Do not try to access an instance of `memcached_st` from multiple threads at the
same time. If you want to access memcached from multiple threads you should
either clone the `memcached_st`, or use the memcached pool implementation. See
Do not try to access an instance of `memcached_st` from multiple threads at the
same time. If you want to access memcached from multiple threads you should
either clone the `memcached_st`, or use the memcached pool implementation. See