ChangeLog v0.x
v 0.53
released 2011-09-27
- Fix for FreeBSD/OpenBSD and -lm 
- Added memcached_exist() 
- Fix for memory when using config test. 
- CLI gained --quiet 
v 0.52
released 2011-09-12
- Build fixes for Ubuntu/Suse. 
- Fixes for OSX Lion. 
- Bug fix for looping back through dns lookups under certain failures. 
- Fixes related to dead server failures. 
v 0.51
released 2011-07-21
- memcached_callback_set() now takes its data argument as const 
- Update to tests. 
- Fix in parser for port number. 
v 0.50
released 2011-06-20
- Updates to C++ interface 
- Custom free allocators need to now check for value before calling free. 
- memcached_fetch_result() now uses the internal result when available (about 25 to 50% faster). 
- Fix for stats structure. 
- Updates to documentation. 
- memcached_fetch_result() now uses the internal result when available (about 25 to 50% faster). 
v 0.49
released 2011-04-14
- Fix calls to auto methods so that if value is not passed in nothing bad happens. 
- New parser calls for generating memcached_st objects. 
- New error system. 
- New flow control for messages means faster get/set calls. 
- Added new documentation system. 
- A behavior change has been now made that if you specify a weight for any server, we enable the weight flag and do weight balancing. 
- Added MEMCACHED_BEHAVIOR_REMOVE_FAILED_SERVERS to simplify the setting of AUTO REJECT for servers. 
v 0.48
released 2011-03-16
- Fix memory leak in server parse. 
- Move test framework out to be its own library (easier to work with Gearman). 
v 0.47
released 2011-02-24
- Additional fixes for OpenBSD. 
- Bug fix 677609, 456080. 
- SIGPIPE fix for Linux send(). 
- memcapable can now test ascii or binary based on flags. 
- Additional build fixes for SASL. 
v 0.46
released 2011-02-14
- Fixes a number of corner case bugs. 
- Fixes related to OpenBSD. 
- Better testing for protocol version. 
- Removes special case infinite wait on blocking setup. 
v 0.45
released 2011-02-09
- Add support for systemtap 
v 0.44
released 2010-09-23
- Windows bug fixes. 
- Hudson port support in test harness. 
- Improved portability of test hanrness. 
- SASL fixes. 
v 0.43
released 2010-07-28
- Added --args to memstat so that a greater range of values can be returned. 
- Prelimanary support for Windows. 
- memcached_stat_execute() merged. 
v 0.42
released 2010-07-06
- Mistake in libtool caused issue with library version 
v 0.41
released 2010-06-30
- Added --file for memcat. 
- Added limemcached_ping() to libmemcached_util 
- Bugfix for some cases where connect would have issues with timeout. 
- Wrong value for errno given as error on an IO failure inside of poll. 
- Bug fix for issue where multiple interfaces with bad DNS were not being caught. 
v 0.40
released 2010-04-23
- Placed retry logic in for busted resolvers 
- Add an ignore for SIGPIPE to solve OSX issues. 
- A couple of fixed for memcached_light server. 
- Updated to debug mode to track io_wait 
v 0.39
released 2010-04-06
- Add support for prefix keys to binary protocol. 
- Remove the undocumented call memcached_server_remove(). 
- The undocumented call memcached_server_by_key() now returns const. 
- memcached_server_error_reset() has been deprecated. 
- memcached_server_list() has been deprecated. Use memcached_server_cursor() to walk the servers found in a memcached_st() structure. 
- memcached_verbosity() can now be run concurrently with other operations. 
- SASL support. 
- Fixes memory leak found in EJECT HOSTS. 
v 0.38
released 2010-02-10
- C++ interface for libhashkit. 
- Modified memcached_set_memory_allocators() so that it requires a context pointer. 
- memcached_clone() now runs 5 times faster. 
- Functions used for callbacks are now given const memcached_st. 
- Added MEMCACHED_BEHAVIOR_CORK. 
- memslap now creates a configuration file at ~/.memslap.cnf 
- memcached_purge() now calls any callbacks registered during get execution. 
- Many fixes to memslap. 
- Updates for memcapable. 
- Compile fixes for OpenBSD. 
- Fix for possible recursive decent on IO failure. 
v 0.37
released 2010-01-12
- Fixed build for libhashkit. 
- Fixed install path regression. 
- Modified RPM to strict check install. 
- Added documentation for memcached_server_cursor(); 
- Added memcached_servers_reset(). 
- Modified memcached_st to remove dead cursor_server member. 
v 0.36
released 2010-01-07
- Merged in new memslap utility. 
- All of constants.h has been updated to match style (all old identifiers continue to work). 
