{"id":10008245,"date":"2023-09-07T20:58:24","date_gmt":"2023-09-07T12:58:24","guid":{"rendered":"https:\/\/blog.itmax.cn\/?p=10008245"},"modified":"2023-09-07T20:58:24","modified_gmt":"2023-09-07T12:58:24","slug":"%e5%bc%b9%e6%80%a7%e6%95%b0%e6%8d%ae%e5%ba%93%e8%bf%9e%e6%8e%a5%e6%b1%a0%e6%8e%a2%e6%b4%bb%e7%ad%96%e7%95%a5%e8%b0%83%e7%a0%94%e4%ba%8c-druid-%e4%ba%ac%e4%b8%9c%e4%ba%91%e6%8a%80","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10008245","title":{"rendered":"\u5f39\u6027\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u63a2\u6d3b\u7b56\u7565\u8c03\u7814(\u4e8c)\u2014\u2014Druid | \u4eac\u4e1c\u4e91\u6280\u672f\u56e2\u961f"},"content":{"rendered":"<h2>\u524d\u8a00<\/h2>\n<p>\u5728<a target=\"_blank\" href=\"https:\/\/segmentfault.com\/a\/1190000044186640\" rel=\"noopener noreferrer\">\u4e0a\u4e00\u7bc7\u6587\u7ae0<\/a>\u4e2d\uff0c\u6211\u4eec\u4ecb\u7ecd\u4e86\u5f39\u6027\u6570\u636e\u5e93\u8fde\u63a5\u5931\u6548\u7684\u80cc\u666f\uff0c\u5e76\u63a2\u8ba8\u4e86HikariCP\u8fde\u63a5\u6c60\u63a2\u6d3b\u7b56\u7565\u7684\u76f8\u5173\u5185\u5bb9\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u4f1a\u7ee7\u7eed\u63a2\u8ba8\u53e6\u4e00\u4e2a\u7ebf\u4e0a\u5e38\u7528\u7684\u8fde\u63a5\u6c60\u2014\u2014Druid\uff0c\u5e76\u4e3a\u60a8\u4ecb\u7ecd\u5982\u4f55\u5728\u4f7f\u7528Druid\u65f6\u5b9e\u73b0\u6700\u4f73\u5b9e\u8df5\u7684\u5f39\u6027\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u63a2\u6d3b\u7b56\u7565\u3002<\/p>\n<h2>Druid<\/h2>\n<p>Druid\u7684\u7248\u672c\u8fed\u4ee3\u66f4\u65b0\u6bd4\u8f83\u5feb\uff0c\u540c\u65f6\u63a2\u6d3b\u914d\u7f6e\u7684\u53c2\u6570\u4e5f\u6bd4\u8f83\u591a\uff0c\u8fd9\u5bfc\u81f4\u5373\u4f7f\u662f\u76f8\u540c\u7684\u53c2\u6570\u5728\u4e0d\u540c\u7684\u7248\u672c\u4e2d\u8fbe\u5230\u7684\u6548\u679c\u4e5f\u53ef\u80fd\u4e0d\u4e00\u6837\u3002\u4f46\u4e0e\u63a2\u6d3b\u76f8\u5173\u7684\u903b\u8f91\u5b9e\u73b0\u53ea\u5b58\u5728\u6e90\u7801\u91cc\u7684\u4e24\u4e2a\u51fd\u6570\u91cc\uff0c \u6211\u4eec\u5148\u5217\u4e3e\u4e00\u4e0b\u8ddfDruid\u63a2\u6d3b\u76f8\u5173\u7684\u53c2\u6570\uff0c\u5728\u5177\u4f53\u770b\u4e00\u4e0b\u6e90\u7801\u7684\u5b9e\u73b0\u5bf9\u8fd9\u4e9b\u53c2\u6570\u7684\u4f7f\u7528\u3002\u65e5\u540e\u6211\u4eec\u5728\u5f00\u53d1\u4e2d\u9047\u5230\u914d\u7f6e\u63a2\u6d3b\u4e0d\u751f\u6548\u7684\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u770b\u4e00\u4e0b\u5bf9\u