root/trunk/server/ChangeLog @ 622

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12007-10-03 Paul Lindner <lindner@inuus.com>
2        * Incorporate "cas" operation developed by Dustin
3          Sallings <dustin@spy.net> This change allows you
4          to do atomic changes to an existing key.
5
6        * Fix for stats.evictions not incrementing
7          when exptime == 0 items are kicked off the cache.
8          from Jean-Francois BUSTARRET <jfbustarret@wat.tv>.
9
10        * Fix for do_item_cachedump() which was returning
11          an incorrect timestamp.
12       
13        * Switch to unsigned 64-bit increment/decrement counters
14          from Evan Miller and Dustin Sallings.
15
16        * Add append command support written by Filipe Laborde.
17          Tests/protocol doc updates by Paul Lindner.
18
192007-08-21 Paul Lindner <lindner@inuus.com>
20        * Incorporate incrememnt patch from Evan Miller
21          <emiller@imvu.com> to define increment overflow
22          behavior.
23
242007-08-07 Leon Brocard <acme@astray.com>
25        * Bring the memcached.1 manpage up to date
26
272007-08-06 Paul Lindner <lindner@inuus.com>
28        * Fix crash when using -P and -d flags on x86_64
29          with latest libevent release.
30
312007-07-08  Steven Grimm  <sgrimm@facebook.com>
32
33        * Item stats commands weren't thread-safe; wrap them with locks
34          when compiled in multithreaded mode.
35        * The "stats items" command now works again; it broke with the
36          introduction of the powers-of-N chunk size change.
37
382007-07-06 [Version 1.2.3 released]
39
402007-06-19  Paul Lindner  <lindner@mirth.inuus.com>
41
42        * Solaris portability fixes from Trond Norbye
43
442007-05-29  Paul Lindner  <lindner@mirth.inuus.com>
45
46        * Properly document evictions statistic value
47
482007-05-10  Paul Lindner  <lindner@inuus.com>
49
50        * Flesh out tests for unix domain sockets and binary data.
51        * Update rpm spec file to run tests
52
532007-05-07  Paul Lindner  <lindner@inuus.com>
54
55        * Fix compilation bug on freebsd 6.x (and maybe others)
56        * Update RPM spec file per redhat bugzilla #238994
57        * Move unistd.h to memcached.h to get rid of warnings
58        * Add string.h to thread.c to get correctly prototyped strerror()
59
602007-05-04  Paul Lindner  <lindner@inuus.com>
61
62        * Add fedora/redhat style init script and RPM spec file
63
642007-05-12 [Version 1.2.2 released]
65
662007-04-16  Steven Grimm  <sgrimm@facebook.com>
67
68        * Command tokenizer performance and cleanliness improvement.
69          Patch contributed by Paolo Borelli <paolo.borelli@gmail.com>.
70
712007-04-16  Paul Lindner  <lindner@inuus.com>
72
73        * Add notes to README about MacOS, libevent and kqueue.
74
75        * Windows Patch integration -- part 1, warnings elimination.
76
772007-04-12  Paul Lindner  <lindner@mirth.inuus.com>
78
79        * Allow changes to the verbosity level of the server with a new
80          "verbosity" command and some compiler cleanups.
81          Patch contributed by Paolo Borelli <paolo.borelli@gmail.com>.
82
832007-04-08  Paul Lindner  <lindner@inuus.com>
84
85        * Add cleanup patch from "Tim Yardley" <liquid@haveheart.com> to
86          clean up source spacing issues, fix -Wall warnings, add some
87          null checks, adds asserts at the top of each function for any
88          use of conn *c without checking to see if c is NULL first.
89
90        * Also adjust clean-whitespace.pl to clean *.ac files.  Add
91          script to test-suite to test for tabs.
92
932007-04-04  Paul Lindner  <lindner@inuus.com>
94
95        * Add clarification of flush_all in the protocol docs
96          from Elizabeth Mattijsen <liz@dijkmat.nl>
97
982007-03-31  Paul Lindner  <lindner@inuus.com>
99
100        * Add patch from Eli Bingham <eli@pandora.com> to
101          re-enable the -n switch to memcached.
