{"id":139938,"date":"2020-07-14T22:01:56","date_gmt":"2020-07-14T14:01:56","guid":{"rendered":"http:\/\/4563.org\/?p=139938"},"modified":"2020-07-14T22:01:56","modified_gmt":"2020-07-14T14:01:56","slug":"mysql-%e5%8f%af%e9%87%8d%e5%a4%8d%e8%af%bb%e9%9a%94%e7%a6%bb%e7%ba%a7%e5%88%ab%e4%b8%8b%e6%98%af%e5%90%a6%e8%a7%a3%e5%86%b3%e4%ba%86%e5%b9%bb%e8%af%bb%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=139938","title":{"rendered":"MySQL \u53ef\u91cd\u590d\u8bfb\u9694\u79bb\u7ea7\u522b\u4e0b\u662f\u5426\u89e3\u51b3\u4e86\u5e7b\u8bfb\u95ee\u9898"},"content":{"rendered":"<div>\n<div>\n<div>\n<h1>                  MySQL \u53ef\u91cd\u590d\u8bfb\u9694\u79bb\u7ea7\u522b\u4e0b\u662f\u5426\u89e3\u51b3\u4e86\u5e7b\u8bfb\u95ee\u9898               <\/h1>\n<p> <\/p>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : gotonull <\/span>  <span><i><\/i> 7<\/span> <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div isfirst=\"1\"> <\/p>\n<p>MySQL \u5728\u9ed8\u8ba4\u7684\u4e8b\u52a1\u9694\u79bb\u7ea7\u522b\u4e0b\u5230\u5e95\u6709\u6ca1\u6709\u89e3\u51b3\u5e7b\u8bfb\u95ee\u9898\u554a<\/p>\n<\/p><\/div>\n<div> <b>\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (<span>34<\/span>)        <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<ul>\n<li data-pid=\"2654233\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : iseki <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u6ca1\u6709\u5427                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654234\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : zarte <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u53ea\u662f\u4e8b\u52a1\u89e3\u51b3\u4e0d\u4e86\u5e76\u53d1                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654235\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : iseki <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u4f60\u770b\u770b PostgreSQL\u2026\u90a3\u4e2a\u6ca1\u6709\u2026\u6709\u8c13\u8bcd\u9501                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654236\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : pingdongyi <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u770b\u5982\u4f55\u5b9a\u4e49\u5e7b\u8bfb                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654237\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : iseki <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @iseki \u4f46\u662f pg \u9ed8\u8ba4\u7ea7\u522b\u597d\u8c61\u662f\u8bfb\u63d0\u4ea4                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654238\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : nwg <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u63d2\u5165\u7c7b\u578b\u7684\u5e7b\u8bfb\u89e3\u51b3\u4e0d\u4e86 \u6bd4\u5982\uff1a\u9884\u5b9a\u4f1a\u8bae\u5ba4\u95ee\u9898<br \/>\u66f4\u65b0\u7c7b\u522b\u7684\u5e7b\u8bfb\u89e3\u51b3\u4e86 \u591a\u6b21\u67e5\u8be2\u662f\u4e00\u4e2a\u6570\u636e                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654239\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : xuwei0056 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u89e3\u51b3\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654240\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : BBCCBB <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u89e3\u51b3\u4e86, \u6709 gap lock.                