MySQL存储优化实战:3步提升数据库读写性能
馃敟 寮€澶寸伒榄傛嫹闂細浣犵殑鏁版嵁搴撳崱鎴怭PT浜嗗悧锛?/h3>
"鏄庢槑鍔犱簡绱㈠紩锛屼负鍟ユ煡涓鍗曡5绉掞紵""鐢ㄦ埛閲忎竴涓婃潵锛岀郴缁熷氨鐤媯鎶ラ敊锛?鍝庡摕鍠傦紝杩欏満鏅槸涓嶆槸鐗瑰埆鐔熸倝锛熸垜璺熶綘璇村晩锛屾悶涓嶅ソ灏辨槸瀛樺偍浼樺寲娌″仛鍒颁綅锛佷粖澶╁挶浠氨鍞犲敔杩欎釜鏁戝懡鎶€鑳斤紝涓夋鎿嶄綔璁╀綘鐨凪ySQL鍘熷湴璧烽锛?/p>
馃殌 绗竴姝ワ細缁欐暟鎹簱"鐦﹁韩"鎵嶆槸鐜嬮亾
锛堢獊鐒舵媿澶ц吙锛夊搸瀵逛簡锛佷綘浠煡閬撳悧锛熲€?strong>鈥?0%鐨勬€ц兘闂閮芥潵鑷瓨鍌ㄧ粨鏋勮璁♀€?/strong>鈥嬶紒鍓嶉樀瀛愭湁涓數鍟嗗钩鍙帮紝200涓囪鍗曞氨鍗℃垚鐙楋紝浣犵寽鎬庝箞鐫€锛熶粬浠妸鎵€鏈夌敤鎴疯涓烘棩蹇楅兘濉炲湪璁㈠崟琛ㄩ噷锛?/p>
馃憠 鈥?strong>鈥嬫纭Э鍔库€?/strong>鈥嬶細
- 鈥?strong>鈥嬫媶琛ㄥぇ娉曗€?/strong>鈥嬶細涓昏〃鍙暀鏍稿績瀛楁锛堣鍗曞彿銆侀噾棰濄€佺姸鎬侊級
- 鈥?strong>鈥嬪喎鐑垎绂烩€?/strong>鈥嬶細涓変釜鏈堝墠鐨勮鍗曡浆瀛樺巻鍙茶〃
- 鈥?strong>鈥嬬鐢═EXT澶ф硶鈥?/strong>鈥嬶細鎶婂晢鍝佹弿杩板崟鐙瓨鏂囦欢绯荤粺
锛堝暘锛佹暡榛戞澘锛夎浣忓晩鍏勫紵浠紝琛ㄥ瓧娈佃秴杩?0涓氨瑕佽鎯曚簡锛?/li>
馃搳 妗堜緥瀵规瘮锛氭煇鐢靛晢骞冲彴浼樺寲鍓嶅悗
鎸囨爣 | 浼樺寲鍓?/th> | 浼樺寲鍚?/th> |
---|---|---|
鏌ヨ閫熷害 | 2.8绉?/td> | 0.12绉?/td> |
纾佺洏鍗犵敤 | 320GB | 87GB |
鏈€澶у苟鍙?/td> | 800 QPS | 3500 QPS |
馃洜锔?绗簩姝ワ細绱㈠紩涓嶆槸鐜勫锛佽浼氱畻璐?/h3>
锛堟尃澶达級鎴戝彂鐜板緢澶氭柊鎵嬬壒鍒埍涔卞缓绱㈠紩锛屽氨璺熶笉瑕侀挶浼肩殑銆備笂涓湀鏈変釜鍏勫紵锛岀粰鐢ㄦ埛琛ㄥ缓浜?5涓储寮曪紝缁撴灉鍐欏叆閫熷害鐩存帴鑵版柀锛?/p>
馃挕 鈥?strong>鈥嬮粍閲戞硶鍒欌€?/strong>鈥嬶細
- 鈥?strong>鈥嬭仈鍚堢储寮曞乏鍖归厤鍘熷垯鈥?/strong>鈥嬶細where鏉′欢椤哄簭瑕佷弗鏍煎榻?/li>
- 鈥?strong>鈥嬭鐩栫储寮曠粷鏉€鎶€鈥?/strong>鈥嬶細select瀛楁鍏ㄥ湪绱㈠紩閲?/li>