102
1032007-03-20  Paul Lindner  <lindner@inuus.com>
104        * Add patch to collect eviction statistics from
105          Jean-Francois BUSTARRET <jfbustarret@wat.tv>.
106
107        * Updated docs, added new test cases for t/stats.t
108
1092007-03-18  Paul Lindner  <lindner@inuus.com>
110
111        * Add more test cases using larger buffer sizes up to and greater
112          than 1MB.
113
114        * Remove unused parameter to item_size_ok()
115
116        * Use a single printf() in usage()
117
118        * Add a failing test for conforming with maximum connections.
119
1202007-03-17
121        * crash fix from Thomas van Gulick <thomas@partyflock.nl> in
122          conn_shrink(), passing &ptr, instead of ptr to realloc().
123
1242007-03-05  Paul Lindner  <lindner@inuus.com>
125        * Fix a number of places where (s)printf calls were using unsigned
126          or signed formats that did not match their arguments.
127
128        * Add support for stdbool.h and stdint.h to use the bool and
129          uint8_t types.
130
131        * Major refactoring - move API calls for assoc/items/slabs to
132          their own individual header files.  Add apropriate const and
133          static declarations as appropriate.
134       
135        * Avoid type-punning.  Do a more efficient realloc inside the
136          conn_shrink routine.
137
138        * Fix overflow bug where uninitialized access to slabclass caused
139          size-0 mallocs during slab preallocation.
140
141        * Use EXIT_SUCCESS/EXIT_FAILURE constants.
142
143        * Convert some sprintf calls to snprintf to protect against
144          buffer overflows.
145
146        * Explicitly compare against NULL or zero in many places.
147
1482007-03-05
149        * Steven Grimm <sgrimm@facebook.com>: Per-object-type stats collection
150          support. Specify the object type delimiter with the -D command line
151          option. Turn stats gathering on and off with "stats detail on" and
152          "stats detail off". Dump the per-object-type details with
153          "stats detail dump".
154
1552007-03-01
156        * Steven Grimm <sgrimm@facebook.com>: Fix an off-by-one error in the
157          multithreaded version's message passing code.
158
1592006-12-23
160        * fix expirations of items set with absolute expiration times in
161          the past, before the server's start time.  bug was introduced in
162          1.2.0 with rel_time_t.  Thanks to Adam Dixon
163          <adamtdixon@gmail.com> for the bug report and test case!
164
1652006-11-26
166        * Steven Grimm <sgrimm@facebook.com>: Performance improvements:
167         
168          Dynamic sizing of hashtable to reduce collisions on very large
169          caches and conserve memory on small caches.
170
171          Only reposition items in the LRU queue once a minute, to reduce
172          overhead of accessing extremely frequently-used items.
173
174          Stop listening for new connections until an existing one closes
175          if we run out of available file descriptors.
176
177          Command parser refactoring: Add a single-pass tokenizer to cut
178          down on string scanning.  Split the command processing into
179          separate functions for easier profiling and better readability.
180          Pass key lengths along with the keys in all API functions that
181          need keys, to avoid needing to call strlen() repeatedly.
182
1832006-11-25
184        * Steve Peters <steve@fisharerojo.org>: OpenBSD has a malloc.h,
185        but warns to use stdlib.h instead
186
1872006-11-22
188        * Steven Grimm <sgrimm@facebook.com>: Add support for multithreaded
189          execution. Run configure with "--enable-threads" to enable. See
190          doc/threads.txt for details.
191
1922006-11-13
193        * Iain Wade <iwade@optusnet.com.au>: Fix for UDP responses on non-"get"
194         commands.
195
1962006-10-15
197        * Steven Grimm <sgrimm@facebook.com>: Dynamic sizing of hashtable to
198          reduce collisions on very large caches and conserve memory on
199          small caches.
200
2012006-10-13
202        * Steven Grimm <sgrimm@facebook.com>: New faster hash function.
203
2042006-09-20
205
206        * don't listen on UDP by default; more clear message when UDP port in use
207
2082006-09-09
209        * release 1.2.0 (along with 1.1.13, which is the more tested branch)
210
211        nobody has run 1.2.0 in production, to my knowledge.  facebook has run
212        their pre-merge-with-trunk version, but bugs were discovered (and fixed)
213        after the merge.  there might be more.  you've been warned.  :)
214
2152006-09-04
216        * improved autoconf libevent detection, from the Tor project.
