馃 浣犳槸涓嶆槸鎬婚亣鍒拌繖浜涚碂蹇冧簨锛?/h3>

"涓轰粈涔堟垜鐨勪簨鍔℃彁浜や簡鏁版嵁鍗存病鍙樺寲锛?
"鏁版嵁搴撹繛鎺ユ€庝箞鑾悕鍏跺灏辨弧浜嗭紵"
"绋嬪簭璺戠潃璺戠潃绐佺劧鍗℃锛屼竴鐪嬫棩蹇楀叏鏄疶imeout锛?

鍝庯紝杩欎簺闂鎴戝綋骞村彲閮借俯杩囧潙锛佷粖澶╁挶浠氨鍞犲敔SqlSession閭ｇ偣浜嬪効锛屾墜鎶婃墜鏁欎綘3鎷涘繀鏉€鎶€锛屼笓娌诲悇绉嶄笉鏈嶏紒

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馃洜锔?绗竴鎷涳細浜嬪姟寮€鍏宠鎷х揣

鈥?strong>鈥嬪叧閿棶棰橈細浜嬪姟鍒板簳寮€娌″紑锛熲€?/strong>鈥?br/> 寰堝灏忎紮浼翠互涓烘墽琛屼簡update灏辨槸浜嬪姟鎻愪氦锛岀粨鏋滄暟鎹牴鏈病鍏ュ簱锛佸叾瀹炲晩锛孧yBatis榛樿鏄€?strong>鈥嬫墜鍔ㄦ彁浜ゆā寮忊€?/strong>鈥嬶紝浣犲緱鍍忚繖鏍锋搷浣滐細

java澶嶅埗
try (SqlSession session = sqlSessionFactory.openSession()) {
    UserMapper mapper = session.getMapper(UserMapper.class);
    mapper.updateUser(user);  // 鍒拌繖閲岃繕娌℃彁浜わ紒
    session.commit();  // 杩欐墠鏄湡姝ｇ殑鎻愪氦
} 

鈥?strong>鈥嬸煉?閬垮潙鎸囧崡锛氣€?/strong>鈥?/p>

• 璁颁綇杩欎釜鍙ｈ瘈锛?寮€session蹇卌ommit锛屽紓甯稿氨rollback"
• 鐢╰ry-with-resources鑷姩鍏抽棴session锛屾瘮finally鍧楁洿浼橀泤
• 鎵归噺鎿嶄綔鏃朵竴瀹氳鐢ㄢ€?strong>鈥婤ATCH妯″紡鈥?/strong>鈥嬶紝鍚﹀垯1000鏉℃暟鎹彁浜?000娆★紝鏁版嵁搴撹鍝殑锛?/li>

馃攳 绗簩鎷涳細杩炴帴娉勬紡澶ц拷鍑?/h3>

鈥?strong>鈥嬬伒榄傛嫹闂細鎴戠殑鏁版嵁搴撹繛鎺ュ幓鍝簡锛熲€?/strong>鈥?br/> 涓婂懆鏈変釜鍝ヤ滑鍎垮崐澶滅粰鎴戞墦鐢佃瘽锛?鐢熶骇鐜鏁版嵁搴撹繛涓嶄笂浜嗭紒" 涓€鏌ユ棩蹇楋紝濂藉浼欙紝200涓繛鎺ュ叏琚崰婊★紒

鈥?strong>鈥嬸煏碉笍鈾傦笍 娉勬紡鐜板満杩樺師锛氣€?/strong>鈥?/p>

1. 鍦ㄥ惊鐜噷涓嶆柇鍒涘缓SqlSession鍗村繕璁板叧闂?/li>
2. 寮傚父鍒嗘敮娌℃湁鎵цsession.close()
3. 浣跨敤ThreadLocal缂撳瓨SqlSession锛岃姹傜粨鏉熸病娓呯悊

鈥?strong>鈥嬸煔?鑷娓呭崟锛氣€?/strong>鈥?/p>

• 鐢―ruid鐨勨€?strong>鈥媗eakDetection鈥?/strong>鈥嬪姛鑳斤紝瓒呰繃60绉掓病鍏抽棴鐨勮繛鎺ョ洿鎺ユ姤璀?/li>
• 鍦ㄦ棩蹇楅噷鎼?Connection opened"鍜?Connection closed"锛屾暟閲忚瀵瑰緱涓?/li>
• 閲嶇偣妫€鏌モ€?strong>鈥婱apper鎺ュ彛璋冪敤鈥?/strong>鈥嬪拰鈥?strong>鈥嬪姩鎬丼QL鈥?/strong>鈥嬭繖浜涢珮鍗卞尯鍩?/li>

