libmemcached - Client library for memcached
C Client Library for memcached (libmemcached, -lmemcached)
#include <memcached.h>
``Memcached is a high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load.'' http://danga.com/memcached/
libmemcached is a small, thread-safe client library for the memcached protocol. The code has all been written with an eye to allow for both web and embedded usage. It handles the work behind routing particular keys to specific servers that you specify (and values are matched based on server order as supplied by you). It implements both a modula and consistent method of object distribution.
There are multiple implemented routing and hashing methods. See the
memcached_behavior_set() manpage.
All operations are performed against a memcached_st structure.
These structures can either be dynamically allocated or statically
allocated and then initialized by memcached_create(). Functions have been
written in order to encapsulate the memcached_st. It is not
recommended that you operate directly against the structure.
Nearly all functions return a memcached_return value.
This value can be translated to a printable string with memcached_strerr(3).
Partitioning based on keys is supported in the library. Using the key partioning functions it is possible to group sets of object onto servers.
memcached_st structures are thread-safe, but each thread must
contain its own structure (that is, if you want to share these among
threads you must provide your own locking). No global variables are
used in this library.
If you are working with GNU autotools you will want to add the following to your configure.ac to properly include libmemcached in your application.
PKG_CHECK_MODULES(DEPS, libmemcached >= 0.8.0)
AC_SUBST(DEPS_CFLAGS)
AC_SUBST(DEPS_LIBS)
Some features of the library must be enabled through memcached_behavior_set().
Hope you enjoy it!
A number of constants have been provided for in the library.
The default port used by memcached(3).
Default maximum size of a key (which includes the null pointer). Master keys have no limit, this only applies to keys used for storage.
Default size of key (which includes the null pointer).
This is the ``stride'' used in the consistent hash used between replicas.
Maximum allowed size of the hostname.
String value of libmemcached version such as ``1.23.4''
Major version value. Such as 1.23.4, would be 1
Major version value. Such as 1.23.4, would be 23
Major version value. Such as 1.23.4, would be 4
When using threads or forked processes it is important to keep an instance
of memcached_st per process or thread. Without creating your own locking
structures you can not share a single memcached_st. You can though call
memcached_quit(3) on a memcached_st and then use the resulting cloned
structure.
To find out more information please check: http://tangent.org/552/libmemcached.html
Brian Aker, <brian@tangent.org>
memcached_delete, memcat, memcached_flush, memcached_version, memcached_verbosity, memcached_result_st, memslap, memerror, memcached_behavior, memcached_strerror, memcached_server_st, memcached_quit, memcp, memcached_examples, memcached_servers, memstat, memcached_get, memcached_stats, memcached, memcached_auto, memcached_set, memrm, memflush, memcached_create, memcached_callback
Source Code: