Generating hash values directly¶
Hash a key value
SYNOPSIS¶
#include <libmemcached/memcached.h>
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type
memcached_hash_t¶
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uint32_t
memcached_generate_hash_value(const char *key, size_t key_length, memcached_hash_t hash_algorithm)¶
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uint32_t
memcached_generate_hash(memcached_st *ptr, const char *key, size_t key_length)¶
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type
MEMCACHED_HASH_DEFAULT¶
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type
MEMCACHED_HASH_MD5¶
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type
MEMCACHED_HASH_CRC¶
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type
MEMCACHED_HASH_FNV1_64¶
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type
MEMCACHED_HASH_FNV1A_64¶
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type
MEMCACHED_HASH_FNV1_32¶
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type
MEMCACHED_HASH_FNV1A_32¶
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type
MEMCACHED_HASH_JENKINS¶
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type
MEMCACHED_HASH_MURMUR¶
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type
MEMCACHED_HASH_HSIEH¶
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type
MEMCACHED_HASH_MURMUR3¶
Compile and link with -lmemcachedutil -lmemcached
DESCRIPTION¶
memcached_generate_hash_value() allows you to hash a key using one of
the hash functions defined in the library. This method is provided for
the convenience of higher-level language bindings and is not necessary
for normal memcache operations.
The allowed hash algorithm constants are listed in the manpage for
memcached_behavior_set().
memcached_generate_hash() takes a memcached_st structure
and produces the hash value that would have been generated based on the
defaults of memcached_st.
As of version 0.36 all hash methods have been placed into the library libhashkit(3) which is linked with libmemcached(3). For more information please see its documentation.
RETURN VALUE¶
A 32-bit integer which is the result of hashing the given key. For 64-bit hash algorithms, only the least-significant 32 bits are returned.