5e94\u7248\u672c\u6e90\u7801\u6765\u5224\u65ad\u81ea\u5df1\u7684\u63a2\u6d3b\u662f\u5426\u914d\u7f6e\u6b63\u786e\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u4e0eDruid\u63a2\u6d3b\u76f8\u5173\u7684\u53c2\u6570\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th>\u53c2\u6570\u540d\u79f0<\/th>\n<th>\u8bf4\u660e<\/th>\n<th>\u9ed8\u8ba4\u503c<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>initialSize<\/td>\n<td>\u521d\u59cb\u5316\u65f6\u5efa\u7acb\u7269\u7406\u8fde\u63a5\u7684\u4e2a\u6570\u3002\u521d\u59cb\u5316\u53d1\u751f\u5728\u663e\u793a\u8c03\u7528init\u65b9\u6cd5\uff0c\u6216\u8005\u7b2c\u4e00\u6b21getConnection\u65f6\u3002<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td>minIdle<\/td>\n<td>\u6700\u5c0f\u8fde\u63a5\u6c60\u6570\u91cf\u3002<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td>maxActive<\/td>\n<td>\u6700\u5927\u8fde\u63a5\u6c60\u6570\u91cf\u3002<\/td>\n<td>8<\/td>\n<\/tr>\n<tr>\n<td>testOnBorrow<\/td>\n<td>\u7533\u8bf7\u8fde\u63a5\u65f6\u6267\u884cvalidationQuery\u914d\u7f6e\u7684SQL\u68c0\u6d4b\u8fde\u63a5\u662f\u5426\u6709\u6548\uff0c\u505a\u4e86\u8fd9\u4e2a\u914d\u7f6e\u4f1a\u964d\u4f4e\u6027\u80fd\u3002<\/td>\n<td>false<\/td>\n<\/tr>\n<tr>\n<td>testOnReturn<\/td>\n<td>\u5f52\u8fd8\u8fde\u63a5\u65f6\u6267\u884cvalidationQuery\u68c0\u6d4b\u8fde\u63a5\u662f\u5426\u6709\u6548\uff0c\u505a\u4e86\u8fd9\u4e2a\u914d\u7f6e\u4f1a\u964d\u4f4e\u6027\u80fd\u3002<\/td>\n<td>false<\/td>\n<\/tr>\n<tr>\n<td>testWhileIdle<\/td>\n<td>\u5efa\u8bae\u914d\u7f6e\u4e3atrue\uff0c\u4e0d\u5f71\u54cd\u6027\u80fd\uff0c\u5e76\u4e14\u4fdd\u8bc1\u5b89\u5168\u6027\u3002\u5728\u8fde\u63a5\u6c60\u4e2d\u7533\u8bf7\u8fde\u63a5\u7684\u65f6\u5019\u68c0\u6d4b\uff0c\u5982\u679c\u7a7a\u95f2\u65f6\u95f4\u5927\u4e8etimeBetweenEvictionRunsMillis\uff0c\u6267\u884cvalidationQuery\u68c0\u6d4b\u8fde\u63a5\u662f\u5426\u6709\u6548\u3002<\/td>\n<td>\u5927\u591a\u6570\u7248\u672c\u4e3aTrue<\/td>\n<\/tr>\n<tr>\n<td>timeBetweenEvictionRunsMillis<\/td>\n<td>1) Destroy\u7ebf\u7a0b\u4f1a\u68c0\u6d4b\u8fde\u63a5\u7684\u95f4\u9694\u65f6\u95f4\uff0c\u6bcf\u9694\u8fd9\u4e2a\u503c\u7684\u65f6\u95f4\u5c31\u4f1a\u6267\u884c\u4e00\u6b21DestroyTask\u3002 