# 4.8 memcached-C++客户端 ```cpp /* MemcachedClient.h */ #ifndef MEMCACHEDCLIENT #define MEMCACHEDCLIENT #include <libmemcached/memcached.h> #include <iostream> #include <string> #include <time.h> using std::string; using std::cout; using std::endl; class MemCachedClient { public: ~MemCachedClient() { memcached_free(memc); }; MemCachedClient() { memcached_return rc; memcached_server_st *server = NULL; memc = memcached_create(NULL); server = memcached_server_list_append(server, "127.0.01", 11211, &rc); rc=memcached_server_push(memc,server); if (MEMCACHED_SUCCESS != rc) { cout <<"memcached_server_push failed! rc: " << rc << endl; } memcached_server_list_free(server); }; int Insert(const char* key, const char* value,time_t expiration = 3) { if (NULL == key || NULL == value) { return -1; } uint32_t flags = 0; memcached_return rc; rc = memcached_set(memc, key, strlen(key),value, strlen(value), expiration, flags); // insert ok if (MEMCACHED_SUCCESS == rc) { return 1; } else { return 0; } }; string Get(const char* key) { if (NULL == key) { return ""; } uint32_t flags = 0; memcached_return rc; size_t value_length; char* value = memcached_get(memc, key, strlen(key), &value_length, &flags, &rc); // get ok if(rc == MEMCACHED_SUCCESS) { return value; } return ""; }; private: memcached_st* memc; }; #endif ``` ```cpp /* test.cpp */ #include <iostream> #include "MemCachedClient.h" using std::cout; using std::endl; int main(void) { MemCachedClient mc; mc.Insert("kingcat","value123"); cout << mc.Get("kingcat") << endl; return 1; }; ```