- Added first pass for libhashkit. 
- Updated test Framework/extended tests. 
- Random read support during replication added. 
- Modified use_sort so that the option can be applied to any distribution type. 
- We removed the MEMCACHED_BEHAVIOR_KETAMA_COMPAT_MODE added in 0.35. Instead use memcached_behavior_set_distribution(). 
v 0.35
released 2009-11-09
- Added support for by_key operations for inc/dec methods. 
- Added mget test to memslap. 
- Support for compatible ketama for SpyMemcached 
- Update C++ interface. 
- Fix for memcp 
v 0.34
released 2009-10-13
- Added support for setting behavior flags on a connection pool. 
- Don't increment server_failure_counter on normal disconnects. 
- Added prototype for a callback based protocol parser (server side) with examples so that you could let your own application speak the memcached protocol 
- Updated memcapable to test ASCII protocol. 
- Changed behavior so that server can be removed at first sign of failure. 
- Added memcached_server_get_last_disconnect() call 
v 0.33
released 2009-09-23
- Added memcapable to test servers for binary compatibility. 
- Updated C++ interface. Added basic support for C++ exceptions. Added multiple constructors the memcached client object. The C++ interface now takes parameters which are C++ types (such as std::string). 
- Several bug fixes for binary protocol support. 
- Fixed crashing issue with dumping from memcachd server (server internals were changed without documenting change). 
v 0.32
released 2009-09-15
- Change of behavior where linger is only modified for no-block and then it is set to zero. 
- Added Twitter's memcached_server_error() functions. 
- Fix for OSX compiles in development builds. 
- Updated C++ interface. 
- Updated memcached_mget and memcached_mget_by_key to take a size_t as a parameter instead of an unsigned int for number_of_keys. 
v 0.31
released 2009-07-10
- Added support or HA via replication. 
- malloc() removed for server key usage. 
- Update build system. 
- Added support for memcached_set_memory_allocators(). 
- Fixed bug in configure.ac for have_htoll. 
v 0.30
released 2009-06-01
- Added memcachd_dump command (and framework for memdump tool). 
- Realigned all structures to remove padding (and line up important bits for 64bit caches. 
- Remove some of sprintf() in storage calls(). 
- Removed printf() in stat call for unknown stat member. 
- memcached_generate_hash() function added. 
- Added tests to make sure all hash functions are stable. 
v 0.29
released 2009-05-19
- Fixed malloc usage to calloc for spots where we need zero filled memory. 
- All code warnings now treated as errors. 
- Fixes for debian packaging. 
- Added new pooling mechanism. 
- MEMCACHED_BEHAVIOR_NO_BLOCK no longer also sets MEMCACHED_BEHAVIOR_BUFFER_REQUESTS. 
- Updated generic rpm. 
v 0.28
released 2009-04-15
- Fixed bug in init sructure (reapplied) 
- Fixed bug in get/set by key (nikkhils@gmail.com) 
v 0.27
released 2009-03-30
- Added new UDP fire-forget mode. 
- Reworked performance for mget() to better make use of async protocol 
- Cleaned up execution of fetch (just one set of code now) 
- Fixed Jenkin's for big endian hosts. 
- Updates for memstat to determine network latency. 
- Updates for binary protocol. 
- Many updates to documentation. 
v 0.26
released 2009-01-29
- Fix for decrement on hash key 
- Fixed assert that was catching bad memset() call in host_reset() 
- Fix purge issue for blocked IO which has been stacked. 
v 0.25
released 2008-11-28
- Jenkins HASH added. 
- Update of Murmur hash code 
- Support explicit weights (Robey Pointer, Evan Weaver) 
- Bugfix for ketama continuum (Robey Pointer) 
- New behavior MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY (Robey Pointer) 
- Don't ever call stats for weighting servers, because it is unstable. 
v 0.24
released 2008-09-16
- Cleanup compile warnings. 
- Fix issues in partitioning by keys. 
- Fixed "fail case" to make sure when calling memcached_clone() no memcached_st is over written. 
- New memcached_server_by_key() method for finding a server from a key. 
- memcached_server_free() was added for freeing server structures. 
v 0.23
released 2008-09-07
- Added strings.h header for Solaris 9 
- Solaris 64bit fix. 
- Support for weighted Ketama from Yin Chen. 
- Fix for Chinese 
- Fix for 0 length key to trigger bad key. 
- Added behaviors MEMCACHED_BEHAVIOR_SND_TIMEOUT, MEMCACHED_BEHAVIOR_RCV_TIMEOUT 
- Support for Binary Protocol added 
v 0.22
released 2008-07-14
- Fix where master key was no being checked for "bad key" 
- Fixed bugs in stats output (thread output was wrong) 
- Clarified MEMCACHED_BAD_KEY_PROVIDED is return for bad prefix key. 
