libmemcachedutil
libhashkit
Client Applications
Copyright
+#include <libmemcached/memcached.h>
-Compile and link with -lmemcached
+memcached_increment(memcached_st *ptr, const char *key, size_t key_length, uint32_t offset, uint64_t *value)¶memcached_decrement(memcached_st *ptr, const char *key, size_t key_length, uint32_t offset, uint64_t *value)¶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_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_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_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_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_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)¶ptr -- pointer to an initialized memcached_st struct
group_key -- key namespace
group_key_length -- length of the key namespace without any terminating zero
key -- the key
key_length -- length of the key without any terminating zero
offset -- offset to increment/decrement
initial -- initial value if key does not exist and expiration is not MEMCACHED_EXPIRATION_NOT_ADD
expiration -- expiration as a unix timestamp or as relative expiration time in seconds
value -- the resulting value after initialization/increment/decrement
memcached_return_t indicating success
Compile and link with -lmemcached
memcached(1) servers have the ability to increment and decrement keys +
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 key length 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.
memcached_increment() takes a key and key_length 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 key_length 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 key_length 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 key_length 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.
A value of type memcached_return_t is returned.
+
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.
memcached_strerror() to translate this value to a printable string.
+ + © Copyright