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654241\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : ylsc633 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             http:\/\/interview.wzcu.com\/%E6%95%B0%E6%8D%AE%E5%BA%93\/MVCC%E5%92%8CNext-Key%20Locks.html#%E5%A6%82%E4%BD%95%E8%A7%A3%E5%86%B3%E5%B9%BB%E8%AF%BB                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654242\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : bear2000 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u89e3\u51b3\u4e86\u3002<\/p>\n<p>\u5728\u975e\u9501\u5b9a\u8bfb\u7684\u60c5\u51b5\u4e0b\u4f1a\u8bfb\u53d6\u4e00\u4e2a\u5feb\u7167\u6570\u636e\uff0c\u4e0d\u4f1a\u51fa\u73b0\u5e7b\u8bfb\u3002<\/p>\n<p>\u5728\u9501\u5b9a\u8bfb\u7684\u60c5\u51b5\u4e0b\u4f1a\u6709\u95f4\u9699\u9501\uff0c\u4e5f\u4e0d\u4f1a\u51fa\u73b0\u5e7b\u8bfb\u3002<\/p>\n<p>PS\uff1a\u63a8\u8350\u770b\u4e00\u770b\u300a MySQL \u6280\u672f\u5185\u5e55 InnoDB \u5b58\u50a8\u5f15\u64ce\u300b                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654243\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : RedBeanIce <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             mvcc\uff0c\u95f4\u9699\u9501\uff08\u4e66\u4e0a\u770b\u7684\uff09                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654244\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : huntcool001 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u6ca1\u6709\u5b8c\u5168\u89e3\u51b3. <br \/>StackoverFlow \u4e0a\u8fd9\u4e2a\u4f8b\u5b50: https:\/\/stackoverflow.com\/questions\/5444915\/how-to-produce-phantom-reads<\/p>\n<p>create table ab(a int primary key, b int);<\/p>\n<p>Tx1:<br \/>begin;<br \/>select * from ab; \/\/ empty set<\/p>\n<p>Tx2:<br \/>begin;<br \/>insert into ab values(1,1);<br \/>commit;<br \/>Tx1:<br \/>select * from ab; \/\/ empty set, expected phantom read missing.<br \/>update ab set b = 2 where a = 1; \/\/ 1 row affected.<br \/>select * from ab; \/\/ 1 row. phantom read here!!!!                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654245\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : lscexpress <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u5e7b\u8bfb\u5f71\u54cd\u4f60\u4e1a\u52a1\u5417\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654246\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : hheedat <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u89e3\u51b3\u4e86 MVCC + gap lock                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654247\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : maigebaoer <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u5e76\u6ca1\u6709                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654248\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : jimmyismagic <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u9ed8\u8ba4\u5e76\u6ca1\u6709\u89e3\u51b3\u5e7b\u8bfb\uff0c\u56e0\u4e3a\u53ea\u9501\u4e86\u884c\uff0c\u5bf9\u4e8e\u6279\u91cf\u5904\u7406\uff0c\u4f60\u53ef\u80fd\u5728\u5220\u4e86\u4e00\u6279\u7b26\u5408\u6761\u4ef6\u7684\u6570\u636e\u540e\uff0c\u53c8\u8bfb\u5230\u65b0\u7684\u7b26\u5408\u6761\u4ef6\u7684\u6570\u636e                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654249\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : liprais <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u6ca1\u6709<br \/>\u65b0\u589e\u7684\u4e0d\u4f1a\u770b\u5230<br \/>update \u7684\u4f1a\u6709\u95ee\u9898                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654250\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : gadsavesme <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u5feb\u7167\u8bfb\u89e3\u51b3\uff0c\u5f53\u524d\u8bfb\u8fd8\u662f\u6709\u95ee\u9898                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654251\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : pangleon <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             MYSQL \u7528\u95f4\u9699\u9501\u89e3\u51b3\u5e7b\u8bfb\u95ee\u9898\uff0c\u7ed3\u679c\u95f4\u9699\u9501\u53c8\u4f1a\u5f15\u8d77\u522b\u7684 BUG\uff0c\u6240\u4ee5 RR \u7ea7\u522b\u5f88\u591a\u516c\u53f8\u90fd\u4e0d\u63a8\u8350\u4f7f\u7528\u3002\u90fd\u662f\u7528 RC \u4e86\uff0c\u6bd5\u7adf\u4eba\u5bb6 