- Found a bug in Flags return (Jacek Ostrowski) 
- Fixed issue with compiling on Visual Studio 
v 0.21
released 2008-05-24
- Change of char * to const char * for all key based functions. 
- New MEMCACHED_CALLBACK_PREFIX_KEY added. You can now create domains for values. 
- Fixed bug introducd in last version on memcp 
- Fix for death of file io to call shutdown() 
v 0.20
released 2008-05-05
- New consistent distribution tests. 
- Found a memory leak when a server constantly fails. 
- Fix in watchpoint macro 
- Changed default timeout to 1 second for poll timeouts 
- Wheel uses less memory/dynamic allocation for size (no longer limited to 512 hosts by default. 
- memslap memory leak fix 
- Added Ketama distribution 
- Fix assert.h compile problem on CentOS 
v 0.19
released 2008-04-09
- Documentation fix in libmemcached. 
- Fixed bug where sort was always occuring on hosts 
- Logic fix in branch prediction (thanks Jay!) 
- Read through cached support. 
- Fixed for cas by key operation. 
- Fix for memcached_server_st list structures to have correct count. 
- Added callback MEMCACHED_CALLBACK_DELETE_TRIGGER 
- Removed function call in favor of macro (aka cut out some instructions) 
v 0.18
released 2008-03-17
- Fix plus tests for non-zero value objects and flags. 
- MEMCACHED_HASH_MURMUR added for murmur algorithm provided. 
- MEMCACHED_BEHAVIOR_RETRY_TIMEOUT added to keep connecting from looping on timeout. 
- gcc branch prediction optimizations 
- Refactored entire tree to make include files cleaner 
- Fixed leaked socket. 
v 0.17
released 2008-02-27
- MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT added for connect timeout in non-block mode. 
- Incompatible change in memcached_behavior_set() api. We now use a uint64_t, instead of a pointer. 
- Fix for storage of values for zero. 
- memcached_server_cursor() function added to API for cycling through servers. 
v 0.16
released 2008-02-18
- Work on the UDP protocol 
- Added get_by_key, set_by_key tests for C++ API 
- Fix for limit_maxbytes to be 64bit in stats 
- Added Atom Smasher test (scale baby, scale!) 
- Servers are now sorted, meaning that servers are now ordered so that clients with the same lists, will have same distribution. (Idea from Ross McFarland). MEMCACHED_BEHAVIOR_SORT_HOSTS was added to enable this support. 
- Added MEMCACHED_BAD_KEY_PROVIDED error for auto, set, and get operations. MEMCACHED_BEHAVIOR_VERIFY_KEY was added to enable this feature. 
- More error messages on command line tools. 
- Fixed bugs in memcached_cas() operator. 
- Fix to loop through interfaces 
v 0.15
released 2008-01-29
- More work on the C++ API. 
- Bug fixes around block corner cases. 
- Slight performance increase in both read() and write(). 
v 0.14
released 2008-01-22
- For for bug found by Evan Weaver where increment() was not returning propper error of value was not found. 
- Fix for bad null pointer on flag by Toru Maesaka. 
- Refactor of all IO to just pass in the active server 
- Problem configuring (PKG_CHECK_MODULES) fixed by removal of "rpath" in support/libmemcached.pc.in (Thanks to Ross McFarland). 
- Added memcached_callback_get()/set() 
- First prototype of C++ interface 
- Updated docs for uint16_t changes in previous release 
v 0.13
released 2008-01-13
- MEMCACHED_BEHAVIOR_USER_DATA added to store user pointer. 
- Fix for failure to connect to invalidate socket. 
- Patch from Marc Rossi to add --hash option for memcp, memrm, and memcat. 
- Kevin's patch for fixing EOF issues during a read. 
- Toru Maesaka patch for stats mismatch 
- Fix for when CRC return 0 
- Fixed uint16_t issues around flags. Turns out the documentation on the protocol was wrong. 
- Lingering socket fixes for FreeBSD. 
- Patches from Kevin Dalley for FreeBSD 4.0 
- Added multi delete functions. 
- All get key returns have C style null termination 
- If memcached_server_list_append is passed NULLs instead of pointers it returns NULL. 
- Added memcached_fetch_execute() method 
- Found a bug where memcached_fetch() was not null terminating the result value. 
- memcached_behavior() now has the ability to set "buffering" so that data is not automatically flushed. 
- Behavior change, buffered commands now return MEMCACHED_BUFFERED 
v 0.12
released 2007-12-11
- Updates for consistent hashing 
- IPV6 support 
- Static allocation for hostname (performance) 
- Fixed bug where in non-block mode all data might not have been sent on close(). 
