版本号

~ 1.9.2

什么问题

~ 老是报错，错误原因是mongodb连接超时
error: MongoTimeoutError: Server selection timed out after 30000 ms
at selectServers (D:\yapi\vendors\node_modules\mongoose\node_modules\mongodb\lib\core\sdam\topology.js:771:21)
at NativeTopology.descriptionChangedHandler (D:\yapi\vendors\node_modules\mongoose\node_modules\mongodb\lib\core\sdam\topology.js:845:7)
at Object.onceWrapper (events.js:300:26)
at NativeTopology.emit (events.js:215:7)
at NativeTopology.serverUpdateHandler (D:\yapi\vendors\node_modules\mongoose\node_modules\mongodb\lib\core\sdam\topology.js:499:10)
at Server.emit (events.js:210:5)
at successHandler (D:\yapi\vendors\node_modules\mongoose\node_modules\mongodb\lib\core\sdam\monitoring.js:178:12)
at D:\yapi\vendors\node_modules\mongoose\node_modules\mongodb\lib\core\sdam\monitoring.js:211:9
at D:\yapi\vendors\node_modules\mongoose\node_modules\mongodb\lib\core\sdam\monitoring.js:169:16
at D:\yapi\vendors\node_modules\mongoose\node_modules\mongodb\lib\core\sdam\server.js:253:7
at D:\yapi\vendors\node_modules\mongoose\node_modules\mongodb\lib\core\connection\pool.js:420:18
at processTicksAndRejections (internal/process/task_queues.js:75:11) {
name: 'MongoTimeoutError',
[Symbol(mongoErrorContextSymbol)]: {}
}

还有这个错误
[ 2020-7-1 14:02:49 ] [ log ] -------------------------------------swaggerSyncUtils constructor-----------------------------------------------
[ 2020-7-1 14:02:49 ] [ log ] 服务已启动，请打开下面链接访问:
http://127.0.0.1:9090/
[ 2020-7-1 14:02:49 ] [ log ] mongodb load success...
[ 2020-7-1 14:18:29 ] [ error ] server instance pool was destroyed
[ 2020-7-1 14:20:54 ] [ error ] server instance pool was destroyed
[ 2020-7-1 14:20:59 ] [ error ] server instance pool was destroyed
[ 2020-7-1 15:48:41 ] [ error ] server instance pool was destroyed
[ 2020-7-1 15:48:51 ] [ error ] server instance pool was destroyed
[ 2020-7-1 16:32:53 ] [ log ] -------------------------------------swaggerSyncUtils constructor-----------------------------------------------
[ 2020-7-1 16:32:56 ] [ log ] 服务已启动，请打开下面链接访问:
http://127.0.0.1:9090/
[ 2020-7-1 16:32:56 ] [ log ] mongodb load success...
[ 2020-7-1 17:37:34 ] [ error ] Server selection timed out after 30000 ms

如何复现此问题

~ 正常使用一段时间后，会莫名的出现这个bug，频率在18min-35min

什么浏览器

~ 我这边使用的是谷歌

什么系统（Linux, Windows, macOS）

Windows