217
2182006-09-03
219        * test suite and lot of expiration, delete, flush_all, etc corner
220          case bugs fixed (Brad Fitzpatrick)
221
2222006-09-02
223        * Nathan Neulinger <nneul@umr.edu>: fix breakage in expiration code
224          causing expiration times to not be processed correctly.
225
2262006-08-21
227        * Nathan Neulinger <nneul@umr.edu>: fix incompatabilities with
228          unix domain socket support and the UDP code and clean up stale
229          sockets
230
2312006-08-20
232        * Nathan Neulinger <nneul@umr.edu>: unix domain socket support
233
2342006-05-03
235        * Steven Grimm <sgrimm@facebook.com>:  big bunch of changes:
236          big CPU reduction work, UDP-based interface, increased memory
237          efficiency.  (intertwined patch, committed all together)
238          <http://lists.danga.com/pipermail/memcached/2006-May/002164.html>
239          or see svn commit logs
240
2412006-04-30
242        * River Tarnell:  autoconf work for Solaris 10.  Brad:
243        merge and verify it works on Nexenta.
244
2452006-03-04
246        * avva: bucket/generation patch (old, but Brad's just finally
247        committing it)
248
2492006-01-01
250        * Brad Fitzpatrick <brad@danga.com>:  allocate 1 slab per class
251        on start-up, to avoid confusing users with out-of-memory errors
252        later.  this is 18 MB of allocation on start, unless max memory
253        allowed with -m is lower, in which case only the smaller slab
254        classes are allocated.
255
2562005-08-09
257        * Elizabeth Mattijsen <liz@dijkmat.nl>: needed a way to flush all
258        memcached backend servers, but not at exactly the same time (to
259        reduce load peaks), I've added some simple functionality to the
260        memcached protocol in the "flush_all" command that allows you to
261        specify a time at which the flush will actually occur (instead of
262        always at the moment the "flush_all" command is received).
263
2642005-05-25
265        * patch from Peter van Dijk <peter@nextgear.nl> to make
266          stderr unbuffered, for running under daemontools
267
2682005-04-04
269        * patch from Don MacAskill <don@smugmug.com> 'flush_all' doesn't
270        seem to work properly.  Basically, if you try to add a key which
271        is present, but expired, the store fails but the old key is no
272        longer expired.
273
274        * release 1.1.12
275
2762005-01-14
277        * Date: Thu, 18 Nov 2004 15:25:59 -0600
278          From: David Phillips <electrum@gmail.com>
279        Here is a patch to configure.ac and Makefile.am to put the man page in
280        the correct location.  Trying to install the man page from a
281        subdirectory results in the subdirectory being used in the install
282        path (it tries to install to doc/memcached.1).  This is the correct
283        thing to  do:
284
285        - create a Makefile.am in the doc directory that installs the man page
286          with man_MANS
287        - modify Makefile.am in the base directory to reference the doc
288          directory using SUBDIRS
289        - modify the AC_CONFIG_FILES macro in configure.ac to output the
290          Makefile in doc
291
292       
2932005-01-14
294        * pidfile saving support from Lisa Seelye <lisa@gentoo.org>, sent
295          Jan 13, 2005
296
2972005-01-14
298        * don't delete libevent events that haven't been added (the deltimer)
299          patch from Ted Schundler <tschundler@gmail.com>
300
3012004-12-10
302        * document -M and -r in manpage (Doug Porter <dsp@dsp.name>)
303
3042004-07-22
305        * fix buffer overflow in items.c with 250 byte keys along with
306          other info on the same line going into a 256 byte char[].
307          thanks to Andrei Nigmatulin <anight@monamour.ru>
308       
3092004-06-15
310        * immediate deletes weren't being unlinked a few seconds,
311          preventing "add" commands to the same key in that time period.
312          thanks to Michael Alan Dorman <mdorman@debian.org> for the
313          bug report and demo script.
314       
3152004-04-30
316        * released 1.1.11
317
3182004-04-24
319        * Avva: Add a new command line option: -r , to maximize core file
320        limit.
