12009-03-11 2 3 * Protocol: Binary complete (Dustin, Trond, Toru, etc...) 4 5 * Performance: improvements from facebook (Dormando) 6 7 * Performance: per-thread stats (Trond) 8 9 * Performance: Hash expansion in its own thread (Trond) 10 11 * Stats: Lots of new stats (Dustin) 12 13 * Bug fixes (various) 14 15 See the 1.3.2 release notes or revision control for more detail. 16 172008-09-06 18 * Display error status on listen failures (Dormando) 19 20 * Remove managed instance code. Incomplete/etc. (Dormando) 21 22 * Handle broken IPV6 stacks better (Brian Aker) 23 24 * Generate warnings on setsockopt() failures (Brian Aker) 25 26 * Fix some indentation issues (Brian Aker) 27 28 * UDP/TCP can be disabled by setting their port to zero (Brian Aker) 29 30 * Zero out libevent thread structures before use (Ricky Zhou) 31 32 * New stat: Last accessed time for last evicted item per slab class. 33 (Dormando) 34 35 * Use a dedicated socket accept thread (Facebook) 36 37 * Add -R option. Limit the number of requests processed by a connection 38 at once. Prevents starving other threads if bulk loading. (Facebook) 39 402008-07-29 [Version 1.2.6 released] 41 422008-07-24 [Version 1.2.6-rc1 released] 43 44 * Add support for newer automake (Facebook) 45 46 * DTrace support for Solaris/etc (Trond Norbye) 47 48 * LRU tests (Steve Yen) 49 50 * Handle negative length items properly (Dormando) 51 52 * Don't leave stale data after failed set attempts (Dormando) 53 54 * Fix refcount leaks, which would result in OOM's on all sets 55 (Dormando) 56 57 * Fix buffer overruns (Dustin Sallings, Tomash Brechko) 58 59 * Fix memory corruption with CAS (Dustin Sallings) 60 612008-06-11 62 63 * Fix -k to work with -d. (reported by Gary Zhu) 64 652008-03-02 [Version 1.2.5-rc1 released] 66 67 * Add per-item-class tracking of evictions and OOM errors (dormando) 68 69 * Optimize item_alloc() a little (dormando) 70 71 * Give 'SERVER_ERROR out of memory' errors more context (dormando) 72 73 * Enable usage of large memory pages under solaris 74 ([email protected]) 75 76 * Enable UDP by default, clean up server socket code 77 ([email protected]) 78 79 * 'noreply' support (Tomash Brechko) 80 81 * IPv6 support, and IPv6 multi-interface support ([email protected]) 82 83 * Add compiler options for Sun Studio compilers with --enable-threads 84 ([email protected]) 85 86 * Add --enable-64bit for mulitarget platforms ([email protected]) 87 88 * Use gettimeofday(2) instead of time(2). 89 90 * Make -k option work (Tomash Brechko) 91 92 * Fix chunk slab alignment ([email protected]) 93 942007-12-06 [Version 1.2.4 released] 95 962007-12-05 97 98 * Fix compilation on panther (JS and Dormando) 99 100 * More CAS tests (Chris Goffinet) 101 102 * Final fixes for all 1.2.4 features are in, -rc2 sent out. 103 1042007-11-19 [Version 1.2.4-rc1 released] 105 1062007-11-19 Dormando <[email protected]> 107 108 * Patch series from Tomash Brechko <[email protected]>: 109 Minor fixes and optimisations. 110 111 * Patches from Chris, Dustin, and Dormando to fix CAS. 112 113 * Prepping for 1.2.4 release. 114 1152007-11-13 Dormando <[email protected]> 116 117 * Adjusted patch from js <[email protected]>: Compile on OS X Panther 118 and earlier. 119 1202007-11-12 Steven Grimm <[email protected]> 121 122 * Patch from Tomash Brechko <[email protected]>: Always send 123 "SERVER_ERROR out of memory" when memory exhausted. 124 1252007-10-15 Paul Lindner <[email protected]> 126 127 * Patch from David Bremner <[email protected]> that implements 128 a new option "-a" which takes an octal permission mask 129 (like chmod) sets the permissions on the unix domain socket 130 (specified by "-s"). 131 1322007-10-03 Paul Lindner <[email protected]> 133 * Incorporate "cas" operation developed by Dustin 134 Sallings <[email protected]> This change allows you 135 to do atomic changes to an existing key. 136 137 * Fix for stats.evictions not incrementing 138 when exptime == 0 items are kicked off the cache. 