2) testWhileIdle\u7684\u5224\u65ad\u4f9d\u636e\uff0c\u8be6\u7ec6\u770btestWhileIdle\u5c5e\u6027\u7684\u8bf4\u660e\u3002<\/td>\n<td>\u5927\u591a\u6570\u7248\u672c\u662f1\u5206\u949f<\/td>\n<\/tr>\n<tr>\n<td>keepAlive<\/td>\n<td>\u8fde\u63a5\u6c60\u4e2d\u7684minIdle\u6570\u91cf\u4ee5\u5185\u7684\u8fde\u63a5\uff0c\u7a7a\u95f2\u65f6\u95f4\u8d85\u8fc7minEvictableIdleTimeMillis\uff0c\u5219\u4f1a\u6267\u884c\u63a2\u6d3b\u64cd\u4f5c\u6b64\u53c2\u6570\u57281.0.28\u4ee5\u4e0a\u7684\u7248\u672c\u624d\u652f\u6301 \u8be6\u7ec6\u8bf4\u660e\u53c2\u8003\u5b98\u65b9\u6587\u6863\u3002<\/td>\n<td>false<\/td>\n<\/tr>\n<tr>\n<td>keepAliveBetweenTimeMillis<\/td>\n<td>\u914d\u5408keepAlive\u4f7f\u7528\u5728\u4f4e\u7248\u672c\u4e0d\u652f\u6301\uff0c\u5982\u679c\u7a7a\u95f2\u65f6\u95f4\u5c0f\u4e8etimeBetweenEvictionRunsMillis\u4f46\u5927\u4e8ekeepAliveBetweenTimeMillis\u6254\u6267\u884c\u63a2\u6d3b\u64cd\u4f5c<\/td>\n<td>\u5927\u591a\u6570\u7248\u672c\u662f2\u5206\u949f<\/td>\n<\/tr>\n<tr>\n<td>validationQuery<\/td>\n<td>\u7528\u6765\u68c0\u6d4b\u8fde\u63a5\u662f\u5426\u6709\u6548\u7684sql\uff0c\u8981\u6c42\u662f\u4e00\u4e2a\u67e5\u8be2\u8bed\u53e5\u3002<\/td>\n<td>select 1<\/td>\n<\/tr>\n<tr>\n<td>validationQueryTimeout<\/td>\n<td>\u5355\u4f4d\uff1a\u79d2\uff0c\u68c0\u6d4b\u8fde\u63a5\u662f\u5426\u6709\u6548\u7684\u8d85\u65f6\u65f6\u95f4\u3002\u5e95\u5c42\u8c03\u7528jdbc Statement\u5bf9\u8c61\u7684void setQueryTimeout(int seconds)\u65b9\u6cd5<\/td>\n<td>\u00a0<\/td>\n<\/tr>\n<tr>\n<td>minEvictableIdleTimeMillis<\/td>\n<td>\u8fde\u63a5\u7a7a\u95f2\u65f6\u95f4\u5927\u4e8e\u8be5\u503c\u65f6\u5173\u95ed\u7a7a\u95f2\u8fde\u63a5\u5927\u4e8eminIdle\u7684\u8fde\u63a5\uff0c\u7c7b\u4f3chikaricp\u7684idleTimeout<\/td>\n<td>30\u5206\u949f<\/td>\n<\/tr>\n<tr>\n<td>maxEvictableIdleTimeMillis<\/td>\n<td>\u8fde\u63a5\u7a7a\u95f2\u65f6\u95f4\u5927\u4e8e\u8be5\u503c\u65f6\u4e0d\u7ba1minIdle\u90fd\u5173\u95ed\u8be5\u8fde\u63a5\uff0c\u7c7b\u4f3chikaricp\u7684maxlifetime\uff08\u4f4e\u7248\u672c\u4e0d\u652f\u6301\uff09<\/td>\n<td>7\u5c0f\u65f6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Druid\u7684\u63a2\u6d3b\u4e3b\u8981\u6709\u4ee5\u4e0b\u4e24\u4e2a\u51fd\u6570\u6765\u5b9e\u73b0\uff1a<\/p>\n<ul>\n<li>com.alibaba.druid.pool.DruidDataSource#getConnectionDirect<\/li>\n<\/ul>\n<p>getConnectionDirect\u662f\u6bcf\u6b21\u4ece\u8fde\u63a5\u6c60\u4e2d\u53d6\u8fde\u63a5\u65f6\u4f1a\u88ab\u8c03\u7528\u7684\u51fd\u6570\u3002\u6211\u4eec\u4ece\u4e0b\u9762\u7684\u4ee3\u7801\u4e2d\u53ef\u4ee5\u770b\u51fa\uff0c\u5982\u679ctestOnBorrow\u4e3atrue\uff0c\u5219\u6bcf\u6b21\u