321
3222004-03-31
323        * Avva: Use getrlimit and setrlimit to set limits for number of
324        simultaneously open file descriptors. Get the current limits and
325        try to raise them if they're not enough for the specified (or the
326        default) setting of max connections.
327       
3282004-02-24
329        * Adds a '-M' flag to turn off tossing items from the cache.
330          (Jason Titus <jtitus@postini.com>)
331
3322004-02-19 (Evan)
333        * Install manpage on "make install", etc.
334
3352003-12-30 (Brad)
336        * remove static build stuff.  interferes with PAM setuid stuff
337          and was only included as a possible fix with the old memory
338          allocator.  really shouldn't make a difference.
339        * add Jay Bonci's Debian scripts and manpage
340        * release version 1.1.10
341
3422003-12-01 (Avva)
343        * New command: flush_all, causes all existing items to
344          be invalidated immediately (without deleting them from
345          memory, merely causing memcached to no longer return them).
3462003-10-23
347        * Shift init code around to fix daemon mode on FreeBSD,
348        * and drop root only after creating the server socket (to
349        * allow the use of privileged ports)
350        * version 1.1.10pre
351
3522003-10-09
353        * BSD compile fixes from Ryan T. Dean
354        * version 1.1.9
355       
3562003-09-29
357        * ignore SIGPIPE at start instead of crashing in rare cases it
358          comes up.  no other code had to be modified, since everything
359          else is already dead-connection-aware.  (avva)
360       
3612003-09-09 (Avva, Lisa Marie Seelye <lisa@gentoo.org>)
362        * setuid support
363       
3642003-09-05 (Avva)
365        * accept all new connections in the same event (so we work with ET epoll)
366        * mark all items as clsid=0 after slab page reassignment to please future
367          asserts (on the road to making slab page reassignment work fully)
368
3692003-08-12 (Brad Fitzpatrick)
370        * use TCP_CORK on Linux or TCP_PUSH on BSD
371        * only use TCP_NODELAY when we don't have alternatives
372       
3732003-08-10
374        * disable Nagel's Algorithm (TCP_NODELAY) for better performance (avva)
375
3762003-08-10
377        * support multiple levels of verbosity (-vv)
378
3792003-08-10  (Evan Martin)
380        * Makefile.am: debug, optimization, and static flags are controlled
381          by the configure script.
382        * configure.ac:
383          - allow specifying libevent directory with --with-libevent=DIR
384          - check for malloc.h (unavailable on BSDs)
385          - check for socklen_t (unavailable on OSX)
386        * assoc.c, items.c, slabs.c:  Remove some unused headers.
387        * memcached.c:  allow for nonexistence of malloc.h; #define a POSIX
388          macro to import mlockall flags.
389
3902003-07-29
391        * version 1.1.7
392        * big bug fix: item exptime 0 meant expire immediately, not never
393        * version 1.1.8
394
3952003-07-22
396        * make 'delete' take second arg, of time to refuse new add/replace
397        * set/add/replace/delete can all take abs or delta time (delta can't
398          be larger than a month)
399
4002003-07-21
401        * added doc/protocol.txt
402
4032003-07-01
404        * report CPU usage in stats
405         
4062003-06-30
407        * version 1.1.6
408        * fix a number of obscure bugs
409        * more stats reporting
410       
4112003-06-10
412        * removing use of Judy; use a hash.  (judy caused memory fragmentation)
413        * shrink some structures
414        * security improvements
415        * version 1.1.0
416       
4172003-06-18
418        * changing maxsize back to an unsigned int
419       
4202003-06-16
421        * adding PHP support
422        * added CONTRIBUTORS file
423        * version 1.0.4
424       
4252003-06-15
426        * forgot to distribute website/api (still learning auto*)
427        * version 1.0.3
428       
4292003-06-15
430        * update to version 1.0.2
431        * autoconf/automake fixes for older versions
432        * make stats report version number
433        * change license from GPL to BSD
434       
435Fri, 13 Jun 2003 10:05:51 -0700  Evan Martin  <martine@danga.com>
436
437        * configure.ac, autogen.sh, Makefile.am:  Use autotools.
438        * items.c, memcached.c:  #include <time.h> for time(),
439          printf time_t as %lu (is this correct?),
440          minor warnings fixes.
441
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