139 from Jean-Francois BUSTARRET <[email protected]>. 140 141 * Fix for do_item_cachedump() which was returning 142 an incorrect timestamp. 143 144 * Switch to unsigned 64-bit increment/decrement counters 145 from Evan Miller and Dustin Sallings. 146 147 * Add append command support written by Filipe Laborde. 148 Thread safe version plus prepend command from Maxim Dounin 149 <[email protected]> 150 151 * The memcached-tool script can now display stats. Patch 152 provided by Dan Christian <[email protected]> 153 154 * Fix for Unix Domain sockets on FreeBSD 155 FreeBSD's sendmsg() requires msg_name in msghdr structure 156 to be NULL if not used, setting msg_namelen to 0 isn't enough. 157 Patch from Maxim Dounin <[email protected]> 158 1592007-08-21 Paul Lindner <[email protected]> 160 * Incorporate incrememnt patch from Evan Miller 161 <[email protected]> to define increment overflow 162 behavior. 163 1642007-08-07 Leon Brocard <[email protected]> 165 * Bring the memcached.1 manpage up to date 166 1672007-08-06 Paul Lindner <[email protected]> 168 * Fix crash when using -P and -d flags on x86_64 169 with latest libevent release. 170 1712007-07-08 Steven Grimm <[email protected]> 172 173 * Item stats commands weren't thread-safe; wrap them with locks 174 when compiled in multithreaded mode. 175 * The "stats items" command now works again; it broke with the 176 introduction of the powers-of-N chunk size change. 177 1782007-07-06 [Version 1.2.3 released] 179 1802007-06-19 Paul Lindner <[email protected]> 181 182 * Solaris portability fixes from Trond Norbye 183 1842007-05-29 Paul Lindner <[email protected]> 185 186 * Properly document evictions statistic value 187 1882007-05-10 Paul Lindner <[email protected]> 189 190 * Flesh out tests for unix domain sockets and binary data. 191 * Update rpm spec file to run tests 192 1932007-05-07 Paul Lindner <[email protected]> 194 195 * Fix compilation bug on freebsd 6.x (and maybe others) 196 * Update RPM spec file per redhat bugzilla #238994 197 * Move unistd.h to memcached.h to get rid of warnings 198 * Add string.h to thread.c to get correctly prototyped strerror() 199 2002007-05-04 Paul Lindner <[email protected]> 201 202 * Add fedora/redhat style init script and RPM spec file 203 2042007-05-12 [Version 1.2.2 released] 205 2062007-04-16 Steven Grimm <[email protected]> 207 208 * Command tokenizer performance and cleanliness improvement. 209 Patch contributed by Paolo Borelli <[email protected]>. 210 2112007-04-16 Paul Lindner <[email protected]> 212 213 * Add notes to README about MacOS, libevent and kqueue. 214 215 * Windows Patch integration -- part 1, warnings elimination. 216 2172007-04-12 Paul Lindner <[email protected]> 218 219 * Allow changes to the verbosity level of the server with a new 220 "verbosity" command and some compiler cleanups. 221 Patch contributed by Paolo Borelli <[email protected]>. 222 2232007-04-08 Paul Lindner <[email protected]> 224 225 * Add cleanup patch from "Tim Yardley" <[email protected]> to 226 clean up source spacing issues, fix -Wall warnings, add some 227 null checks, adds asserts at the top of each function for any 228 use of conn *c without checking to see if c is NULL first. 229 230 * Also adjust clean-whitespace.pl to clean *.ac files. Add 231 script to test-suite to test for tabs. 232 2332007-04-04 Paul Lindner <[email protected]> 234 235 * Add clarification of flush_all in the protocol docs 236 from Elizabeth Mattijsen <[email protected]> 237 2382007-03-31 Paul Lindner <[email protected]> 239 240 * Add patch from Eli Bingham <[email protected]> to 241 re-enable the -n switch to memcached. 242 2432007-03-20 Paul Lindner <[email protected]> 244 * Add patch to collect eviction statistics from 245 Jean-Francois BUSTARRET <[email protected]>. 