ORACLE \u5c31\u662f\u9ed8\u8ba4 RC \u6709\u8c01\u53bb\u6539\u4e86\u4e48\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654252\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : gotonull <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @lscexpress \u6ca1\u6709\uff0c\u53ea\u662f\u9762\u8bd5\u7684\u65f6\u5019\u88ab\u95ee\u5230\u4e86\uff0c\u6211\u8bf4\u6ca1\u89e3\u51b3\uff0c\u9762\u8bd5\u5b98\u8bf4\u89e3\u51b3\u4e86\u3002\u6240\u4ee5\u6765\u95ee\u95ee\u5927\u795e\u4eec\u3002\u7ed3\u679c\u5927\u5bb6\u7684\u56de\u7b54\u8fd8\u662f\u5404\u79cd\u8bf4\u6cd5\u90fd\u6709\uff0c\u90fd\u7ed9\u6211\u6574\u61f5\u4e86\uff01                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654253\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : zy445566 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @gotonull \u786e\u5b9e\u89e3\u51b3\u4e86\uff0c\u5c31\u662f\u4e0a\u8bf4\u95f4\u9699\u9501\uff0c\u4f7f\u7528\u7684\u65f6\u5019\u901a\u8fc7 select +for update \u9501\u5b9a\u63a7\u5236\u8303\u56f4                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654254\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : mahone3297 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u6781\u5ba2\u65f6\u95f4\uff0cMysql \u7684\u8bfe\u6709\u8bb2\uff0c\u89e3\u51b3\u4e86\u3002<br \/>20 | \u5e7b\u8bfb\u662f\u4ec0\u4e48\uff0c\u5e7b\u8bfb\u6709\u4ec0\u4e48\u95ee\u9898\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654255\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : zgzhang <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u5728\u5feb\u7167\u8bfb\u8bfb\u60c5\u51b5\u4e0b\uff0cmysql \u901a\u8fc7 mvcc \u6765\u907f\u514d\u5e7b\u8bfb\u3002<br \/>\u5728\u5f53\u524d\u8bfb\u8bfb\u60c5\u51b5\u4e0b\uff0cmysql \u901a\u8fc7 next-key \u6765\u907f\u514d\u5e7b\u8bfb\u3002<br \/>select * from t where a=1;\u5c5e\u4e8e\u5feb\u7167\u8bfb<br \/>select * from t where a=1 lock in share mode;\u5c5e\u4e8e\u5f53\u524d\u8bfb<\/p>\n<p>\u4e0d\u80fd\u628a\u5feb\u7167\u8bfb\u548c\u5f53\u524d\u8bfb\u5f97\u5230\u7684\u7ed3\u679c\u4e0d\u4e00\u6837\u8fd9\u79cd\u60c5\u51b5\u8ba4\u4e3a\u662f\u5e7b\u8bfb\uff0c\u8fd9\u662f\u4e24\u79cd\u4e0d\u540c\u7684\u4f7f\u7528\u3002\u6240\u4ee5\u6211\u8ba4\u4e3a mysql \u7684 rr \u7ea7\u522b\u662f\u89e3\u51b3\u4e86\u5e7b\u8bfb\u7684\u3002<br \/>https:\/\/github.com\/Yhzhtk\/note\/issues\/42                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654256\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : gotonull <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @mahone3297 \u8c22\u8c22\uff0c\u8fd9\u5c31\u53bb\u5b66\u4e60\u5b66\u4e60                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654257\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : dxyhymn <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u89e3\u51b3\u4e86\uff0c\u63a8\u8350\u53bb\u770b\u4e66\uff0c\u770b\u5b8c\u4f60\u5c31\u77e5\u9053\u4e86\uff0c\u800c\u4e14\u5f88\u900f\u5f7b\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654258\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : JasonLaw <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @huntcool001 #12 +1\uff0c\u5e76\u6ca1\u6709\u5b8c\u5168\u89e3\u51b3\u3002<\/p>\n<p>https:\/\/dev.mysql.com\/doc\/refman\/8.0\/en\/innodb-consistent-read.html \u4e2d\u4e5f\u63cf\u8ff0\u4e86\u8fd9\u4e2a\u95ee\u9898\u3002\u5728\u201cThe snapshot of the database state applies to SELECT statements within a transaction, not necessarily to DML statements.