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馃搳 绗笁鎷涳細鐩戞帶宸ュ叿鏉ュ厹搴?/h3>

鈥?strong>鈥嬬湡瀹炴渚嬶細鈥?/strong>鈥?br/> 鍘诲勾鎴戜滑绯荤粺姣忓ぉ涓嬪崍3鐐瑰噯鏃跺崱椤匡紝鏈€鍚庡彂鐜版槸鏌愪釜瀹氭椂浠诲姟娌″叧SqlSession銆傛€庝箞鐮达紵涓婄洃鎺э紒

鈥?strong>鈥嬸煍?涓変欢濂楅厤缃細鈥?/strong>鈥?/p>

yaml澶嶅埗
# Druid杩炴帴姹犻厤缃?/span>
spring:
  datasource:
    druid:
      filter:
        stat:
          log-slow-sql: true
          slow-sql-millis: 1000
      web-stat-filter:
        enabled: true
      stat-view-servlet:
        enabled: true

鈥?strong>鈥嬸煋?鐩戞帶鎸囨爣鐪嬭繖浜涳細鈥?/strong>鈥?/p>

1. 鈥?strong>鈥婣ctiveCount鈥?/strong>鈥嬶細褰撳墠娲昏穬杩炴帴鏁帮紙瓒呰繃80%瑕佽鎯曪級
2. 鈥?strong>鈥媁aitThreadCount鈥?/strong>鈥嬶細绛夊緟杩炴帴鐨勭嚎绋嬫暟锛堝ぇ浜?璇存槑璧勬簮绱у紶锛?/li>
3. 鈥?strong>鈥婻ollbackCount鈥?/strong>鈥嬶細浜嬪姟鍥炴粴娆℃暟锛堢獊鐒堕鍗囧繀鏈夊锛?/li>

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馃 鐙瑙佽В锛氳繖浜嬪緱涓婂崌鍒版祦绋嬬鎺?/h3>

浣犱互涓烘妧鏈柟妗堝氨涓囦簨澶у悏浜嗭紵Too young锛佹牴鎹垜浠洟闃熺殑琛€娉暀璁細

1. 鈥?strong>鈥嬩唬鐮佸鏌モ€?/strong>鈥嬪繀椤绘鏌ession.close()
2. 鈥?strong>鈥嬪帇鍔涙祴璇曗€?/strong>鈥嬫椂瑕佹ā鎷熻繛鎺ユ硠婕忓満鏅?/li>
3. 鏂颁汉鍏ヨ亴绗竴璇撅細鎵嬪啓SqlSession鎿嶄綔瑙勮寖
4. 姣忓懆鐪嬧€?strong>鈥嬭繛鎺ユ睜鐩戞帶鎶ュ憡鈥?/strong>鈥嬶紝姣旂湅KPI杩橀噸瑕?/li>

涓婃鐢ㄨ繖濂楃粍鍚堟嫵锛岀洿鎺ユ妸绾夸笂浜嬫晠鍑忓皯浜嗏€?strong>鈥?8%鈥?/strong>鈥嬶紒浣犲搧锛屼綘缁嗗搧锝?/p>

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馃幆 缁堟瀬鎻愰啋锛氬埆璁╁伐鍏疯儗閿咃紒

璇村埌搴曪紝SqlSession灏辨槸涓伐鍏蜂汉銆傚畠涓嶄細鑷繁浣滃锛岄棶棰橀兘鍑哄湪浣跨敤濮垮娍涓娿€傝浣忎笁涓叧閿瘝锛氣€?strong>鈥嬪強鏃舵彁浜ゃ€佺敤瀹屽氨鍏炽€佸叏绋嬬洃鎺р€?/strong>鈥嬨€傛妸杩欎笁鐐瑰埢鍦―NA閲岋紝淇濅綘浠庢楂樻灂鏃犲咖锛?/p>