246 247 * Updated docs, added new test cases for t/stats.t 248 2492007-03-18 Paul Lindner <[email protected]> 250 251 * Add more test cases using larger buffer sizes up to and greater 252 than 1MB. 253 254 * Remove unused parameter to item_size_ok() 255 256 * Use a single printf() in usage() 257 258 * Add a failing test for conforming with maximum connections. 259 2602007-03-17 261 * crash fix from Thomas van Gulick <[email protected]> in 262 conn_shrink(), passing &ptr, instead of ptr to realloc(). 263 2642007-03-05 Paul Lindner <[email protected]> 265 * Fix a number of places where (s)printf calls were using unsigned 266 or signed formats that did not match their arguments. 267 268 * Add support for stdbool.h and stdint.h to use the bool and 269 uint8_t types. 270 271 * Major refactoring - move API calls for assoc/items/slabs to 272 their own individual header files. Add apropriate const and 273 static declarations as appropriate. 274 275 * Avoid type-punning. Do a more efficient realloc inside the 276 conn_shrink routine. 277 278 * Fix overflow bug where uninitialized access to slabclass caused 279 size-0 mallocs during slab preallocation. 280 281 * Use EXIT_SUCCESS/EXIT_FAILURE constants. 282 283 * Convert some sprintf calls to snprintf to protect against 284 buffer overflows. 285 286 * Explicitly compare against NULL or zero in many places. 287 2882007-03-05 289 * Steven Grimm <[email protected]>: Per-object-type stats collection 290 support. Specify the object type delimiter with the -D command line 291 option. Turn stats gathering on and off with "stats detail on" and 292 "stats detail off". Dump the per-object-type details with 293 "stats detail dump". 294 2952007-03-01 296 * Steven Grimm <[email protected]>: Fix an off-by-one error in the 297 multithreaded version's message passing code. 298 2992006-12-23 300 * fix expirations of items set with absolute expiration times in 301 the past, before the server's start time. bug was introduced in 302 1.2.0 with rel_time_t. Thanks to Adam Dixon 303 <[email protected]> for the bug report and test case! 304 3052006-11-26 306 * Steven Grimm <[email protected]>: Performance improvements: 307 308 Dynamic sizing of hashtable to reduce collisions on very large 309 caches and conserve memory on small caches. 310 311 Only reposition items in the LRU queue once a minute, to reduce 312 overhead of accessing extremely frequently-used items. 313 314 Stop listening for new connections until an existing one closes 315 if we run out of available file descriptors. 316 317 Command parser refactoring: Add a single-pass tokenizer to cut 318 down on string scanning. Split the command processing into 319 separate functions for easier profiling and better readability. 320 Pass key lengths along with the keys in all API functions that 321 need keys, to avoid needing to call strlen() repeatedly. 322 3232006-11-25 324 * Steve Peters <[email protected]>: OpenBSD has a malloc.h, 325 but warns to use stdlib.h instead 326 3272006-11-22 328 * Steven Grimm <[email protected]>: Add support for multithreaded 329 execution. Run configure with "--enable-threads" to enable. See 330 doc/threads.txt for details. 331 3322006-11-13 333 * Iain Wade <[email protected]>: Fix for UDP responses on non-"get" 334 commands. 335 3362006-10-15 337 * Steven Grimm <[email protected]>: Dynamic sizing of hashtable to 338 reduce collisions on very large caches and conserve memory on 339 small caches. 340 3412006-10-13 342 * Steven Grimm <[email protected]>: New faster hash function. 343 3442006-09-20 345 346 * don't listen on UDP by default; more clear message when UDP port in use 347 3482006-09-09 349 * release 1.2.0 (along with 1.1.13, which is the more tested branch) 350 351 nobody has run 1.2.0 in production, to my knowledge. facebook has run 352 their pre-merge-with-trunk version, but bugs were discovered (and fixed) 353 after the merge. there might be more. you've been warned. :) 354 3552006-09-04 356 * improved autoconf libevent detection, from the Tor project. 