- Refactor of memcached_get() to use common code. 
- Change in value fetch, MEMCACHED_END is now returned when keys are no longer in the pipe. 
- Fixed bug where key could be out of range of characters 
- Added _by_key() methods to allow partitioning of values to particular servers. 
- MEMCACHED_DEFAILT_TIMEOUT is now set to a non -1 value. 
- Performance improvements in get operations. 
v 0.11
released 2007-11-26
- Added option to memcache_behavior_set() so that poll() can be timed out. 
- Fixed memory leak in case of using memcached_fetch_result() where no value was returned. 
- Bug fixed in memcached_connect() which would cause servers that did not need to be enabled to be enabled (performance issue). 
- Rewrote bounds checking code for get calls. 
- "make test" now starts its own memcached servers. 
- Added Hseih hash (MEMCACHED_HASH_HSIEH), which is showing about 7% performance over standard hash. 
v 0.10
released 2007-11-21
- Added append binary test. 
- Added MEMCACHED_BEHAVIOR_CACHE_LOOKUPS behavior so that you can save on multiple DNS lookups. 
- Added CAS support, though this is optional and must be enabled during runtime. 
- Added the utility memerror to create human readable error strings from memcached errors (aka convert ints to strings) 
- Fixed type in MEMCACHED_HOST_LOOKUP_FAILURE 
- Fixed bug where hostname might not be null terminated 
- Moved to using gethostbyname_r() on Linux to solve thread safety issue 
- Added -rpath support for pkg-config 
- Documentation fix for hash setting using memcached_behavior_set() 
v 0.9
released 2007-11-15
- fix for when no servers are definied. 
- different buffers are now kept for different connections to speed up async efforts 
- Modified increment/decrement functions to return uint64_t values 
- Fixed bug in cases where zero length keys were provided 
- Thread cleanup issue in memslap 
- No hostname lookup on reconnect 
- Fix for flag settings (was doing hex by accident!) 
- Support for 1.2.4 server additions "prepend" and "append" added. 
- Added memcached_version()... not sure if I will make this public or not. 
v 0.8
released 2007-11-05
- Adding support for CRC hash method 
- Adding support for UNIX sockets 
- Added additional HASHing methods of FNV1_64,FNV1A_64, FNV1_32, FNV1A_32 
- Added pkgconfig support (PKG_CHECK_MODULES) 
- Fixed conflict with defined type in MySQL 
- Added memcached_result_st structure and functions to manipulate it. 
v 0.7
released 2007-10-30
- Poved to poll() from select() 
- Fixes in internal string class for allocation of large numbers of strings. 
- memcached_mget() function now sends keys as it parses them instead of building strings as it goes. 
- Propper flush now for making sure we get all IO sent even when in non-block mode. 
- Added --enable-debug rule for configure 
- All asserts() removed (hey this is going into production!) 
v 0.6
released 2007-10-17
- get value returns are now null terminated (request by Cal Heldenbrand) 
- Fixed connections for more hosts then two. 
- Rewrite of the read/write IO systems to handle different sorts of host failures. 
- Added man pages for all functions and tools 
- Raised buffer size for readinng/writing to 16K 
- You can now optionally set the socket size for recv/send via memached_behavior_set/get. 
v 0.5
released 2007-10-09
- Ruby maintainer mentioned TCP_NODELAY patch he had added. Added this to C library as well. (Eric Hodel drbrain@segment7.net) 
- Added support script for set_benchmark 
- Updated memslap to allow testing of TCP_NODELAY 
- Updated memslap to support --flush (aka dump memcache servers before testing) 
- Fixed bug in multiple hosts not being activated 
- Added environmental variable MEMCACHED_SERVERS which can be used to set the servers list. 
- fixed memcached_stat method (and now memstat works) 
- server connect now happens on demand. 
- Help for all command line applications 
v 0.4
released 2007-10-03
- Added buffered IO to write calls for keys 
- Added buffered IO for reads 
- memstat was broken (bad if/else on connect) 
- New non-blocking IO (not default yet). Mucho faster 
- Refactor of test system. 
- memslap crash solved 
v 0.3
released 2007-10-01
- Jeff Fisher guppy@techmonkeys.org provided a spec file 
- Added "make rpm" around dist file 
- Added support for Solaris 
- Added support for DTrace 
- Fixed read to be recv and write to be send 
- Bug fix where memstat would core if no server was found 
- Added memslap tool (load generator) 
- Numerous bug fixes in library 
- Added calls to library for creating host lists (see text cases to understand how to use this). 
v 0.2
released 2007-09-27
- First public version