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Could not get a resource from the pool 异常定位和解决
最近在服务中经常看到以下错误，进行下定位和问题解决分析： 2023-12-08 00:10:58.248 WARN [terra-sr-server,a9006fd27ccb81d0,a9006fd27ccb81d0,false] 52 [o-14009-exec-38] o.s.b.a.redis ......
如何写出漂亮代码 https://libin9ioak.blog.csdn.net/article/details/127749042
从代码的编写规范，格式的优化，设计原则和一些常见的代码优化的技巧等方面总结了45个小技巧： 1、规范命名命名是写代码中最频繁的操作，比如类、属性、方法、参数等。好的名字应当能遵循以下几点： 见名知意 比如需要定义一个变量需要来计数 int i = 0;1名称 i 没有任何的实际意义，没有体现出数量的 ......
logback error Logging system failed to initialize using configuration from 'null'
* [After upgrading the project from spring boot 2.3.4 to 2.7.0, build fail with a logback.xml · Issue #32025 · spring-projects/spring-boot · GitHub](h ......
dgl AttributeError: Can't get attribute 'DGLGraph' on <module 'dgl.heterograph' from '/home/user/anaconda3/envs/mymodel/lib/python3.7/site-packages/dgl/heterograph.py'>
由于服务器重装了系统，因此cuda版本和ubuntu系统版本也换了，不得不重装系统，导致以前可以正常运行的代码出了各种故障（注：现在的ubuntu版本是18.04，cuda版本是11.3） AttributeError: Can't get attribute 'DGLGraph' on <modu ......
js中Array.from方法
这个方法,主要用于将一个类似数组的东西变成为数组 一.将一个字符串转化伪数组 let str='helloWord' let arr =Array.from(str) console.log(arr) //输出 ['h', 'e', 'l', 'l', 'o', 'W', 'o', 'r', 'd' ......
ERROR: Could not find a version that satisfies the requirement basicsr== (from versions: none)
(py37_gan) C:\Users\Administrator>pip3 install basicsr==WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after ......
docker启动容器报错：Error response from daemon: driver failed programming external connectivity on endpoint
安装的docker启动报错如下： Error response from daemon: driver failed programming external connectivity on endpoint nacos (2b0f4edff8f640559af9626936d1b38d965302 ......
vscode报错Already included file name ‘xxx‘ differs from file name ‘xxx‘ only in casing的解决方法：
场景：我们创建了一个文件是小写开头的，又改成大写开头的。 比如： relationDemo.vue 改成 RelationDemo.vue 原因：缓存的判重逻辑是不区分大小写导致的。在这种情况下，vscode缓存中放的是relationDemo.vue，改了大小写后，vscode试图把Relatio ......
"firmwarepasswd": MacOS Firmware Password Management: CHECK and DELETE Macbook Pro Firmware Password from the command line.
Abaels-MacBook-Pro:~ abaelhe$ su Password: bash-3.2# firmwarepasswd -check Password Enabled: Yes bash-3.2# firmwarepasswd -delete Delete Firmware Pass ......
AIX Oracle 11.2.0.4打PSU crsconfig_lib.pm line 11821解决 (转自：https://blog.csdn.net/jwocnimabi/article/details/125440561)
1. GRID打补丁crsconfig_lib.pm line 11821 # 以root用户登录 # export USER=grid # 建议执行该命令，不执行该命令偶尔导致打补丁失败还会由于许多文件权限变化无法回滚。 # /u01/app/11.2/grid/OPatch/opatch aut ......
15.Please retell the parable of The Blind men and An Elephant. What is the moral of the parable? What can we learn from the parable when it comes to critical thinking?
Round 1: Retelling the Parable and Extracting the Moral Speaker 1 (Student A): Hey everyone! So, let's dive into the parable of "The Blind Men and the ......
Predicting gene expression from histone modifications with self-attention based neural networks and transfer learning
Predicting gene expression from histone modifications with self-attention based neural networks and transfer learning Yuchi Chen 1, Minzhu Xie 1, Jie ......
灵魂拷问std::enable_shared_from_this，揭秘实现原理
灵魂拷问std::enable_shared_from_this，揭秘实现原理 引言 在C++编程中，使用智能指针是一种安全管理对象生命周期的方式。std::shared_ptr是一种允许多个指针共享对象所有权的智能指针。然而，当一个对象需要获取对自身的shared_ptr时，传统的方法可能导致未定 ......
skywalking 部署安装 https://blog.csdn.net/swg321321/article/details/129704345
https://blog.csdn.net/swg321321/article/details/129704345 前言在分布式系统中会出现服务间的相互调用，且服务数量众多。一般会出现如下异常 请求出现异常，需要定位定位具体是哪个服务器发生异常，需要对这个请求链路一步一步调试才能确定那个服务出现异常 ......
hive执行sql报错 FAILED: Execution Error, return code 3 from org.apache.hadoop.hive.ql.exec.mr.MapredLocalTask
前言： 执行hive sql报错，sql逻辑是两个表左连接并将数据插入新的表中。 报错信息： [ERROR] 2023-12-05 15:49:49.165 +0800 - execute sql error: Error while processing statement: FAILED: Ex ......
