日志里打印： 10:39:48.962 [Druid-ConnectionPool-Create-1315749361] [] [] ERROR c.alibaba.druid.pool.DruidDataSource - create connection error com.mysql.jdbc ...
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数据库 时间：
2020-07-21 14:14:30
阅读次数：
177
Passage 22 Many of us invest valuable time, energy and money in planning our vacations. Vacations help us perform better at work, improve our sleep qu ...
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移动开发 时间：
2020-07-21 13:55:43
阅读次数：
84
#背景 今天在学习mysql时，看到一个案例，大体来说，就是客户端报Too many connections。但是，客户端的连接池，限制为了200，两个客户端java进程，那也才400，然后mysql配置了800的连接。 mysql是在my.cnf中配置了： [root@localhost CAD_ ...
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数据库 时间：
2020-07-18 15:24:03
阅读次数：
103
Pass a year learning in Hangzhou, yifenfei arrival hometown Ningbo at finally. Leave Ningbo one year, yifenfei have many people to meet. Especially a ...
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其他好文 时间：
2020-07-17 01:14:23
阅读次数：
90
Given an array, rotate the array to the right by k steps, where k is non-negative. Follow up: Try to come up as many solutions as you can, there are a ...
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其他好文 时间：
2020-07-16 00:20:51
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49
Jun 29, 2018 - 16 Comments Node JS is the popular Javascript runtime environment that is widely used by many developers, and npm is the accompany pack ...
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Web程序 时间：
2020-07-13 18:35:56
阅读次数：
84
##题面 Evolution is a long, long process with extreme complexity and involves many species. Dr. C. P. Lottery is currently investigating a simplified mo ...
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其他好文 时间：
2020-07-12 22:30:56
阅读次数：
68
蓝牙mesh基本概念 1.蓝牙MESH基本概念网状网(mesh) Mesh网络，就是一个多对多网络(Many to Many)。 每个设备节点都可以和别的节点自由通讯。在这种拓扑中，因为很多节点可以中继（relay）收到的消息(Message)， 所以端对端的通信可以比原来单点之间的通讯距离要远很多 ...
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其他好文 时间：
2020-07-12 20:43:58
阅读次数：
138
Given the array nums, for each nums[i] find out how many numbers in the array are smaller than it. That is, for each nums[i] you have to count the num ...
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其他好文 时间：
2020-07-11 09:17:31
阅读次数：
48
A string S of lowercase English letters is given. We want to partition this string into as many parts as possible so that each letter appears in at mo ...
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其他好文 时间：
2020-07-10 13:24:07
阅读次数：
65