357 3582006-09-03 359 * test suite and lot of expiration, delete, flush_all, etc corner 360 case bugs fixed (Brad Fitzpatrick) 361 3622006-09-02 363 * Nathan Neulinger <[email protected]>: fix breakage in expiration code 364 causing expiration times to not be processed correctly. 365 3662006-08-21 367 * Nathan Neulinger <[email protected]>: fix incompatabilities with 368 unix domain socket support and the UDP code and clean up stale 369 sockets 370 3712006-08-20 372 * Nathan Neulinger <[email protected]>: unix domain socket support 373 3742006-05-03 375 * Steven Grimm <[email protected]>: big bunch of changes: 376 big CPU reduction work, UDP-based interface, increased memory 377 efficiency. (intertwined patch, committed all together) 378 <http://lists.danga.com/pipermail/memcached/2006-May/002164.html> 379 or see svn commit logs 380 3812006-04-30 382 * River Tarnell: autoconf work for Solaris 10. Brad: 383 merge and verify it works on Nexenta. 384 3852006-03-04 386 * avva: bucket/generation patch (old, but Brad's just finally 387 committing it) 388 3892006-01-01 390 * Brad Fitzpatrick <[email protected]>: allocate 1 slab per class 391 on start-up, to avoid confusing users with out-of-memory errors 392 later. this is 18 MB of allocation on start, unless max memory 393 allowed with -m is lower, in which case only the smaller slab 394 classes are allocated. 395 3962005-08-09 397 * Elizabeth Mattijsen <[email protected]>: needed a way to flush all 398 memcached backend servers, but not at exactly the same time (to 399 reduce load peaks), I've added some simple functionality to the 400 memcached protocol in the "flush_all" command that allows you to 401 specify a time at which the flush will actually occur (instead of 402 always at the moment the "flush_all" command is received). 403 4042005-05-25 405 * patch from Peter van Dijk <[email protected]> to make 406 stderr unbuffered, for running under daemontools 407 4082005-04-04 409 * patch from Don MacAskill <[email protected]> 'flush_all' doesn't 410 seem to work properly. Basically, if you try to add a key which 411 is present, but expired, the store fails but the old key is no 412 longer expired. 413 414 * release 1.1.12 415 4162005-01-14 417 * Date: Thu, 18 Nov 2004 15:25:59 -0600 418 From: David Phillips <[email protected]> 419 Here is a patch to configure.ac and Makefile.am to put the man page in 420 the correct location. Trying to install the man page from a 421 subdirectory results in the subdirectory being used in the install 422 path (it tries to install to doc/memcached.1). This is the correct 423 thing to do: 424 425 - create a Makefile.am in the doc directory that installs the man page 426 with man_MANS 427 - modify Makefile.am in the base directory to reference the doc 428 directory using SUBDIRS 429 - modify the AC_CONFIG_FILES macro in configure.ac to output the 430 Makefile in doc 431 432 4332005-01-14 434 * pidfile saving support from Lisa Seelye <[email protected]>, sent 435 Jan 13, 2005 436 4372005-01-14 438 * don't delete libevent events that haven't been added (the deltimer) 439 patch from Ted Schundler <[email protected]> 440 4412004-12-10 442 * document -M and -r in manpage (Doug Porter <[email protected]>) 443 4442004-07-22 445 * fix buffer overflow in items.c with 250 byte keys along with 446 other info on the same line going into a 256 byte char[]. 447 thanks to Andrei Nigmatulin <[email protected]> 448 4492004-06-15 450 * immediate deletes weren't being unlinked a few seconds, 451 preventing "add" commands to the same key in that time period. 452 thanks to Michael Alan Dorman <[email protected]> for the 453 bug report and demo script. 454 4552004-04-30 456 * released 1.1.11 457 4582004-04-24 459 * Avva: Add a new command line option: -r , to maximize core file 460 limit. 