Hmm. After that message, I updated my droplet to a 2Go of ram. It went way better (even if I don't understand how a woocommerce with not so many customers can't run on a 1Go droplet). The thing is, the server went down at the end of the day. I restarted it and everything is up this morning. But the people are going to come !
This is wht mysqltuner is saying :
tmp_table_size (> 32M) max_heap_table_size (> 32M) innodb_buffer_pool_instances (=1)
What's the recommandation on a 2Go and 2 cores for the 2 first line ? 32M ? 64 ?
Thanks !