mysql InnoDB UUID 主键 性能优化【实践篇】.md 有序uuid

mysql InnoDB uuid 主键 性能优化【实践篇】.md mysql InnoDB UUID 主键 性能优化【实践篇】.md 有序uuid mysql InnoDB UUID 主键 性能优化【原理篇】.md mysql InnoDB UUID 主键 性能优化【性能分析篇】.md

###1. java生成32位uuid和从新排序 uuid 36为 去掉-为32位

import com.google.common.base.CharMatcher;
import com.fasterxml.uuid.EthernetAddress;
import com.fasterxml.uuid.Generators;
public class UuidUtils {
    public static final TimeBasedGenerator UUID_GENERATOR =
            Generators.timeBasedGenerator(EthernetAddress.fromInterface());
 public static String getUuidByJugOrdered() {
        Logger LOGGER = LoggerFactory.getLogger(BasePojo4String.class);
        UUID uuidJug = UUID_GENERATOR.generate();
        String uuid = uuidJug.toString();
        uuid = uuid.substring(14, 19) + uuid.substring(9, 14) + uuid.substring(19, 24) + uuid
                .substring(24) + "-" + uuid.substring(0, 8);
        return CharMatcher.anyOf("-").removeFrom(uuid);
    }
}

转换结果示例

原始uuid    22886ea0-0048-11e5-9e24-fcaa1490706f    转换后    11e5-0048-9e24-fcaa1490706f-22886ea0
原始uuid    229c92e1-0048-11e5-9e24-fcaa1490706f    转换后    11e5-0048-9e24-fcaa1490706f-229c92e1
原始uuid    22b37642-0048-11e5-9e24-fcaa1490706f    转换后    11e5-0048-9e24-fcaa1490706f-22b37642
原始uuid    22ca80b3-0048-11e5-9e24-fcaa1490706f    转换后    11e5-0048-9e24-fcaa1490706f-22ca80b3
原始uuid    22de08b4-0048-11e5-9e24-fcaa1490706f    转换后    11e5-0048-9e24-fcaa1490706f-22de08b4

###2.mysql二进制存储 表主键字段

c_id  BINARY(16)  NOT NULL COMMENT 'ID',PRIMARY KEY (c_id)
binary的意思就是按原始的二进制方式存储，只存储二进制的信息

转换函数【32位字符<-->16字节】

DELIMITER $$
DROP FUNCTION IF EXISTS toBinaryUuid $$
CREATE FUNCTION toBinaryUuid($data VARCHAR(36)) 
RETURNS binary(16) DETERMINISTIC NO SQL
BEGIN
    DECLARE $result BINARY(16) DEFAULT NULL;
    IF $data IS NOT NULL THEN
        SET $data = REPLACE($data,'-','');
        SET $result = UNHEX($data);
    END IF;
    RETURN $result;
END
$$

DROP FUNCTION IF EXISTS toUuid $$
CREATE FUNCTION toUuid($data BINARY(16)) RETURNS char(36) CHARSET utf8
DETERMINISTIC
NO SQL
BEGIN
    DECLARE $result CHAR(36) DEFAULT NULL;
    IF $data IS NOT NULL THEN
        SET $result = HEX($data);
    END IF;
    RETURN $result;
END
$$
DELIMITER ;

-- 测试
SELECT toBinaryUuid('11e500322d38f45fa67dfcaa1490706f');
SELECT toUuid(toBinaryUuid('11e500322d38f45fa67dfcaa1490706f'));

###3.测试数据 测试表

DROP TABLE IF EXISTS poi_action_data CASCADE;
CREATE TABLE poi_action_data (
    c_id  BINARY(16)  NOT NULL COMMENT 'ID',
    c_user_id VARCHAR (80) NOT NULL COMMENT '用户ID',
    c_product_id VARCHAR (32) NOT NULL COMMENT '产品ID',
    c_project_id  VARCHAR (32) COMMENT '项目ID',
    c_type CHAR (1) NOT NULL COMMENT '动做类型，a=行为动做action，b=业务动做biz',
    c_action_id VARCHAR (32) NOT NULL COMMENT '动做编码',
    c_value VARCHAR (2000) COMMENT '指标值',
    c_time TIMESTAMP COMMENT '修改时间',
    c_product_version  VARCHAR (32) COMMENT '产品版本',
    c_log_id VARCHAR (32) NOT NULL COMMENT '日志ID',
    c_json VARCHAR (500) COMMENT 'json格式扩展信息',
    c_tag1 VARCHAR (32) COMMENT '冗余字段1',
    c_tag2 VARCHAR (32) COMMENT '冗余字段2',
    PRIMARY KEY (c_product_id,c_time,c_id)
    -- ,CONSTRAINT poi_ad_log_id FOREIGN KEY (c_log_id) REFERENCES poi_action_log (c_id) ON DELETE RESTRICT 
) ENGINE = INNODB COMMENT = '解析后的动做数据，时长、次数、业务量等';

插入数据、查询数据

INSERT INTO poi_action_data 
(c_id, c_user_id, c_product_id, c_project_id, c_type, c_action_id, c_value, c_time, c_product_version, c_log_id, c_json, c_tag1, c_tag2) 
VALUES (uuidToBinary('11e5003f0da3b434b5e7fcaa1490706f'), '1', '17', NULL, 'a', '12', '1', '2015-04-13 11:06:57', '10', '11e5003f0a850f10b5e7fcaa1490706f', NULL, NULL, NULL);
SELECT toUuid(c_id) FROM poi_action_data;

###4. mysql uuid

DELIMITER $$

DROP FUNCTION IF EXISTS toOrderedUuid $$
CREATE FUNCTION toOrderedUuid(uuid BINARY(36))
RETURNS binary(16) DETERMINISTIC 
RETURN UNHEX(CONCAT(SUBSTR(uuid, 15, 4),SUBSTR(uuid, 10, 4),SUBSTR(uuid, 1, 8),SUBSTR(uuid, 20, 4),SUBSTR(uuid, 25)))$$

DELIMITER ;
-- SELECT toOrderedUuid(UUID()),LENGTH(toOrderedUuid(UUID()));