83b7\u53d6\u8fde\u63a5\u4e4b\u524d\u90fd\u4f1a\u68c0\u6d4b\u8fde\u63a5\u662f\u5426\u6709\u6548\u3002\u5982\u679ctestOnBorrow\u4e3afalse\u4e14testWhileIdle\u4e3atrue\uff0c\u5219\u9700\u8981\u5224\u65ad\u8fde\u63a5\u7684\u7a7a\u95f2\u65f6\u95f4\u662f\u5426\u8d85\u8fc7timeBetweenEvictionRunsMillis\u8bbe\u7f6e\u7684\u503c\uff0c\u5982\u679c\u8d85\u8fc7\u5219\u8fdb\u884c\u63a2\u6d3b\u68c0\u6d4b\u3002\u5931\u6548\u7684\u8fde\u63a5\u4f1a\u88ab\u4e22\u5f03\uff0c\u5e76\u4e14\u4f1a\u8865\u5145\u5230\u8fde\u63a5\u6c60\u7684minIdle\u6570\u91cf\u3002timeBetweenEvictionRunsMillis\u5728\u5927\u591a\u6570\u7248\u672c\u4e2d\u7684\u9ed8\u8ba4\u503c\u4e3a1\u5206\u949f\u3002\u53ea\u8981\u8fd9\u4e2a\u503c\u8bbe\u7f6e\u7684\u65f6\u95f4\u5c0f\u4e8e\u5341\u5206\u949f\uff0c\u5e76\u4e14\u4fdd\u8bc1testWhileIdle\u5f00\u542f\uff0c\u5c31\u80fd\u4fdd\u8bc1\u62ff\u4e0d\u5230\u7f51\u5173\u5173\u95ed\u7684\u5931\u6548\u8fde\u63a5\u3002<\/p>\n<p>\u5728\u4e0d\u652f\u6301keepalive\u7684\u4f4e\u7248\u672c\u4e2d\uff0c\u53ea\u80fd\u4f9d\u9760testOnBorrow\u6216testWhileIdle\u6765\u8fdb\u884c\u63a2\u6d3b\u3002\u5efa\u8bae\u914d\u7f6etestWhileIdle\u6765\u8fdb\u884c\u63a2\u6d3b\u3002\u5728\u9ad8\u5e76\u53d1\u7684\u573a\u666f\u4e0b\uff0c\u8fd9\u79cd\u65b9\u5f0f\u7684\u6027\u80fd\u6d88\u8017\u4f1a\u66f4\u5c0f\u4e00\u4e9b\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044191026\" alt=\"\" title=\"\"><\/p>\n<ul>\n<li>com.alibaba.druid.pool.DruidDataSource#shrink(boolean, boolean)<\/li>\n<\/ul>\n<p>\u5728\u4e0b\u9762\u7684\u4ee3\u7801\u4e2d\u6211\u4eec\u53ef\u4ee5\u770b\u51fa\uff0cshrink\u65b9\u6cd5\u662f\u5728DestroyTask\u7ebf\u7a0b\u7684run\u65b9\u6cd5\u4e2d\u8c03\u7528\u7684\uff0c\u7528\u4e8e\u9500\u6bc1\u8fde\u63a5\u6c60\u4e2d\u7684\u8fde\u63a5\u3002\u5982\u679ctimeBetweenEvictionRunsMillis\u5927\u4e8e0\uff0c\u5219\u6bcf\u9694\u8fd9\u4e2a\u65f6\u95f4\u95f4\u9694\u5c31\u4f1a\u8c03\u7528destroyTask.run(boolean, boolean)\u65b9\u6cd5\uff0c\u5373\u6267\u884cshrink\u65b9\u6cd5\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044191027\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044191028\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u4ece\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\u53ef\u4ee5\u770b\u51fa\uff0cshrink\u65b9\u6cd5\u4f1a\u4f7f\u7528keepAlive\u53c2\u6570\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5728\u4e0d\u540c\u7248\u