\u201d\u8fd9\u6bb5\u91cc\u9762\u3002                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654259\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : JasonLaw <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u5176\u5b9e\u6211\u4e0d\u592a\u660e\u767d\u4e3a\u4ec0\u4e48\u8fd9\u4e48\u591a\u4eba\u90fd\u662f\u5728\u8bf4 gap locking\uff0c\u6587\u6863\u91cc\u660e\u660e\u8bf4\u7684\u662f next-key locking \u3002<\/p>\n<p>https:\/\/dev.mysql.com\/doc\/refman\/8.0\/en\/innodb-next-key-locking.html \u4e2d\u8bf4\u4e86\u201cTo prevent phantoms, InnoDB uses an algorithm called next-key locking that combines index-row locking with gap locking.\u201d\uff0c\u5f88\u660e\u663e\uff0c\u5355\u7eaf\u7684 gap locking \u662f\u4e0d\u80fd\u963b\u6b62\u5e7b\u8bfb\u7684\uff0cindex-row locking \u52a0\u4e0a gap locking \u624d\u80fd\u591f\u89e3\u51b3\u3002                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654260\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : JasonLaw <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @pangleon #19 \u201c\u95f4\u9699\u9501\u53c8\u4f1a\u5f15\u8d77\u522b\u7684 BUG\u201d\uff0c\u53ef\u4ee5\u8be6\u7ec6\u8bf4\u660e\u4e00\u4e0b\u662f\u4ec0\u4e48 bug \u5417\uff1f\u8c22\u8c22\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654261\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : pws22 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u6ca1\u6709\u5b8c\u5168\u89e3\u51b3                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654262\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : daimubai <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u786e\u5b9e\u4f7f\u7528\u7684\u662f Next-lock-key \u7b97\u6cd5\uff0c\u5b83\u5305\u542b\u4e86 row lock \u548c gap lock\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u662f\u89e3\u51b3\u4e86\u5e7b\u8bfb\u7684\uff0c\u4e0d\u8fc7\u4e0d\u80fd\u5b8c\u5168\u907f\u514d\u5427\uff0c\u56e0\u4e3a\u53ea\u4f1a\u9501\u95f4\u9699\uff0c\u5982\u679c\u4e0d\u5728\u95f4\u9699\u6dfb\u52a0\u4e5f\u53ef\u4ee5\u6dfb\u52a0\u6210\u529f\u5427                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654263\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : daimubai <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             MVCC \u5e76\u6ca1\u6709\u89e3\u51b3\u5e7b\u8bfb\uff0c\u800c\u662f\u89e3\u51b3\u4e86 RC \u4e0b\u7684\u810f\u8bfb\u548c RR \u4e0b\u7684\u4e0d\u53ef\u91cd\u590d\u8bfb                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654264\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : wentaoliang <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u9ed8\u8ba4\u6ca1\u6709\u5f00\u542f\u907f\u514d\u5e7b\u8bfb\uff0c\u4f46\u662f\u53ef\u4ee5\u901a\u8fc7 for update \u6216\u8005 share mode \u6765\u5f00\u542f\u907f\u514d\u5e7b\u8bfb\u3002\u539f\u7406\u4e0a\u4ee5\u53ca\u8bf4\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654265\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : freelancher <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u8bb2\u771f\u3002\u6211\u770b\u539f\u7406\u7684\u65f6\u5019\u5c31\u89e3\u51b3\u4e86\u3002\u8fd9\u4e2a\u662f\u5728\u9694\u79bb\u7279\u6027\u91cc\u9762\u3002\u81ea\u5df1\u53bb\u770b\u4e00\u4e0b\u5427\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2654266\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : leapV3 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u53ef\u91cd\u590d\u8bfb\u6ca1\u6709\u89e3\u51b3\uff0c\u9700\u8981\u52a0\u95f4\u9699\u9501                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li>\n","protected":false},"excerpt":{"rendered":"<p>MySQL \u53ef\u91cd\u590d\u8bfb\u9694\u79bb\u7ea7\u522b\u4e0b\u662f\u5426&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/139938"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=139938"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/139938\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=139938"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=139938"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=139938"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}