Beside the default Elasticsearch storage, the user can use shardingJDBC and MySQL as storage implementor. Note: it only supported MYSQL database sharding, and due to the license restrictions, the users need to import MYSQL Driver manually.
storage: shardingjdbc: driverClass: com.mysql.jdbc.Driver # JDBC Datasource connections for ShardingJDBC, multiple should be separated by comma url: jdbc:mysql://ip1:port1/skywalking,jdbc:mysql://ip2:port2/skywalking # Usernames, which match the sequence of Datasource URLs userName: admin,admin # Passwords, which match the sequence of Datasource URLs password: 123456,123456