MEMCACHED_STAT_GET_VALUE(3) libmemcached MEMCACHED_STAT_GET_VALUE(3)NAMEmemcached_stat_get_value - libmemcached Documentation
Get memcached statistics
SYNOPSIS
#include <libmemcached/memcached.h>
memcached_stat_st
memcached_return_t (*memcached_stat_fn)(const memcached_instance_st
* server, const char *key, size_t key_length, const char *value,
size_t value_length, void *context)
memcached_stat_st *memcached_stat(memcached_st *ptr, char *args, mem‐
cached_return_t *error)
memcached_return_t memcached_stat_servername(memcached_stat_st *stat,
char *args, const char *hostname, in_port_t port)
char * memcached_stat_get_value(memcached_st *ptr,
memcached_stat_st *stat, const char *key, memcached_return_t *error)
char ** memcached_stat_get_keys(memcached_st *ptr,
memcached_stat_st *stat, memcached_return_t *error)
memcached_return_t memcached_stat_execute(memcached_st *memc, const
char *args, memcached_stat_fn func, void *context)
Compile and link with -lmemcached
DESCRIPTIONlibmemcached(3) has the ability to query a memcached server (or collec‐
tion of servers) for their current state. Queries to find state return
a memcached_stat_st structure. You are responsible for freeing this
structure. While it is possible to access the structure directly it is
not advisable. memcached_stat_get_value() has been provided to query
the structure.
memcached_stat_execute() uses the servers found in memcached_stat_st
and executes a "stat" command on each server. args is an optional argu‐
ment that can be passed in to modify the behavior of "stats". You will
need to supply a callback function that will be supplied each pair of
values returned by the memcached server.
memcached_stat() fetches an array of memcached_stat_st structures con‐
taining the state of all available memcached servers. The return value
must be freed by the calling application. If called with the MEM‐
CACHED_BEHAVIOR_USE_UDP behavior set, a NULL value is returned and the
error parameter is set to MEMCACHED_NOT_SUPPORTED.
memcached_stat_servername() can be used standalone without a mem‐
cached_st to obtain the state of a particular server. "args" is used
to define a particular state object (a list of these are not provided
for by either the memcached_stat_get_keys() call nor are they defined
in the memcached protocol). You must specify the hostname and port of
the server you want to obtain information on.
memcached_stat_get_value() returns the value of a particular state key.
You specify the key you wish to obtain. The key must be null termi‐
nated.
memcached_stat_get_keys() returns a list of keys that the server has
state objects on. You are responsible for freeing this list.
A command line tool, memstat(1), is provided so that you do not have to
write an application to do this.
RETURN
Varies, see particular functions.
Any method returning a memcached_stat_st expects you to free the memory
allocated for it.
HOME
To find out more information please check: http://libmemcached.org/
AUTHOR
Brian Aker, <brian@tangent.org>
SEE ALSOmemcached(1)libmemcached(3)memcached_strerror(3)AUTHOR
Brian Aker
COPYRIGHT
2011-2013, Brian Aker DataDifferential, http://datadifferential.com/
1.0.18 February 09, 2014 MEMCACHED_STAT_GET_VALUE(3)