672c\u7684Druid\u4e2d\uff0ckeepAlive\u53c2\u6570\u7684\u652f\u6301\u548c\u5b9e\u73b0\u903b\u8f91\u53ef\u80fd\u4e0d\u540c\u3002\u5b98\u65b9\u5efa\u8bae\u5728\u4f7f\u7528keepAlive\u53c2\u6570\u65f6\uff0c\u5e94\u8be5\u4f7f\u75281.1.21\u4ee5\u4e0a\u7684\u7248\u672c\u3002\u5c3d\u7ba1\u5b98\u65b9\u6587\u6863\u4e2d\u8bf4\u660e\u4e86\u7a7a\u95f2\u65f6\u95f4\u8d85\u8fc7minEvictableIdleTimeMillis\uff0c\u5c31\u4f1a\u6267\u884c\u63a2\u6d3b\u64cd\u4f5c\uff0c\u4f46\u662f\u5728\u9ad8\u7248\u672c\u4e2d\uff0c\u8fd9\u4e2a\u63a2\u6d3b\u64cd\u4f5c\u7684\u6267\u884c\u65f6\u95f4\u4e5f\u53d7\u5230\u4e86keepAliveBetweenTimeMillis\u53c2\u6570\u7684\u5f71\u54cd\u3002\u56e0\u6b64\uff0c\u5728\u9ad8\u7248\u672c\u4e2d\uff0c\u5982\u679c\u60f3\u8981\u6b63\u786e\u5730\u4f7f\u7528keepAlive\u53c2\u6570\uff0c\u5c31\u9700\u8981\u4e86\u89e3\u5176\u5728\u5177\u4f53\u7248\u672c\u4e2d\u7684\u5b9e\u73b0\u903b\u8f91\u3002<\/p>\n<p>\u4e0b\u9762\u4ee3\u7801\u662f1.1.10\u548c1.1.21\u7248\u672c\u4e2d\u5173\u4e8eshrink\u65b9\u6cd5\u7684\u6e90\u7801\u5bf9\u6bd4\uff1a<\/p>\n<p>\u9996\u5148\u770b\u4e00\u4e0b1.1.10\u7248\u672c\u7684\u6e90\u7801\uff0c\u5b83\u9996\u5148\u4f1a\u5224\u65ad\u8fde\u63a5\u7a7a\u95f2\u65f6\u95f4\u662f\u5426\u5927\u4e8eminEvictableIdleTimeMillis\uff0c\u5982\u679c\u662f\uff0c\u5219\u63a5\u4e0b\u6765\u8fdb\u884c\u7b2c\u4e8c\u6b65\u7684\u5224\u65ad\uff1a\u662f\u5426\u662f\u591a\u4e8eminIdle\u7684\u7a7a\u95f2\u8fde\u63a5\u3002\u5982\u679c\u662f\uff0c\u5c31\u5c06\u8fd9\u4e9b\u8fde\u63a5\u52a0\u5165\u5230\u9a71\u9010\u8fde\u63a5\u7684\u6570\u7ec4\u4e2d\uff0c\u4ee5\u4fbf\u8fdb\u884c\u540e\u7eed\u7684\u9a71\u9010\u64cd\u4f5c\u3002\u5982\u679c\u4e0d\u662f\uff0c\u5c31\u518d\u6b21\u5224\u65ad\u8fde\u63a5\u7a7a\u95f2\u65f6\u95f4\u662f\u5426\u5927\u4e8emaxEvictableIdleTimeMillis\uff0c\u5982\u679c\u662f\uff0c\u5219\u5c06\u8fd9\u4e9b\u8fde\u63a5\u52a0\u5165\u5230\u9a71\u9010\u8fde\u63a5\u7684\u6570\u7ec4\u4e2d\u3002\u5982\u679c\u4e5f\u4e0d\u662f\uff0c\u5219\u8fdb\u884c\u6700\u540e\u7684\u5224\u65ad\uff1a\u662f\u5426\u5f00\u542f\u4e86keepAlive\u914d\u7f6e\u3002\u5982\u679c\u5f00\u542f\u4e86\uff0c\u5c31\u5c06\u8fd9\u4e9b\u8fde\u63a5\u52a0\u5165\u5230\u4fdd\u6d3b\u8fde\u63a5\u6570\u7ec4\u4e2d\uff0c\u4ee5\u8fdb\u884c\u540e\u7eed\u7684\u63a2\u6d3b\u64cd\u4f5c\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044191029\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