Mysql: [HY000][1093] You can't specify target table 'dupes' for update in FROM clause
错误原因 在同一语句中。不能先SELECT出同一表的某些值，在Update这个表 实例 错误实例 DELETE FROM dupes WHERE id NOT IN (SELECT MIN(id) FROM dupes GROUP BY name) 正确实例 DELETE FROM dupes WH ......
Disconnected from the target VM, address: '127.0.0.1:5954', transport: 'sock
一直能正常运行的本地项目，在IDEA中突然跑不起来 解决步骤： 给application启动类的run方法加上try-catch 打印日志为Failed to determine a suitable driver class，说是数据源有问题 实则是IDEA抽风了 1.尝试删除idea缓存重启In ......
记Redux下载后，运行examples/todos时，报错Error: error:0308010C:digital envelope routines::unsupported 和 Failed to load config "react-app" to extend from.
1、Redux 下载 下载地址 git clone https://github.com/reactjs/redux.git 进入examples/todos，下载依赖： npm install 2、问题复现及解决 执行命令 npm run start 此时终端报错： Error: error:03 ......
1、ImportError: cannot import name 'soft_unicode' from 'markupsafe'解决；2、ImportError: cannot import name 'Callable' from 'traitlets' 解决
不知做了啥操作，spyder和jupyter同时打不开（我印象中啥也没做），出现闪了一下后没反应，不知道报错在哪里。 1、先解决spyder的报错：ImportError: cannot import name 'soft_unicode' from 'markupsafe' 于是我打开Anacon ......
redis集群压测报错Error from server: MOVED
## redis集群压测报错Error from server: MOVED ## 故障描述 redis7集群压测报错 ```sh Summary: throughput summary: 31250.00 requests per second latency summary (msec): av ......
python网络连接报错：ValueError("Unable to determine SOCKS version from %s" % proxy_url) ValueError: Unable to determine SOCKS version from socks://192.168.1.100:1080/
python应用proxy网络连接报错： return super().send(request, *args, **kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/devil/anaconda3/envs/pytorch/lib ......
关于解决vue报错"Problems loading reference 'https://schemastore.azurewebsites.net/schemas/json/package.json': Unable to load schema from...
打开setting时会看到有一条三角形的警告信息 看问题描述：无法从该网站加载 解决方法： 打开设置，找到扩展下的json项 设置之后可以在settings.json文件中看到新增加一项 "json.schemaDownload.enable": false 可以直接在界面上设置： "json.sc ......
ORA-01187 cannot read from file 201 because it failed verification tests..temp01
Description:We get this message in running the Upgrade Express 20-21 export (create_customer_data):ORA-01187: cannot read from file 201 because it fai ......
Linux 内核参数调整解析：深度优化数据库性能 转载:https://www.toutiao.com/article/7304950566709559843
系统内核参数配置文件：/etc/sysctl.conf 一、参数说明 1、关闭 IPv6 支持 net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 作用：关闭对 IPv6 的支持，减轻系统负担，提高安全性 ......
论文：Predicting Optical Water Quality Indicators from Remote Sensing Using Machine Learning Algorithms in Tropical Highlands of Ethiopia
水刊，中科院都没有收录。不属于sci。 吃一堑长一智，以后先看属于哪个期刊的。总是忘记。 期刊：Hydrology 浪费时间，啥也没有，没有创新点，就一点点的对比工作量。 “Predicting Optical Water Quality Indicators from Remote Sensing ......
mvn spring-boot:run启动项目时报: parse data from Nacos error 错误
spring boot 项目, 通过命令: mvn spring-boot:run 启动时, 在读取nacos配置时, 提示报错如下: c.a.c.n.c.NacosPropertySourceBuilder : parse data from Nacos error,dataId:applicat ......
Reference and inspiration from China's strategy for addressing water pollution issues in Africa
According to China's three line one permit measures, we believe that this has a certain reference value for water pollution issues in Africa. The "thr ......
报错 ImportError: cannot import name 'Celery' from partially initialized module 'celery'
# 目录结构问题 原来目录结构： 改为： 把check_result produce_task拿出来 ......
[952] Extract text from a PDF file (PyMuPDF | MuPDF | fitz)
Using PyMuPDF (MuPDF) First, we need to install the PyMuPDF library: pip install pymupdf Then, we can use the following code to extract text from a PD ......