461 4622004-03-31 463 * Avva: Use getrlimit and setrlimit to set limits for number of 464 simultaneously open file descriptors. Get the current limits and 465 try to raise them if they're not enough for the specified (or the 466 default) setting of max connections. 467 4682004-02-24 469 * Adds a '-M' flag to turn off tossing items from the cache. 470 (Jason Titus <[email protected]>) 471 4722004-02-19 (Evan) 473 * Install manpage on "make install", etc. 474 4752003-12-30 (Brad) 476 * remove static build stuff. interferes with PAM setuid stuff 477 and was only included as a possible fix with the old memory 478 allocator. really shouldn't make a difference. 479 * add Jay Bonci's Debian scripts and manpage 480 * release version 1.1.10 481 4822003-12-01 (Avva) 483 * New command: flush_all, causes all existing items to 484 be invalidated immediately (without deleting them from 485 memory, merely causing memcached to no longer return them). 4862003-10-23 487 * Shift init code around to fix daemon mode on FreeBSD, 488 * and drop root only after creating the server socket (to 489 * allow the use of privileged ports) 490 * version 1.1.10pre 491 4922003-10-09 493 * BSD compile fixes from Ryan T. Dean 494 * version 1.1.9 495 4962003-09-29 497 * ignore SIGPIPE at start instead of crashing in rare cases it 498 comes up. no other code had to be modified, since everything 499 else is already dead-connection-aware. (avva) 500 5012003-09-09 (Avva, Lisa Marie Seelye <[email protected]>) 502 * setuid support 503 5042003-09-05 (Avva) 505 * accept all new connections in the same event (so we work with ET epoll) 506 * mark all items as clsid=0 after slab page reassignment to please future 507 asserts (on the road to making slab page reassignment work fully) 508 5092003-08-12 (Brad Fitzpatrick) 510 * use TCP_CORK on Linux or TCP_PUSH on BSD 511 * only use TCP_NODELAY when we don't have alternatives 512 5132003-08-10 514 * disable Nagel's Algorithm (TCP_NODELAY) for better performance (avva) 515 5162003-08-10 517 * support multiple levels of verbosity (-vv) 518 5192003-08-10 (Evan Martin) 520 * Makefile.am: debug, optimization, and static flags are controlled 521 by the configure script. 522 * configure.ac: 523 - allow specifying libevent directory with --with-libevent=DIR 524 - check for malloc.h (unavailable on BSDs) 525 - check for socklen_t (unavailable on OSX) 526 * assoc.c, items.c, slabs.c: Remove some unused headers. 527 * memcached.c: allow for nonexistence of malloc.h; #define a POSIX 528 macro to import mlockall flags. 529 5302003-07-29 531 * version 1.1.7 532 * big bug fix: item exptime 0 meant expire immediately, not never 533 * version 1.1.8 534 5352003-07-22 536 * make 'delete' take second arg, of time to refuse new add/replace 537 * set/add/replace/delete can all take abs or delta time (delta can't 538 be larger than a month) 539 5402003-07-21 541 * added doc/protocol.txt 542 5432003-07-01 544 * report CPU usage in stats 545 5462003-06-30 547 * version 1.1.6 548 * fix a number of obscure bugs 549 * more stats reporting 550 5512003-06-10 552 * removing use of Judy; use a hash. (judy caused memory fragmentation) 553 * shrink some structures 554 * security improvements 555 * version 1.1.0 556 5572003-06-18 558 * changing maxsize back to an unsigned int 559 5602003-06-16 561 * adding PHP support 562 * added CONTRIBUTORS file 563 * version 1.0.4 564 5652003-06-15 566 * forgot to distribute website/api (still learning auto*) 567 * version 1.0.3 568 5692003-06-15 570 * update to version 1.0.2 571 * autoconf/automake fixes for older versions 572 * make stats report version number 573 * change license from GPL to BSD 574 575Fri, 13 Jun 2003 10:05:51 -0700 Evan Martin <[email protected]> 576 577 * configure.ac, autogen.sh, Makefile.am: Use autotools. 578 * items.c, memcached.c: #include <time.h> for time(), 579 printf time_t as %lu (is this correct?), 580 minor warnings fixes. 581 582