u57281.1.21\u7248\u672c\u4e2d\uff0cshrink\u65b9\u6cd5\u7684\u603b\u4f53\u903b\u8f91\u4e0e1.1.10\u7248\u672c\u7c7b\u4f3c\uff0c\u4f46\u662f\u65b0\u589e\u4e86\u4e00\u4e2a\u540d\u4e3akeepAliveBetweenTimeMillis\u7684\u53c2\u6570\u3002\u8fd9\u4e2a\u53c2\u6570\u51b3\u5b9a\u4e86\u4f7f\u7528keepAlive\u8fdb\u884c\u63a2\u6d3b\u7684\u65f6\u95f4\u95f4\u9694\uff0c\u5176\u9ed8\u8ba4\u503c\u4e3a2\u5206\u949f\uff0ckeepalive\u5f00\u542f\u4e14\u7a7a\u95f2\u65f6\u95f4\u5927\u4e8e\u8fd9\u4e2a\u503c\u4f1a\u8fdb\u884c\u63a2\u6d3b\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044191031\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u53e6\u4e00\u4e2a\u4e0d\u540c\u70b9\u662f\uff0c\u5728\u8fdb\u884c\u63a2\u6d3b\u64cd\u4f5c\u65f6\uff0c1.1.10\u7248\u672c\u4ec5\u4f1a\u5173\u95ed\u65e0\u6548\u7684\u8fde\u63a5\uff0c\u4f461.1.21\u7248\u672c\u5219\u66f4\u8fdb\u4e00\u6b65\uff0c\u9664\u4e86\u5173\u95ed\u65e0\u6548\u8fde\u63a5\u5916\uff0c\u8fd8\u4f1a\u81ea\u52a8\u6dfb\u52a0\u8fde\u63a5\u4ee5\u8fbe\u5230minIdle\u7684\u6700\u5c0f\u8fde\u63a5\u6570\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044191032\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>1.1.10 1.1.21<\/p>\n<p>\u603b\u7ed3\uff0cdruid\u7684\u63a2\u6d3b\u53c2\u6570\u57281.0.28\u7248\u672c\u4e4b\u524d\u6ca1\u6709\u5b9a\u65f6\u7684\u63a2\u6d3b\u529f\u80fd\u53ea\u80fd\u5728\u6bcf\u6b21\u62ff\u5230\u8fde\u63a5\u524d\u8fdb\u884c\u68c0\u6d4b\u662f\u5426\u6709\u6548\uff0c\u5efa\u8bae\u914d\u7f6etestWhileIdle\u4e3atrue\u5728\u9ad8\u5e76\u53d1\u60c5\u51b5\u4e0b\u4e0d\u4f1a\u592a\u5f71\u54cd\u6027\u80fd\uff0c\u5982\u679c\u5bf9\u53ef\u7528\u6027\u8981\u6c42\u9ad8\u7684\u53ef\u4ee5\u5f00\u542ftestOnBorrow\uff0c\u4ee5\u5728\u6bcf\u6b21\u83b7\u53d6\u8fde\u63a5\u65f6\u68c0\u6d4b\u8fde\u63a5\u7684\u6709\u6548\u6027\u3002\u5728\u9ad8\u7248\u672c\u4e2d\u53ef\u4ee5\u7528keepAlive\u53c2\u6570\u5bf9\u8fde\u63a5\u8fdb\u884c\u4fdd\u6d3b\u3002\u9488\u5bf9\u7ebf\u4e0a\u4f7f\u7528Druid\u8fde\u63a5\u6c60\u7684\u5e94\u7528\u5efa\u8bae\u4f7f\u7528\u652f\u6301keepAlive\u76841.1.21\u6216\u8005\u66f4\u9ad8\u7248\u672c\u3002<\/p>\n<h2>JED\u914d\u7f6e\u6a21\u7248\uff1a<\/h2>\n<h4>Druid1.1.10<\/h4>\n<pre><code>&lt;propertyname=&quot;testWhileIdle&quot;value=&quot;true&quot;\/&gt;    \n&lt;propertyname=&quot;validationQuery&quot;value=&quot;SELECT 1&quot;\/&gt;    \n&lt;propertyname=&quot;timeBetweenEvictionRunsMillis&quot;value=&quot;30000&quot;\/&gt;    \n&lt;propertyname=&quot;minEvictableIdleTimeMillis&quot;value=&quot;300000&quot;\/&gt;\n&lt;propertyname=&quot;keepAlive&quot;value=true\/&gt;\n<\/code><\/pre>\n<p>\u6b64\u7248\u672c\u652f\u6301keepAlive\u53ef\u4ee5\u914d\u7f6eminEvictableIdleTimeMillis\u65f6\u95f4\u5c0f\u4e8e10\u5206\u949f\uff0c\u80fd\u591f\u9ad8\u6548\u7684\u8fdb\u884c\u63a2\u6d3b\u9632\u6b62\u7f51\u5173\u5173\u95ed\u8fde\u63a5\u3002<\/p>\n<h4>Druid1.1.9<\/h4>\n<p>\u540c1.1.10<\/p>\n<h4>Druid1.0.9<\/h4>\n<pre><code>&lt;propertyname=&quot;testWhileIdle&quot;value=&quot;true&quot;\/&gt;    \n&lt;propertyname=&quot;validationQuery&quot;value=&quot;SELECT 1&quot;\/&gt;    \n&lt;propertyname=&quot;timeBetweenEvictionRunsMillis&quot;value=&quot;30000&quot;\/&gt;    \n&lt;propertyname=&quot;minEvictableIdleTimeMillis&quot;value=&quot;300000&quot;\/&gt;\n<\/code><\/pre>\n<p>\u6b64\u7248\u672c\u4e0d\u652f\u6301keepAlive\u53ea\u80fd\u5728\u83b7\u53d6\u8fde\u63a5\u5bf9\u8c61\u7684\u65f6\u5019\u68c0\u6d4b\uff0c\u5bf9\u53ef\u7528\u6027\u9ad8\u7684\u4e5f\u53ef\u4ee5\u5f00\u542ftestOnBorrow\u3002<\/p>\n<blockquote>\n<p>\u4f5c\u8005\uff1a\u4eac\u4e1c\u96f6\u552e \u738b\u96f7\u946b<\/p>\n<p>\u6765\u6e90\uff1a\u4eac\u4e1c\u4e91\u5f00\u53d1\u8005\u793e\u533a \u8f6c\u8f7d\u8bf7\u6ce8\u660e\u6765\u6e90<\/p>\n<\/blockquote>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000044191023\">https:\/\/segmentfault.com\/a\/1190000044191023<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u524d\u8a00 \u5728\u4e0a\u4e00\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u4ecb\u7ecd\u4e86\u5f39\u6027\u6570\u636e\u5e93\u8fde\u63a5\u5931\u6548\u7684\u80cc\u666f\uff0c\u5e76\u63a2\u8ba8\u4e86HikariCP\u8fde\u63a5\u6c60\u63a2\u6d3b\u7b56\u7565\u7684\u76f8\u5173\u5185\u5bb9\u3002\u5728 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-10008245","post","type-post","status-publish","format-standard","hentry","category-share"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10008245","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10008245"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10008245\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10008245"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10008245"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10008245"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}