上周六去参加了csdn举办的TUP活动,最后一场的Tim Yang讲的《微博cache设计谈》,个人觉得讲得非常好和非常到位,其中有两点非常感同身受,就是内网流量问题和cache的key mutex问题导致大量请求穿透到db。后他又写了一篇博客《Memcache mutex设计模式》阐述这个问题。关于cache的key mutex问题在我的开发中叶碰到过很多,这...
String keyMutex = "mutex:" + key; if (redis.setnx(keyMutex, "1")) { // 3 min timeout to avoid mutex holder crash redis.expire(keyMutex, 3 * 60); String dbValue = db.get(key); redis.set(key, dbValue); redis.delete(keyMutex); } } }); } return value; } 4. 资源保护: ...
Sync primitive for golang. Key + Mutex = Kmutex. Contribute to im7mortal/kmutex development by creating an account on GitHub.
int pthdb_key(pthdb_session_t session, pthdb_pthread_t pthread, pthread_key_t * keyp, int cmd) int pthdb_mutex (pthdb_session_t session, pthdb_mutex_t * mutexp, int cmd) int pthdb_mutexattr (pthdb_sessio...
int pthdb_key(pthdb_session_t session, pthdb_pthread_t pthread, pthread_key_t * keyp, int cmd) int pthdb_mutex (pthdb_session_t session, pthdb_mutex_t * mutexp, int cmd) int pthdb_mutexattr (pthdb_sessio...
Verified as described. ./BUILD/compile-pentium64-debug-max ... Linking CXX executable mysqld Undefined symbols: "_wq_mutex_key", referenced from: all_innodb_mutexes in libinnobase.a(ha_innodb.cc.o) ld: symbol(s) not found collect2: ld returned 1 exit status make[2]: *** [sql/mysql...
const ECKeyExportConfig& params, ByteSource* out) { CHECK(key_data->GetAsymmetricKey()); ManagedEVPPKey m_pkey = key_data->GetAsymmetricKey(); CHECK(m_pkey); Mutex::ScopedLock lock(*m_pkey.mutex()); EC_KEY* ec_key = EVP_PKEY_get0_EC_KEY(key_data->GetAsymmetricKey().get());...
Keep Windows Forms Singleton via Mutex key word,usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Threading;usingSystem.Threading.Tasks;usingSystem.Windows.Forms;n...
In this paper, we focus on lateral movement and APT detection of Mimikatz. The main objective is an increased accuracy level while reducing the detection time for any Mimikatz version within networks using a Mutex object.Mohamed Gamal El-HadidiMarianne A. Azer会议论文...
图一:???key mutex问题 我这里指的cache不局限于memcached,事实上,key mutex在很多场合都是需要的,比如mysql中的innodb中说的机遇记录集的锁也可以当成key mutex。 http反向代理服务器cache的key mutex问题 我在09年为一个当时性能不是很高,但是短时间又难于优化的一个系统开发了一个反向代理服务器ICProxy(类似于...