IoTDB jdbc 統合データベース接続プール

IoTDBに2年ほど関わっていますが、クエリ効率は公式にjdbcが高いと言われていることをいつも覚えています。

この記事では、IoTDB と Druid の統合について紹介します

接続プールを使用しない統合

apache:
  iotdb:
    username: root
    password: root
    driver-name: org.apache.iotdb.jdbc.IoTDBDriver
    url: jdbc:iotdb://192.168.0.12:6667/
    initial-size: 5
    min-idle: 10
    max-active: 30
    max-wait: 60000
    remove-abandoned: true
    remove-abandoned-timeout: 30
    time-between-eviction-runs-millis: 60000
    min-evictable-idle-time-millis: 300000
    test-while-idle: false
    test-on-borrow: false
    test-on-return: false

@Slf4j
@Configuration
public class IotConfig {
    @Value("${apache.iotdb.username}")
    private String username;

    @Value("${apache.iotdb.password}")
    private String password;

    @Value("${apache.iotdb.driver-name}")
    private String driverName;

    @Value("${apache.iotdb.url}")
    private String url;

    @Value("${apache.iotdb.initial-size}")
    private int initialSize;

    @Value("${apache.iotdb.min-idle}")
    private int minIdle;

    @Value("${apache.iotdb.max-active}")
    private int maxActive;

    @Value("${apache.iotdb.max-wait}")
    private int maxWait;

    @Value("${apache.iotdb.remove-abandoned}")
    private boolean removeAbandoned;

    @Value("${apache.iotdb.remove-abandoned-timeout}")
    private int removeAbandonedTimeout;

    @Value("${apache.iotdb.time-between-eviction-runs-millis}")
    private int timeBetweenEvictionRunsMillis;

    @Value("${apache.iotdb.min-evictable-idle-time-millis}")
    private int minEvictableIdleTimeMillis;

    @Value("${apache.iotdb.test-while-idle}")
    private boolean testWhileIdle;

    @Value("${apache.iotdb.test-on-borrow}")
    private boolean testOnBorrow;

    @Value("${apache.iotdb.test-on-return}")
    private boolean testOnReturn;

    private static DruidDataSource iotDbDataSource;


    private Connection getConnection() {
        if (iotDbDataSource == null) {
            iotDbDataSource = new DruidDataSource();
            //设置连接参数
            iotDbDataSource.setUrl(url);
            iotDbDataSource.setDriverClassName(driverName);
            iotDbDataSource.setUsername(username);
            iotDbDataSource.setPassword(password);
            iotDbDataSource.setInitialSize(initialSize);
            iotDbDataSource.setMinIdle(minIdle);
            iotDbDataSource.setMaxActive(maxActive);
            iotDbDataSource.setMaxWait(maxWait);
            iotDbDataSource.setRemoveAbandoned(removeAbandoned);
            iotDbDataSource.setRemoveAbandonedTimeout(removeAbandonedTimeout);
            iotDbDataSource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
            iotDbDataSource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
            //防止过期
            iotDbDataSource.setTestWhileIdle(testWhileIdle);
            iotDbDataSource.setTestOnBorrow(testOnBorrow);
            iotDbDataSource.setTestOnReturn(testOnReturn);
        }

        Connection connection = null;
        try {
            connection = iotDbDataSource.getConnection();
        } catch (SQLException e) {
            e.printStackTrace();
            log.error("iotDB getConnection失败: error={}", e.getMessage());
        }
        return connection;
    }

    private void close(Statement statement, Connection connection) {
        try {
            if (statement != null) {
                statement.close();
            }
            if (connection != null) {
                connection.close();
            }
        } catch (Exception e) {
            log.error("iotDB close失败: error={}", e.getMessage());
        }
    }


}

統合方法を照会するには、以前のブログを表示できます