "add" commands to the same key in that time period.
496 thanks to Michael Alan Dorman <mdorman@debian.org> for the
497 bug report and demo script.
498
499 2004-04-30
500 * released 1.1.11
501
502 2004-04-24
503 * Avva: Add a new command line option: -r , to maximize core file
504 limit.
505
506 2004-03-31
507 * Avva: Use getrlimit and setrlimit to set limits for number of
508 simultaneously open file descriptors. Get the current limits and
509 try to raise them if they're not enough for the specified (or the
510 default) setting of max connections.
511
512 2004-02-24
513 * Adds a '-M' flag to turn off tossing items from the cache.
514 (Jason Titus <jtitus@postini.com>)
515
516 2004-02-19 (Evan)
517 * Install manpage on "make install", etc.
518
519 2003-12-30 (Brad)
520 * remove static build stuff. interferes with PAM setuid stuff
521 and was only included as a possible fix with the old memory
522 allocator. really shouldn't make a difference.
523 * add Jay Bonci's Debian scripts and manpage
524 * release version 1.1.10
525
526 2003-12-01 (Avva)
527 * New command: flush_all, causes all existing items to
528 be invalidated immediately (without deleting them from
529 memory, merely causing memcached to no longer return them).
530 2003-10-23
531 * Shift init code around to fix daemon mode on FreeBSD,
532 * and drop root only after creating the server socket (to
533 * allow the use of privileged ports)
534 * version 1.1.10pre
535
536 2003-10-09
537 * BSD compile fixes from Ryan T. Dean
538 * version 1.1.9
539
540 2003-09-29
541 * ignore SIGPIPE at start instead of crashing in rare cases it
542 comes up. no other code had to be modified, since everything
543 else is already dead-connection-aware. (avva)
544
545 2003-09-09 (Avva, Lisa Marie Seelye <lisa@gentoo.org>)
546 * setuid support
547
548 2003-09-05 (Avva)
549 * accept all new connections in the same event (so we work with ET epoll)
550 * mark all items as clsid=0 after slab page reassignment to please future
551 asserts (on the road to making slab page reassignment work fully)
552
553 2003-08-12 (Brad Fitzpatrick)
554 * use TCP_CORK on Linux or TCP_PUSH on BSD
555 * only use TCP_NODELAY when we don't have alternatives
556
557 2003-08-10
558 * disable Nagel's Algorithm (TCP_NODELAY) for better performance (avva)
559
560 2003-08-10
561 * support multiple levels of verbosity (-vv)
562
563 2003-08-10 (Evan Martin)
564 * Makefile.am: debug, optimization, and static flags are controlled
565 by the configure script.
566 * configure.ac:
567 - allow specifying libevent directory with --with-libevent=DIR
568 - check for malloc.h (unavailable on BSDs)
569 - check for socklen_t (unavailable on OSX)
570 * assoc.c, items.c, slabs.c: Remove some unused headers.
571 * memcached.c: allow for nonexistence of malloc.h; #define a POSIX
572 macro to import mlockall flags.
573
574 2003-07-29
575 * version 1.1.7
576 * big bug fix: item exptime 0 meant expire immediately, not never
577 * version 1.1.8
578
579 2003-07-22
580 * make 'delete' take second arg, of time to refuse new add/replace
581 * set/add/replace/delete can all take abs or delta time (delta can't
582 be larger than a month)
583
584 2003-07-21
585 * added doc/protocol.txt
586
587 2003-07-01
588 * report CPU usage in stats
589
590 2003-06-30
591 * version 1.1.6
592 * fix a number of obscure bugs
593 * more stats reporting
594
595 2003-06-10
596 * removing use of Judy; use a hash. (judy caused memory fragmentation)
597 * shrink some structures
598 * security improvements
599 * version 1.1.0
600
601 2003-06-18
602 * changing maxsize back to an unsigned int
603
604 2003-06-16
605 * adding PHP support
606 * added CONTRIBUTORS file
607 * version 1.0.4
608
609 2003-06-15
610 * forgot to distribute website/api (still learning auto*)
611 * version 1.0.3
612
613 2003-06-15
614 * update to version 1.0.2
615 * autoconf/automake fixes for older versions
616 * make stats report version number
617 * change license from GPL to BSD
618
619 Fri, 13 Jun 2003 10:05:51 -0700 Evan Martin <martine@danga.com>
620
621 * configure.ac, autogen.sh, Makefile.am: Use autotools.
622 * items.c, memcached.c: #include <time.h> for time(),
623 printf time_t as %lu (is this correct?),
624 minor warnings fixes.
625