MEMCACHED_DECREMENT_WITH_INITIAL(libmemcachMEMCACHED_DECREMENT_WITH_INITIAL(3)NAMEmemcached_decrement_with_initial - Incrementing and Decrementing Values
SYNOPSIS
#include <libmemcached/memcached.h>
memcached_return_t memcached_increment(memcached_st *ptr, const
char *key, size_t key_length, uint32_t offset, uint64_t *value)
memcached_return_t memcached_decrement(memcached_st *ptr, const
char *key, size_t key_length, uint32_t offset, uint64_t *value)
memcached_return_t memcached_increment_with_initial(memcached_st *ptr,
const char *key, size_t key_length, uint64_t offset, uint64_t initial,
time_t expiration, uint64_t *value)
memcached_return_t memcached_decrement_with_initial(memcached_st *ptr,
const char *key, size_t key_length, uint64_t offset, uint64_t initial,
time_t expiration, uint64_t *value)
memcached_return_t memcached_increment_by_key(memcached_st *ptr, const
char *group_key, size_t group_key_length, const char *key,
size_t key_length, uint32_t offset, uint64_t *value)
memcached_return_t memcached_decrement_by_key(memcached_st *ptr, const
char *group_key, size_t group_key_length, const char *key,
size_t key_length, uint32_t offset, uint64_t *value)
memcached_return_t memcached_increment_with_initial_by_key(mem‐
cached_st *ptr, const char *group_key, size_t group_key_length, const
char *key, size_t key_length, uint64_t offset, uint64_t initial,
time_t expiration, uint64_t *value)
memcached_return_t memcached_decrement_with_initial_by_key(mem‐
cached_st *ptr, const char *group_key, size_t group_key_length, const
char *key, size_t key_length, uint64_t offset, uint64_t initial,
time_t expiration, uint64_t *value)
Compile and link with -lmemcached
DESCRIPTIONmemcached(1) servers have the ability to increment and decrement keys
(overflow and underflow are not detected). This gives you the ability
to use memcached to generate shared sequences of values.
memcached_increment takes a key and keylength and increments the value
by the offset passed to it. The value is then returned via the uint32_t
value pointer you pass to it.
memcached_decrement takes a key and keylength and decrements the value
by the offset passed to it. The value is then returned via the uint32_t
value pointer you pass to it.
memcached_increment_with_initial takes a key and keylength and incre‐
ments the value by the offset passed to it. If the object specified by
key does not exist, one of two things may happen: If the expiration
value is MEMCACHED_EXPIRATION_NOT_ADD, the operation will fail. For all
other expiration values, the operation will succeed by seeding the
value for that key with a initial value to expire with the provided
expiration time. The flags will be set to zero.The value is then
returned via the uint32_t value pointer you pass to it. mem‐
cached_increment_with_initial is only available when using the binary
protocol.
memcached_decrement_with_initial takes a key and keylength and decre‐
ments the value by the offset passed to it. If the object specified by
key does not exist, one of two things may happen: If the expiration
value is MEMCACHED_EXPIRATION_NOT_ADD, the operation will fail. For all
other expiration values, the operation will succeed by seeding the
value for that key with a initial value to expire with the provided
expiration time. The flags will be set to zero.The value is then
returned via the uint32_t value pointer you pass to it. mem‐
cached_decrement_with_initial is only available when using the binary
protocol.
memcached_increment_by_key(), memcached_decrement_by_key(),
memcached_increment_with_initial_by_key(), and
memcached_decrement_with_initial_by_key() are master key equivalents of
the above.
RETURN
A value of type memcached_return_t is returned. On success that value
will be MEMCACHED_SUCCESS. Use memcached_strerror to translate this
value to a printable string.
HOME
To find out more information please check: http://libmemcached.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,MEMCACHED_DECREMENT_WITH_INITIAL(3)