- 鈥?strong>鈥嬪墠缂€绱㈠紩濡欑敤鈥?/strong>鈥嬶細varchar(255)鍙彇鍓?0瀛楃
锛堢獊鐒朵弗鑲冿級娉ㄦ剰鍟婏紒姣忎釜绱㈠紩澧炲姞绾?0%鐨勫啓鍏ュ紑閿€锛岃繖涓处寰楃畻鏄庣櫧锛?/li>
鉂?鑷棶鑷瓟锛氫粈涔堟椂鍊欒鍒犵储寮曪紵
Q锛氱储寮曞浜嗕細鎬庢牱锛?br/> A锛氬氨璺熷閲屼笢瑗夸贡鏀句竴鏍凤紒鎵句笢瑗挎洿鎱㈣繕鍗犲湴鏂广€傚缓璁瘡鏈堝仛涓€娆$储寮曞仴搴锋鏌ワ紝鐢?code>sys.schema_unused_indexes鎻嚭闂茬疆绱㈠紩銆?/p>
馃挜 绗笁姝ワ細鍙傛暟璋冧紭灏卞儚寮€璺戣溅鎹㈡尅
锛堟媿妗屽瓙锛夎繖涓渶瀹规槗琚拷鐣ワ紒浣犵煡閬撻粯璁ら厤缃兘鎵涘灏戝苟鍙戝悧锛熸拺姝?00锛佹兂瑕佷竾绾у苟鍙戯紵寰楄繖涔堢帺锛?/p>
馃敡 鈥?strong>鈥嬪繀鏀瑰弬鏁版竻鍗曗€?/strong>鈥嬶細
ini澶嶅埗innodb_buffer_pool_size = 鐗╃悊鍐呭瓨鐨?span>70% innodb_flush_log_at_trx_commit = 2 sync_binlog = 1000
锛堢獊鐒跺帇浣庡0闊筹級鎮勬倓璇翠釜楠氭搷浣滐細鎶妑edolog鏂囦欢浠庨粯璁ょ殑48MB璋冨埌2GB锛屼簨鍔℃彁浜ら€熷害鑳藉揩3鍊嶏紒
馃尠 鐪熷疄缈昏溅鐜板満
鍘诲勾鍙?1鏈変釜骞冲彴娌℃敼max_connections
锛岀粨鏋滈浂鐐规祦閲忚繘鏉ョ洿鎺ヨ繛鎺ユ睜鐖嗙偢銆傚悗鏉ユ妸榛樿鐨?51鏀规垚2000锛岄厤鍚堢嚎绋嬫睜鎻掍欢鎵嶆墰浣忓帇鍔涖€?/p>
馃く 鐙瑙佽В锛歋SD涓嶆槸涓囪兘鑽紒
锛堢獊鐒舵縺鍔級鐜板湪寰堝浜鸿寰楃牳閽辨崲SSD灏辫兘瑙e喅涓€鍒囷紵澶ч敊鐗归敊锛佹垜浠疄娴嬭繃锛氬湪鏈紭鍖栫殑鏁版嵁搴撲笂锛孲SD鍙兘鎻愬崌绾?0%鎬ц兘锛岃€屼紭鍖栧瓨鍌ㄧ粨鏋?绱㈠紩鑳藉甫鏉?00%鎻愬崌锛?/p>
馃挕 鏈潵瓒嬪娍锛?br/> 浜戝師鐢熸暟鎹簱寮€濮嬫祦琛屾櫤鑳藉瓨鍌ㄥ紩鎿庯紝鍍忛樋閲屼簯PolarDB鐨勫瓨鍌ㄨ绠楀垎绂绘灦鏋勶紝鎹鏌ヨ鎬ц兘姣斾紶缁烳ySQL蹇?鍊?..锛堢獊鐒舵墦浣忥級鍝庤繖涓笅娆″崟鐙敔锛?/p>
馃幆 鏈€鍚庡彯鍢憋細浼樺寲鏄寔缁繃绋嬶紒
灏卞儚鍋ヨ韩瑕佸畾鏈熸祴浣撹剛鐜囷紝鏁版嵁搴撲篃寰楁瘡鏈堝仛鍋ュ悍妫€鏌ャ€傝浣忚繖涓夋澘鏂э細鐦﹁韩鈫掑缓绱㈠紩鈫掕皟鍙傛暟锛屽惊鐜線澶嶆墠鑳芥案钁嗛潚鏄ワ紒锛堢獊鐒舵兂璧蜂粈涔堬級瀵逛簡锛佷紭鍖栧墠鍗冧竾瑕佸浠藉晩锛佸埆闂垜鎬庝箞鐭ラ亾鐨?..
本文由嘻道妙招独家原创,未经允许,严禁转载