Redis協議
* 參數個數
$ 第一個參數長度
第一個參數
$ 第一個參數長度
第二個參數
… …
編寫SQL語句，把mysql數據組合成Redis協議數據流
複製代碼
SELECT CONCAT(
“*16\r\n”,
‘KaTeX parse error: Can't use function '\r' in math mode at position 24: …H(redis_cmd), '\̲r̲\n',redis_cmd, …’, LENGTH(redis_key), ‘\r\n’,redis_key, ‘\r\n’,
‘KaTeX parse error: Can't use function '\r' in math mode at position 20: …ENGTH(hkey1), '\̲r̲\n',hkey1, '\r\…’, LENGTH(hval1), ‘\r\n’, hval1, ‘\r\n’
‘KaTeX parse error: Can't use function '\r' in math mode at position 20: …ENGTH(hkey2), '\̲r̲\n',hkey2, '\r\…’, LENGTH(hval2), ‘\r\n’, hval2, ‘\r\n’
‘KaTeX parse error: Can't use function '\r' in math mode at position 20: …ENGTH(hkey3), '\̲r̲\n',hkey3, '\r\…’, LENGTH(hval3), ‘\r\n’, hval3, ‘\r\n’
‘KaTeX parse error: Can't use function '\r' in math mode at position 20: …ENGTH(hkey4), '\̲r̲\n',hkey4, '\r\…’, LENGTH(hval4), ‘\r\n’, hval4, ‘\r\n’
‘KaTeX parse error: Can't use function '\r' in math mode at position 20: …ENGTH(hkey5), '\̲r̲\n',hkey5, '\r\…’, LENGTH(hval5), ‘\r\n’, hval5, ‘\r\n’
‘KaTeX parse error: Can't use function '\r' in math mode at position 20: …ENGTH(hkey6), '\̲r̲\n',hkey6, '\r\…’, LENGTH(hval6), ‘\r\n’, hval6, ‘\r\n’
‘KaTeX parse error: Can't use function '\r' in math mode at position 20: …ENGTH(hkey7), '\̲r̲\n',hkey7, '\r\…’, LENGTH(hval7), ‘\r\n’, hval7, ‘\r’
)
FROM (
SELECT
‘HMSET’ AS redis_cmd, CONCAT(resource_id,’_hash’) AS redis_key,
‘name’ AS hkey1,resource_title AS hval1,
‘type’ AS hkey2,resource_type_name AS hval2,
‘exe’ AS hkey3,resource_format AS hval3,
‘page’ AS hkey4,resource_page AS hval4,
‘size’ AS hkey5,resource_size AS hval5,
‘time’ AS hkey6,create_time AS hval6,
‘num’ AS hkey7,resource_downcount AS hval7
FROM t_resource_info
) AS t
複製代碼
拼出來的串
*16\r\n$5\r\nHMSET\r\n$9\r\nNBA231058\r\n$4\r\nname\r\n$51\r\n綠色食品的定義及綠色食品標誌的使用\r\n$4\r\ntype\r\n$6\r\n文本\r\n$3\r\nexe\r\n$3\r\ndoc\r\n$4\r\npage\r\n$1\r\n1\r\n$4\r\nsize\r\n$6\r\n79.5KB\r\n$4\r\ntime\r\n$19\r\n2013-05-31 08:56:59\r\n$3\r\nnum\r\n$2\r\n18\r\n
執行下面的語句
mysql -h 10.10.3.218 -uroot -p123456 -Dtest_db --skip-column-names --raw </usr/local/redis.sql |redis-cli --pipe
–raw: 使mysql不轉換字段值中的換行符。
–skip-column-names: 使mysql輸出的每行中不包含列名。
單獨執行
echo -en ‘*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$5\r\nvalue\r\n’ | redis-cli --pipe
經測試200W條數據，2分鐘以內就可以完成。
轉自文章