NAME¶
memcached_increment_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(memcached_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(memcached_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
DESCRIPTION¶
memcached(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 increments 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. memcached_increment_with_initial is only available
when using the binary protocol.
memcached_decrement_with_initial takes a key and keylength and decrements 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. memcached_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 ALSO¶
memcached(1) libmemcached(3) memcached_strerror(3)
AUTHOR¶
Brian Aker
COPYRIGHT¶
2011-2013, Brian Aker DataDifferential,
http://datadifferential.com/